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In the FEM element library, what is the other name of a higher-order element?

(a) Complex element

(b) Simplex element

(c) Linear element

(d) Nonlinear element

I had been asked this question during an online exam.

This interesting question is from Library of Elements and Interpolation Functions topic in division Interpolation Functions, Numerical Integration and Modelling Considerations of Finite Element Method

1 Answer

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Best answer
Correct answer is (a) Complex element

For explanation: Simplex and linear elements contain nodes only at endpoints but not at the interior. They have linear polynomials as interpolation functions. Higher-order elements can be created easily from simplex elements by adding additional intermediate nodes to each element. They are also called complex elements.

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