Question

Stiffness matrix represents a system of  ________

(a) Programming equations

(b) Iterative equations

(c) Linear equations

(d) Program CG SOLVING equations

I got this question by my college director while I was bunking the class.

My query is from One Dimensional Problems topic in division One Dimensional Problems of Finite Element Method

Answer 1

The correct option is (c) Linear equations

The explanation is: Stiffness is amount of force required to cause the unit displacement same concept is applied for stiffness matrix. The stiffness matrix represents a system of linear equations that must be solved in order to ascertain an approximate solution to differential equation.