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This page has been translated for your convenience with an automatic translation service. This is not an official translation and may contain errors and inaccurate translations. Autodesk does not warrant, either expressly or implied, the accuracy, reliability or completeness of the information translated by the machine translation service and will not be liable for damages or losses caused by the trust placed in the translation service.Translate
What it is depends on the details of your model/analysis. But for a model using linear isotropic materials for example, the effective strain is the von mises strain. The equation for von mises strain can be found in the Autodesk Reference Manual under STRAIN (pg 157 remark 4)
You posted this question in the IdeaStation which is a place to submit ideas to guide the future direction of the product, a better place to ask general questions is the General Discussion forum located here: http://forums.autodesk.com/t5/nastran-in-cad-general/bd-p/75
