Tolerance Stack-Up Analysis and Process Capability Index Cpk

Previous articles have discussed the application of statistics in tolerance analysis: how statistical addition works, how to incorporate the influence of different distributions, and combining worst-case with statistical contributions. The resulting picture is that...

Rolling Contact Fatigue

Up to and including release 3.2.0 of HertzWin, all calculated results related to a static situation. The most important material stresses for a static situation are the maximum shear stress and the Von Mises equivalent stress. Most commonly used to determine whether a...
Tangential Force Acting on a Hertzian Contact in HertzWin

Tangential Force Acting on a Hertzian Contact in HertzWin

With the program HertzWin you can calculate Hertz point and line contacts. The influence of a tangential force can also be calculated. HertzWin has been available online for free since March 2009. No approximation but the exact solution In older releases of HertzWin...

Refined, Advanced Tolerance Analysis

In previous articles about tolerance analysis, I discussed the step-by-step plan and the way of adding up. Adding up tolerances can be a worst-case sum or a statistical sum. In ‘The distribution of tolerances’ I also discussed the types of distributions...