Question

In Finite Element Analysis, which option is correct for computation of load due to specified boundary stress?

(a) Can be computed using a local coordinate system and one-dimensional interpolation functions

(b) Can be computed using a local coordinate system but not one-dimensional interpolation functions

(c) Cannot be computed using a local coordinate system but one-dimensional interpolation functions can be used

(d) Neither a local coordinate system nor one-dimensional interpolation functions can be used

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Asked question is from Plane Elasticity in division Plane Elasticity of Finite Element Method

Answer 1

Right answer is (a) Can be computed using a local coordinate system and one-dimensional interpolation functions

Best explanation: In general, the loads due to specified boundary stresses can be computed using an appropriate local coordinate system and one-dimensional interpolation functions. When higher-order elements are involved, the corresponding order of one-dimensional interpolation functions must be used.