Finite elements in the analysis of open thin-walled bars subjected to torsion

Abstract

The work presents the possibility of studying the problem of open thin-walled bars subjected to torsion by using the finite element method. It is well known that in this case the bar cross-section warps and the state of loading is restrained torsion. For this reason, the force-displacement relation of the finite element is derived by using third degree shape functions and fifth degree shape functions. Generally, the higher order of shape functions yield to more accurate results