stress occurred in SHELL & Solid Plate of Same Config
Hi all,
I had modeled a steel Plates of two Cases of Same config as shown in fig.
Case :1 2D PLATE 2mm Thickness, F=140N(10N/14 Nodes), constraints at opposite end.
Case :2 3D hex Plate 2mm Thickness with 2 Layer of Mesh, F=140N(10N/14 Nodes), constraints at opposite end.
Clarification required :
1. Both plates are same in Boundary conditions , dimensions and material property. only the element type varies but why the stress induced is different ?
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M.karthickraja -
If you look at corner stress data instead of centroidal stress data, you will likely find the results are much closer.
- Robert
Hi,
In dynamic analysis when the geometry is borderline between the classification of 2-D and 3-D geometry, 2-D shell elements are preferred over 3-D. This is because shell elements being less stiffer captures the mode shapes accurately and with a fewer number of nodes and elements.
Also, in FEA the result depends on element type and mesh refinement of the model. Thus you are getting variation in stress values.