Question

variational principle is the basis for finite difference method or finite volume method or displacement method or weighted residual method?​

Answer 1

Answer:

Weighted residual methods are directly applied to the governing PDE of the system whereas in weak formulation is developed by the integration of weighted integral statement such that the order of derivative of the depend function is reduced.

Variational Approach: It is also called ‘Energy Approach’ and it was popular in past but now rarely used. Variational approach of finding displacements (unknowns in structural mech) basically employs the concept of minimizing the total energy of the body in a variational sense w. r. t. the displacements.

PLEASE MARK ME THE BRAINLIEST ANSWER