Question

b) List the four material properties needed to perform a FE analysis using a bilinear material. c) Describe the boundary conditions needed to impose a symmetry plane when using shell elements.

Answer 1

Ans(b) : FE analysis stands for finite element analysis and is being used to do the analysis of any element for the stress-strain curve. It is also useful for the characterization of the heterogenous materials. The material properties required to perform the given analysis using bilinear material are being listed below :

Young's Modulus
Yield strength
Bulk and Shear Modulus
Poisson's ratio
Ans(c) : The boundary conditions which are needed to impose a symmetry plane when using shell elements are known as the symmetry and anti-symmetry boundary conditions. There are separate rules for both the conditions. For the symmetry condition of displacement using the shell elements, that the displacement vector component perpendicular to the plane is zero and the rotational vector components parallel to the plane of the shell are zero. The conditions for the anti symmetric is exactly opposite to the symmetric and hence can be same as contrasting boundary conditions of the symmetric planes.
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