Treatment of Contact Stiffness of Joint in FEM Analysis (2nd report)

Abstract

We proposed the method how to introduce the contact stiffness of the joint interface into the FEM analysis. In this research, we propose the more advanced method in which the contact stiffness is obtained by differentiating the contact force with respect to the approach distance of contact surfaces. From the analytical result using this method, we conclude as follows. The proposed method can be appropriate, since the analytical result agree well with the experimental results and the behavior of the joints obtained from the analysis explains well the behavior of the bending displacement of the cantilever in experiment.