a) Triangle
b) Quadratic triangle
c) Interpolation
d) Shape function
Answer: b
Explanation: The six-node triangle. By referring to the master element where ϛ=1-ξ-η. Because of terms ξ2,η2 etc. in the shape functions, this element is also called a quadratic triangle. The isoparametric representation is
u=Nq.
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