News

Enhancements and modifications into version 2.02:

Flywheels

The program is intended for a design of a flywheel, its analysis, and determination of dimensions. It also allows to solve a crank mechanism and to determine parameters of asynchronous motors. The program solves:

• Design of a moment of inertia for a selected machine
• Design of flywheel dimensions based on a required moment of inertia
• Calculation of a moment of inertia based on dimensions of a flywheel
• Calculation of a moment of inertia of masses with different revolutions (reduced moment of inertia)
• Calculation of a stress in rotating rings
• Calculation of gyroscopic moment
• Calculation of a moment of inertia from a load diagram and a required run unevenness
• Calculation of coefficient of fluctuation of speed
• Design of a flywheel in connection with a motor
• Selection and calculation of parameters of approximately 1200 asynchronous electric motors
• Crank mechanism solution

The calculations use data, procedures, algorithms and information from literature, standards, and company catalogues.
(More...)

Calculation extensions, modifications and updates:

New versions of MITCalc are available for download here.

Enhancements and modifications into version 2.01:

Fluid mechanics

The program is designed to solve the most common problems in fluid mechanics. The program solves problems in the area of:

• Hydrostatics
• Stationary fluid discharge through hole
• Stationary discharge - overflows (ISO 1438, Swiss Engineers, Hansen, Bazin, Frese)
• Stationary flow of viscous fluid - constant pipe cross section with output nozzle / diffuser
• Stationary flow of fluid - various pipe cross sections
• Water hammer

Calculations include determination of Reynolds number, viscosity, laminar and turbulent flow losses for various materials, and dozens of types of loss coefficients

Calculation extensions, modifications and updates:

Indexation and calculation search, Design of the transmission ratio, Vehicle Aerodynamics, External Ballistics, Conversions of units, Viscosity calculation

New versions of MITCalc are available for download here.

Enhancements and modifications into version 1.76:

Friction brakes and clutches

The program is intended for the design, calculation and validation of four basic types of friction brakes and clutches. It also allows the user to determine the kinetic energy and loading moments of the mechanisms. The program performs following tasks:

• Calculation of brake loads
• Calculation of clutch starting load
• Validation of a loaded clutch
• Design and validation of:
• Disc brakes / clutches
• Cone brakes / clutches
• Drum brakes / clutches
• Band brakes / clutches
• Calculation and temperature validation of the designed brake / clutch

Calculation extensions, modifications and updates:

New Instructional Videos: here.

New versions of MITCalc are available for download here.

Enhancements and modifications into version 1.76:

Power Screw

The program (algorithm) is used to design and check power screws. It is used to solve the following tasks:

• Calculation of kinematic parameters (speed, torque, revolutions and power output...)
• Simple selection / definition of power screw (metric, square, trapezoidal...)
• Screw check for tensile/pressure, thrust, bend, buckling and critical revolutions.
• The program contains a table of materials, threads and friction coefficients.
• Support of 2D CAD systems.

Ball Screws

The program (algorithm) is used to design, calculate and check ball screws. It is used to solve the following tasks:

• Preliminary design (minimum input parameters – sufficient to navigate and select from catalogs)
• Detailed analysis (load, dimensions, parameter check)
• Load spectrum table definition (speed, torque, revolutions and power output...)
• Calculation of an equivalent load
• Service life calculation, tolerances, temperature analysis
• Tensile/Pressure, thrust, bend, buckling and critical revolutions
• Lubrication proposal and efficiency calculation
• The program contains tables of screws according to ISO and ANSI
• Support of 2D CAD systems

Thermal Properties of Materials

The workbook contains information defining the effect of temperature on some physical and mechanical properties of materials used in the engineering industry. It solves the following tasks:

• Calculation of the linear coefficient of thermal expansion and elongation of the component for the given heating process.
• Elongation of a group of components made of various materials arranged into a linear chain.
• Calculation of the modulus of elasticity for the given temperature.
• The database contains approximately 700 metallic materials used in mechanical engineering.

Calculation extensions, modifications and updates:

Rolling Bearings – the possibility to calculate and compare the service life of an equivalent bearing supplied by another manufacturer has been added

Bolted Connection, Spring Calculations – refinement of the empirical model used in determining the physical properties of materials based on temperature

Welded Connections – redesign of calculation controls with the intention to improve workbook compatibility with different versions of MS Excel

Pinned Couplings – for some types of connection, the maximum permissible number of pins in the connection has been increased

Update of support of all 2D/3D CAD system (AutoCAD, Autodesk Inventor, SolidWorks, Solid Edge)

New Instructional Videos: here

New versions of MITCalc are available for download here.

Bevel and Hypoid Gears according ISO 23509

• Extension of calculation functions.
• Generation of standard 2D drawings.
• Precision 3D model of the bevel gearing (Straight, Oblique, Spiral, Zerol).
• Precision 3D model of the hypoid gearing (Gleason, Oerlikon, Klingelnberg).
• Generation of precision 3D models for manufacturing or printing for any 3D CAD system.

Spur Gearing, Helical Gearing (External)

• Generation of precision 3D models for manufacturing or printing for any 3D CAD system.

Helical conical compression springs

• Improvement of calculations for springs with end coils.

Roller Bearings I - SKF

• Updated SKF bearing database.

System

• Save a copy of the calculation for different versions of Excel (compatibility solution).
• Update of support of all 2D/3D CAD system (AutoCAD, Inventor, SolidWorks, Solid Edge).
• New instructional videos: here

Enhancements, updates and modifications:

Bevel and Hypoid Gears according ISO 23509

The calculation is designed for geometric designs of bevel and hypoid gear with straight, oblique and curved teeth according the ISO23590. The programme gives solutions to the following tasks:

• Preliminary design of the gear size.
• Detail geometrical design for gear: Straight, Oblique, Spiral, Zerol, Hypoid (Gleason, Oerlikon, Klingelnberg)
• Automatic design of a transmission with the minimum number of input requirements

Calculation extensions, modifications, and updates

• Vehicle Aerodynamics - calculation of acceleration
• External Ballistics - calculation extensions, printout of ballistic tables
• Roller Chains - exact wheel shape in 2D
• Roller Bearings III - FAG: Updated FAG bearing database
• Instructional Videos: here
• Update of support of all 2D/3D CAD system (AutoCAD, Inventor, SolidWorks, SolidEdge)

Bolted Connection

• About 190 new bolt materials have been added according to ASTM, ISO, EN (Bolts made of stainless steel, Bolts made of non-ferrous metals, Bolts made at high or low temperatures).
• Expanded database of the materials of the jointed parts.
• An option for design and testing of hollow bolts was added.
• More modern methods are used in the calculation of rigidity.
• Higher precision calculation of additional bending stress for shouldered bolts.
• A more modern, less conservative procedure is applied to the strength testing of a joint.
• The strength test of a dynamically loaded joint was expanded with testing of the bolt in the weakened shank.
• Expansion and refinement of the theoretical model for determination of the bolt fatigue limit.
• Added option for design and testing of the joint with respect to the chosen assembly method.
• Modified and refined calculation of joint parameters for a specific working temperature.
• An option for continuous monitoring of the force ratios in the joint during its heating and cooling was added.

Vehicle Aerodynamics

The module is intended for simple simulation of vehicle motion. The program solves the following tasks:

• Simple definition of vehicle parameters.
• Selection from a list of typical vehicles.
• Calculation of forces.
• Calculation of the load, energy, consumption and travel distance.
• Graphic representation of the results.

External Ballistics

The program is intended for simple simulation of the firing of various types of bullets. The program solves the following tasks:

• Definition of the bullet.
• Selection from the list of typical bullets.
• Calculation and selection of typical ballistic coefficients.
• Calculation of the forces, velocities, trajectories, angles and other external ballistic parameters.
• Graphic representation of the results of one or two bullets.

Corrections and adjustments

• Outer / inner gearing: correction of the generation of the 3D wheel model.
• Chains: adjustment of the chain database.
• Update of support of all 2D/3D CAD system (AutoCAD, Inventor, SolidWorks, SolidEdge).

Gear Rack Design

The calculation is designed for geometric and strength design and check of gear rack with straight and helical toothing. The application provides:

• Calculation of helical and straight toothing.
• Automatic design of a transmission with the minimum number of input requirements.
• Design for entered coefficients of safety (static, dynamic).
• Calculation of complete geometric parameters (including corrected toothing).
• Optimization of toothing by use of proper correction (balancing specific slips, minimizing specific slips, strength...).
• Calculation of strength parameters, safety check.
• Support of 2D and 3D CAD systems. Drawings of an accurate tooth shape including data (X,Y coordinates).

Calculation of Involute Gearing Geometry

The calculation solves the geometric design of any involute gearing.

• Support of 2D and 3D CAD systems. Drawings of an accurate tooth shape including data (X,Y coordinates).

Spur Gear External, Internal, Planetary, Gear Rack

• Complete implementation of standards
• ISO 6336-1:2006; ISO 6336-2:2006; ISO 6336-3:2006; ISO 6336-5:2006
• ISO 1265; ISO 1328-1:1997; ISO 1328-2:1997; ISO 1122-1:1998
• ANSI/AGMA 2001-D04 , AGMA 908-B89, ANSI/AGMA 2015- 1-A01, ANSI/AGMA 2015-2-A06
• Extended by a whole range of tools that make designing, dimension checking, tolerance proposals and defining of the new materials simpler.
• Added a theoretical part of the Help.

Other extensions, modifications, and updates

• Roller bearings I - SKF: Updated SKF bearing database
• Conversion of units: Added calculations and conversions of the oil viscosity values
• Transmittion support calculations: Multiple reduction gearing (n max. 9)
• Pins and clevis pins couplings: More precise calculation of the bending stress at the clevis pin based on the pin mounting in the clevis and the rod.
• Straight beams: New profiles HEA, HEB
• Added support of the 2D CAD systems: BricsCAD, ZWCAD, ProgeCAD
• Update of support of all 2D/3D CAD system (AutoCAD, Inventor, SolidWorks, SolidEdge)
• MITCalc is translated by an automatic translator for another 15 languages. (ES, FI, HU, IT, JP, KO, NL, NO, PL, PT, RU, SK, SL, SV, TR).

Modifications into version 1.70a

• Signature of VBA sections with a new certificate valid until 2016 (Importance - high)
• Shells: correction of the picture switching in Office 2007 (Importance - medium)
• Gearing: correction of units name in material table (Importance - low)
• Coupling of shafts using a key, grooving: (Importance - medium)
  • Update of involute splines DIN 5480 (new modules 0.75 a 1.75)
  • Table extension for keys ANSI B17.1, new keys BS 46 and ISO 2491

Engineering calculations MITCalc - modifications into version 1.70

• Integration of Extension Pack EP08 (Shells - Deformation and stress of rotational shells and pressure vessels)
• Support of AutoCAD 2013 and AutoCAD 2014
• Support of BricsCAD
• Support of Autodesk Inventor 2014
• Full support for MS Excel 2013 (64/32 bit versions)
• Full support for Windows 8 and 8.1 (64/32 bit versions)

MITCalc was extended with a new calculation module.

Deformation and stress of rotational shells (pressure vessels)

The calculation concerns solutions of pressure vessels and their components. The calculation solves deformations and curves of stress in rotational shells loaded with axial force, pressure, radial force and a bending moment. This program is intended for homogeneous shells of identical thickness and a single material. The calculation also enables solutions for connecting two shells of different parameters (thickness, material, dimensions...).

The program enables:

• Calculation of cylindrical, conical and spherical thin-wall shells
• Calculation of a cylindrical and spherical thick-wall shells
• Calculation of a round plate
• Selection of various loading methods (joint, force, moment, rotational, load with fluid...)
• Calculation of deformation, radial shift, moment and stress in any point
• Visualisation of charts with curves of the calculated values

If you have installed the complete MITCalc (full version or a yearly subscription), the new calculation module will be added by installation of an extending package EP08.

Modifications into version 1.61

• Signature of VBA sections with a new certificate valid until 2014 (Importance - high)
• Planetary gear, correction of the size through the ring gear W (Importance - medium)
• Spur gearing internal/external toothing, bevel gearing, planetary gear, correction of the virtual number of teeth zn (Importance - low)
• Bolt joint, correction of coefficient for additional stress due to bending δ (Importance - medium)

Correction of problems connected with correct initialization of the calculations' input table data when using certain combo boxes in MS Office 2010 for:

• Pins and clevis pins couplings: setup of the correct list of allowed diameters and lengths of pins when changing the type of pins [1.10] (Importance - low)
• Force couplings of shafts with hubs: setup of initial material characteristics if the calculation units are changed [1.1] (Importance - low)
• Compression, tension and torsion springs: setup of a correct list of allowed wire diameters if the material norm of the wire is changed (Importance - low)
• Compression, tension and torsion springs: problem with displaying the results table [3.20] of the spring's design calculation (Importance - medium)

Modifications into version 1.60

• Full support for MS Excel 2010 (64/32 bit versions)
• Excel 2007 / Excel 2010 calculations saved in binary form (.xlsb)
• Support for all current versions of supported CAD systems
• Resolved compatibility between different versions of Excel, see here for details.

Furthermore, the below described problems have been solved:

• Correction of the accuracy of calculations of the last value for girders (Importance - low).
• Correction of the nonfunctional change of the model for SolidWorks 2011, correction of the window being moved up. (Importance - high)
• Correction of the labelling of units for calculation of spur gearing, inch version (Importance - low)
• Improvement of precision of the recommended minimal diameter of the shaft in the calculations of shaft connections for hollow shafts (Importance - low)
• Correction of the calculation of screwed joints for limit zero values of the "Factor of implementing the operational force n" (Importance - medium)

Engineering calculations MITCalc - modifications into version 1.51:

• Integration of Extension Pack EP07 (Plates)
• Integration of Service Pack SP06
• Extended installation options with administrator rights (it is possible to install in the account with administrator rights and start up in all accounts with user rights)
• An example of transmission calculations is available in help (gearing, shafts, bearings, belts, chains...)
• Added support for AutoCAD versions 2010 and 2011

Furthermore, the below described problems have been solved:

• Calculation of forces and bending moment for spur gear (external, internal, planetary). Everything is newly calculated on an operating pitch diameter. Refinement is related to Ft, Fr and Mo in paragraph [12.0] (Importance - low)
• Refinement of Conversion of Units (Importance - medium)
• Refinement of image switching in the calculation of plates and in the module of technical formulas in Office 2007/SP1. (Importance - medium)
• Refinement of Calculation of Plates - the calculation of rectangular plate, paragraph [4], cases 2 and 9 – wrong recalculation of force. (Importance - high)
• Refinement of the calculation of width between centres (planet/crown wheel) for non-zero backlash in planetary gearing. (Importance - high)
• Refinement of the interface for SolidEdge ST2. (Importance - high)
• Beams, extended range of input cells (dimensions, load...), added IPE Profile. (Importance - low)
• V-Belts (SI version): corrected pulley slot angle (SPZ, SPA, SPB, SPC) for selected diameters. (Importance - low)
• Internal gearing ANSI, refinement of the conditioned formatting for bending safety coefficient. (Importance - low)

Engineering calculations MITCalc were extended with a new calculation module and a service pack:

Plates (circular, annular circular, rectangular) - EP07

This calculation deals with the deflection, stress and variation of forces in the loaded flat plates. The calculation is designed for plates that are flat, homogeneous, with the same thickness and made from one material. The plates may be circular, annular circular and rectangular. The plates may be loaded evenly (unevenly) on the whole surface (or its part) or they may be loaded by the force distributed on the circle. The calculation includes many graphs of all the figures calculated and provides for handling the minimum plate thickness and the maximum plate loading. More...

Service Pack - SP06

Service Pack SP06 solves issues described below:

Spur gear internal - Imperial version - Deals with the inaccurate calculation of the geometric coefficient I (contact), refines the calculation of geometric coefficient J (bending) (Importance - Medium)

Spur gear external - Imperial version - Refines the calculation of geometric coefficient J (bending) (Importance - Medium)

Spur gear external, internal, planetary - ISO version - Refines the calculation of geometric coefficient YFS (bending) (Importance - Low).

The MITCalc engineering calculations were extended by:

Planet Gear

The calculation is intended for the geometric and stress design and inspection of the planetary gearing with straight and helical teeth. The revolution speeds for the individual members are easy to design, including for gear sets with two degrees of freedom (differentials). Gears can be designed for chosen safety factors. In addition, the design calculation makes it possible to use many optimization methods, such as the selection of appropriate corrections to offset relative sliding minimize relative sliding, required strength, etc. Besides a number of additional calculations (such as designing of accurate width between centers, calculation of inspection dimensions, etc.), tools for the plotting of the exact tooth shape are available. This makes it possible to use all the data in gear manufacturing and creation of an accurate 3D model. (More...)

Welded Connections

The calculation is intended for the geometric design and stress inspection of welded joints of carbon steel machinery structures under static loads. The program makes it possible to design over 50 of the most common forms of welded joints, exposed to various combinations of loads. Joints consisting of butt welds, fillet welds, plug welds, slot welds and spot (resistance) welds can be designed and inspected. The program offers approximately 700 carbon steels suitable for welding under a number of material standards, and dimension tables for a number of steel profiles under multiple standards. (More...)

Other modifications, corrections and extensions of MITCalc calculations

• Translations: Complete translation into French; extended Chinese translation of help.
• CAD: Support for AutoCAD 2009, support for current versions of 3D CAD systems.
• Spur gearing (internal, external): Calculation of maximum output for chosen dimensions, offset of relative sliding, minimization of relative sliding, detailed stress calculation, more accurate safety calculation, faster calculations.
• Worm gear: Fixed calculation of Mk1, Mk2.
• Roller chains: Finding of a valid solution for a given chain type; fixed switching between chain types.
• Cone belts: Fixed fill of diameter selection buttons.
• Shafts: Fixed graph for Office 2007 (freezing calculations).

MITCalc engineering calculations were extended by:

• New Worm Gearing calculation (DIN, AGMA)
• Integration of the Extension Pack EP06 (bearings III - FAG)
• Chinese language (traditional, simplified)
• Other modifications, corrections and enhancements

Worm Gear calculation

The calculation is used for geometrical and strength designs and worm gearing check. Gearing can be designed for selected safety coefficients including optimization e.g. for weight, efficiency, centre-line distance, etc. Worm gearing thermal analysis is added to the calculation of geometry and safety coefficients (wear, seizure, deflection, fatigue break). The calculation is in accordance with DIN 3996, DIN 3975-1, DIN 3975-2 and ANSI/AGMA 6022-C93 and /AGMA 6034-B92. Outputs to 2D and 3D CAD systems are supported. (More info...)

Bearings I - SKF

• The recommended value of maximum permissible axial load was removed for tapered roller and ball thrust bearings (only applies to bearings mounted with an adapter)
• Ball thrust bearings – the wrong value of radial coefficient "X" was corrected
• Correction of some pictures in roller and needle bearings
• Correction of 3D drawing in some tapered roller bearings
• Correction of 2D and 3D drawing in some spherical-roller thrust bearings

Bearings II - INCH

• Correction of the calculation of a pair of ball bearings with oblique contact for "MRC Bearing Group" bearings with contact angle 15°
• Specification of the calculation of life factor a23 precisely to "DIN ISO 281 Bbl 1:2003-04"

Other modifications, corrections and enhancements of MITCalc calculations

• Calculation compatibility with MSOffice 2007 (user interface modifications)
• Added AutoCAD 2008 support

The MITCalc engineering calculations have been enhanced by a new calculation module:

Roller bearings III (INA/FAG)

The module is designed for the design, selection and control of rolling bearings. In addition to the calculation of basic parameters (life, static safety, etc.) the program enables a solution of a modified life according to ISO and calculates loading of pairs of tapered roller bearings (bearings with oblique contacts). The module includes a database of more than 5000 bearings (INA/FAG). More info...

Engineering calculations MITCalc were extended with new modules:

• New calculation of Fifteen Types of Springs
• New calculation of Internal Toothing
• Extended calculation of External Spur Toothing

Calculation of Springs (15 different types).

The calculation is designed for geometric and strength design of metal springs of different types and finishes, stressed by statical, possibly cyclical load. The program enables automatic design (search) of a spring with appropriate dimensions and static or dynamic strength check. The program can be used for designing spiral, disc, helical, torsion and leaf springs, of different shapes and diameters of wire. (More...)

Calculation of Internal / External Toothing.

The calculations are designed for geometric and strength design and check of external and internal spur toothing with rectilinear and helical teeth. Toothing can be designed for selected safety coefficients and strength calculation has been further refined. Newly the calculations provide use of a range of optimization methods, like choice of proper correction to balance specific slips, minimize specific slips, required strength, etc. Besides a whole range of other calculations (e.g. designing accurate axial distance, calculation of check dimensions, calculation of temperature rise, etc.), the tools for drawing an accurate shape of tooth are available, which provides use of these data directly for production of toothing and creation of an accurate 3D model. (More...)

Other modifications, corrections and extension of MITCalc calculations

• CAD: Support of AutoCAD 2007, Correction of connection to AutoCAD 14
• SKF bearings: Correction of drawing for some axial roller bearings
• Pins: New types of ANSI pins added
• Pressure springs: Correction of wrong assignment of the value of spring constant in DXF table
• Tension springs: Correction of translation
• ANSI toothing: Correction of calculation of safety coefficient (SP05)
• Shafts: Modification of calculation of critical revolutions

The new version contains:

• Integration of the Extension Pack 04 (Roller bearings II - Inch)
• Integration of the Extension Pack 05 (Pinned Couplings)
• New version of all spring calculations (support of Hot formed springs d>20mm)
• Fixed problem in bearing calculations (approximation of coefficient X and Y)
• New version of the MITCalc Integrated environment
• Update of the signature certificate

MITCalc for Solid Edge

It is a standalone installation. In addition to “MITCalc” calculations, it includes the appropriate parametric models and an interface between Excel and the Solid Edge CAD system (ver. 15, 16, 17). In addition to individual parts, the link of MITCalc for Solid Edge and the Solid Edge CAD system makes it possible to also input groups of parts (subassembly) into assembly. For example, it is possible to input a complete belt gear solution at once; it is fully associative and the dimensions of the inserted part (subassembly) change according to the changes in calculation parameters.

Pinned Couplings (Extension Pack EP05)

The calculation is intended for the geometric design and strength check of couplings using pins and clevis pins. The program is used to solve the following tasks: design of pin for spring attachment, design of couplings with securing pins, design of cross pin in rod and sleeve, design of radial pin for shaft-hub connection, design of longitudinal pin for shaft-hub connection, design of clevis pin for rotating rod-clevis connection, strength check of designed couplings. The program includes dimensional tables for pins and clevis pins according to ANSI, ISO, DIN, BS, JIS and CSN and support of 2D CAD systems.

Roller bearings II (Inch)

The module is designed for the design, selection and control of rolling bearings. In addition to the calculation of basic parameters (life, static safety, etc.) the program enables a solution of a modified life according to ISO and calculates loading of pairs of tapered roller bearings (bearings with oblique contacts). The module includes a database of more than 5000 bearings (RBC Bearings, Nice Ball Bearing, General Bearing Company, New Hampshire Ball Bearing, NMB USA Inc., MRC Bearing Group, Fafnir Bearings Company, Torrington Company, Timken Company, Barden Precision Bearing, McGill Manufacturing Co. Inc., NTN Bearing Corporation, INA USA Corporation). More info...

Language packages

External translation packages are available for French, Italian, Portuguese and spanish. The translation packages translate all program messages, including the “Expert Comments” system.

The new version of MITCalc engineering calculations has been extended by new calculation modules:

Bevel Gear (straight, oblique and curved teeth)

Solutions of geometric and strength parameters of conical gearing with straight, oblique and curved teeth. Based on power requirements and operational and production parameters, you can carry out the design of an optimised solution in minutes. The calculation is given in imperial and SI units, according to the standards DIN, ISO, ANSI and AGMA (More info...).

Rolling Bearings I (SKF)

The module is designed for the design, selection and control of rolling bearings. In addition to the calculation of basic parameters (life, static safety, etc.) the program enables a solution of a modified life according to ISO and calculates loading of pairs of tapered roller bearings (bearings with oblique contacts). The module includes a database of more than 10,000 SKF bearings (More info...).

Both new modules enable outputs to all supported 2D and 3D CAD systems.

Other extensions relating to a major part of the existing calculations

• Recording of tables – The selected calculations enable entering of results into the selected 2D CAD system in the form of a table.
• Description of parts, BOM – Most calculations enable entering of a shortened three-row description (name, dimension, standard) into the 2D CAD system. This description can also be used as data for a BOM for the selected 3D CAD system.
• Support of external language files (preparation for translations into other languages).
• Minor changes and bug fixes.

Change to structure of the delivered calculations and packages:

Within the simplification of the installation, the calculations are now available in the form of an installation file that also includes a connection to the selected 3D CAD system (e.g. “MITCalc for SolidWorks“).

Tolerance Analysis

Two programs are available for the analysis of linear, 2D and 3D dimensional chains, which in addition to the basic analysis (Worst case, Root Sum Squares, Monte Carlo...) also include a solution to some special matters, like analysis of a dimensional chain deformed as a result of temperature change and design of tolerances for a selective assembly. (More info...)

Technical Formulas

The workbook contains solutions to many dozens of basic formulas from physics, technology and mechanical engineering (Characteristics of solids, rectilinear and rotation motion, thermal expansion, friction…). Help, pictures as well as many selection tables with values of various coefficients and material properties are available for the formulas. (More info...)

New version of MITCalc contains:

• Integration of the Extension Pack 01 (Tolerances)
• Integration of the Extension Pack 02 (Buckling, Force Couplings of Shafts with Hubs)
• Integration of the Service Pack 04
• Support for AutoCAD 2005
• Fixed problems in Excel 97
• Fixed instability problems with links between workbooks

Service Pack SP04 includes fixes from SP01, SP02, SP03 and solves issues described below.

Shafts connection using a key, grooving

• Incorrect setting of some cells for printing. (Importance – Low)
• For selected shaft diameter is firmly assigned the key dimension. This patch allow to select any key dimension (Importance – Middle)
• Incorrect assignment of the key dimension if the shaft diameter is maximum for certain key dimension range. Example: DIN 6885, shaft diameter 75mm. Is selected the key 22x14 instead 20x12. (Importance – Middle)

Bolted connection

• Incorrect setting of some cells for printing. (Importance – Low)