Elastoplastic FE analysis on the combined bending and torsion of square cross-section bar

摘要

3D elastoplastic FE analysis is carried out for solving the problems in the case of combined bending and torsion of square section bars. Using the ABAQUS program, the combined effects of bending moments and torsion moments, and spring back processes under various loading paths are examined. The analysis is treated as a large deformation problem, and the material is considered to be a perfectly rigid elastoplastic material. As a result, it is confirmed that despite the loading paths, spring back curvatures and spring back torsion angles coincide with the numerical results obtained from theories of pure bending and pure torsion.