by Jaap Vink | 6 Dec 2020 | Blog, Hertzian Contact

With the program HertzWin you can calculate Hertz point and line contacts. The influence of a tangential force can also be calculated. HertzWin is available online for free since March 2009. No approximation but the exact solution In older releases of HertzWin (before...
by Jaap Vink | 21 Apr 2020 | Blog, Tolerance Analysis

In previous articles about tolerance analysis, I discussed the step-by-step plan and how to add up tolerances. The sum of tolerances can be a worst-case sum or a statistical sum. In ‘The Distribution of Tolerances’ I also discussed the types of...
by Jaap Vink | 28 Jan 2019 | Blog

Occasionally, contact stresses play a role in a mechanical design. Hertzian stress equations are needed to calculate indentation and to check that the yield stress isn’t exceeded. Since programming is a hobby of mine, it seemed like a good idea to make a...
by Jaap Vink | 3 May 2017 | Blog

Occasionally I’m asked why the content of the Help function of one of the software applications in the Toolkit is not visible. It just says “Navigation to the webpage was canceled”. Another problem is that on high resolution (high DPI) displays under...
by Jaap Vink | 28 Mar 2015 | Blog, Tolerance Analysis

A previous article discussed statistical tolerance stack-up analysis. It is usually more profitable to perform a statistical tolerance stack-up analysis instead of a worst-case analysis. A worst-case analysis often leads to low tolerance specifications and therefore...
by Jaap Vink | 16 Dec 2013 | Blog, Tolerance Analysis

In the Worst-case Tolerance Stack-up Analysis article, you will read about worst-case or linear stack-up analysis. Such an analysis assumes that all dimensions in the tolerance chain have worst-case deviations from their nominal values. A statistical tolerance...