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stress occurred in SHELL & Solid Plate of Same Config

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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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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. 



M.karthickraja likes this

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