Question

On summing up the strain energy and force terms over all the elements and modifying for the boundary conditions while minimizing the total potential energy. We get ______

(a) σ=D

(b) Kinematic energy

(c) ε=Dσ

(d) KQ=F

I got this question in unit test.

I'd like to ask this question from Finite Element Modelling topic in chapter Axis Symmetric Solids Subjected to Axis Symmetric Loading of Finite Element Method

Answer 1

The correct choice is (c) ε=Dσ

For explanation: KQ=F by this we can obtain unknown displacement vectors. A displacement is a vector whose length is the shortest distance from the initial to the final position of a point P. It quantifies both the distance and direction of an imaginary motion along a straight line from the initial position to the final position of the point.