Question

In elimination approach, which elements are eliminated from a matrix ____

(a) Force

(b) Load

(c) Rows and columns

(d) Undefined

I got this question in final exam.

This is a very interesting question from Finite Element Equations topic in division One Dimensional Problems of Finite Element Method

Answer 1

Correct answer is (c) Rows and columns

For explanation I would say: By elimination approach method we can construct a global stiffness matrix by load and force acting on the structure or an element. Then reduced stiffness matrix can be obtained by eliminating no of rows and columns of a global stiffness matrix of an element.