I did the heat transfer analysis (thermal steady state) in Mecway 8 (element tri3), then transfer temperatures from solution.
By using the temperatures, then I continued the analysis to static analysis (static analysis), having thermal expansion and stress thermal loading. When I run, it said tri3 is not supported in this analysis, then I changed the elements to tri6 (by using mesh tool - change shape). The result in Mecway 8 is as expected, the structure is expanding due to the temperature loading.
However, when I opened in Mecway 9, it seems not correct. I run in Mecway 7 also ok.
Is this a bug in Mecway 9 or the behavior in element is changed?
Comments
This model will give incorrect results in all versions because the midside nodes without temperatures default to the reference temperature - ie no thermal stress. To correct it, use the same tri6 elements in the thermal model as the static model.
I rerun the heat transfer after changing to tri6 elements (from tri3), then creating a static model with thermal stress. Yes, it works and showing the same displacement contour as shown in previous one. Perhaps this converts to a better and more accurate result as you have explained.