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What is the correct statement regarding the shape function S of a linear triangular element?

What is the correct statement regarding the shape function S of a linear triangular element? Correct Answer The first derivatives of S and hence, all the strains are element-wise constant

A linear triangular element (number of nodes=3) has two degrees of freedom, ux and uy per node and a total of six nodal displacements per element. Since the shape functions are linear, their first derivatives are element-wise constant, and hence, all the strains computed for the linear triangular element are element-wise constant.

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