Engineering Toolkit
Spreadsheet Tolerance analysis
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Do you want to try FlexBeam first or do you not need the more extensive functionality of FlexBeam Pro? Then download the free version FlexBeam Lite.
Calculate Hertz Contacts
With HertzWin you can quickly calculate point and line contacts. The practical, free program automatically performs all Hertzian contact calculations.
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With the free FlexHinge program, you can quickly calculate the stiffness and material stress of a flexure hinge. It performs all calculations automatically.
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Recent Posts
Advanced Method of Tolerance Analysis
In previous articles about tolerance analysis, I discussed the step-by-step plan and the way of adding up. The latter can be a worst-case sum or a statistical sum. In 'The distribution of tolerances' I also discussed the types of distributions that may exist: a normal...
Background Information of the HertzWin Calculator for Hertzian Stresses
Occasionally, contact stresses play a role in a mechanical design. Herzian stress equations are needed to calculate indentation and to check if the yield stress isn't exceeded. Because programming is a hobby of mine, it seemed like a good idea to make a Hertzian...
Toolkit: Help function sometimes not visible and blurry fonts in Windows 10
Fix the issue with non-visible contents of the help function and fix the issue with blurry fonts under Windows 10.
The Distribution of Tolerances
In a previous article the statistical tolerance stack-up analysis is discussed. It is usually profitable to do a statistical tolerance stack-up analysis instead of a worst-case analysis. A worst-case analysis often leads to low tolerance specifications and therefore...
Statistical Tolerance Stack-up Analysis
In the article Worst-case Tolerance Stack-up Analysis you read about the worst-case or linear stack-up analysis. In such an analysis it is assumed that all dimensions in the tolerance chain have worst-case deviations form their nominal value. In a statistical analysis...
Worst-case Tolerance Stack-up Analysis
Suppose that you went through your tolerance analysis step plan and made a tolerance chain. The only thing to do now is to add up all tolerances. This seems easy enough but there are a few questions to consider: What to do with asymmetrical tolerances? Do you perform...
