I have defined a local coordinate system in ANSYS Design Simulation 8.0
and it seems to give the correct stress output, but the strains appear to
be wrong. Is this a known error?
Yes. Defect 21931 was filed and then fixed in ANSYS Simulation 8.1. It is an ANSYS Workbench Class 3 Error. The final version of the error report is not yet available, but the draft contents are shown below. The final Class 3 Error number is also not yet available. Record Number: 21931 Type of Record: Class3 Error Report Description: Strains are transformed incorrectly into local coordinate systems. Strains are assembled into tensor form incorrectly while performing the transformations from the global system into local systems as follows. From the strain components Ex, Ey, Ez, Exy, Eyz, Ezx, the following incorrect assembled strain tensor is used for the transformations, producing incorrect results: Ex Exy Ezx Exy Ey Eyz Ezx Eyz Ez The correct assembled strain tensor that should be used is: Ex 0.5*Exy 0.5*Ezx 0.5*Exy Ey 0.5*Eyz 0.5*Ezx 0.5*Eyz Ez . |
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