Question

In penalty approach evaluate _______ at each support.

(a) Load vector

(b) Degrees of freedom

(c) Force vector

(d) Reaction force

I had been asked this question by my college director while I was bunking the class.

My question is based upon Finite Element Equations topic in portion One Dimensional Problems of Finite Element Method

Answer 1

Correct choice is (d) Reaction force

Easiest explanation: By penalty approach we can derive boundary conditions of an element or a structure. The first step of this approach is to add a large number to the diagonal elements. Second step is to extract element displacement vector. Third step is to evaluate reaction force at each point.