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How to fix problem with custom coefficient of thermal expansion?

Question asked by Carl Eberly on Apr 27, 2014
Latest reply on Apr 30, 2014 by Jared Conway

  I am using Simulation to look at thermal stresses and resulting displacements.  The assembly that I am using for this exercise  consists of  solid metal cylinders axially aligned with a glass cylinder sandwiched between the metal cylinders.  I have successfully gotten good data when the middle cylinder is made of SolidWorks "Glass" (SolidWorks Materials / Other Non-metals / Glass).  However, when I tried to see the effect of using Zerodur (a low expansion ceramic) I had to enter the material properties as a custom material.  I was able to get a good thermal analysis, but the static analysis fails with the error message "Thermal coefficient (Alphx) is not defined for element 596".  Element 596 is probably the first element of Zerodur in the mesh.  A previous post concerning "thermal expansion coefficient bug" quoted solution S-059026 in the Knowledge Base.  Unfortunately as a student I don't have acess to the Knowledge Base.  Does anyone know the work arounds for this problem.

 

I have checked and double checked the custom material data, and the thermal stress analysis always works with "Glass".

 

I am using SolidWorks Student Edition 2012-2013 which has SolidWorks Premium and SolidWorks Simulation Premium.

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