tolstack
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aevyrie
1D tolerance analysis for mechanical engineers
Compute RSS, worst case, and nominal any time a value is changed.
If any tolerance has a non-normal distribution, highlight the RSS results, and warn that they are only valid for normal distributions.
Allow non-normal distributions, such as flat, or skewed. Skewed distributions could be defined by mean/median/std dev.
Allow users to specify the USL and LSL for the assembly. Report amount of predicted assemblies outside these limits.
Show the % contribution of each tolerance to the overall tolerance stack.
Especially useful for non-normal distributions. Show how the distribution falls relative to the bounds.
Develop validation test to pass input and compare against known correct output. Also need to document this validation. Good reference: https://www.smlease.com/entries/tolerance/tolerance-stackup-analysis/