Stiffness Analysis using Finite Beam Element for Spot-Welded Beam Considering Shearing Deformation

Abstract

In this paper, the beam element for spot welded thin-walled box section beam considering shearing deformation is proposed. Additional warping produced by the bending torsion is analyzed considering local warping of the spot weld zone, and the effective shear modulus to be introduced into the beam element considering shearing deformation is calculated. By using the proposed element, it was shown that the effect of the shearing deformation of spot welded beams with closed and opened cross section could be expressed within acceptable engineering accuracy, and the twist angle distribution of the spot welded beam with the opening could be analyzed.