MODIFIED DYNAMIC CONTACT FORCE METHOD UNDER RECIPROCATING LOAD

This paper presents a modified reciprocating contact force method for solving earthquake engineering problems. The proposed method employs the criteria of the relative velocity between master and slave nodes, together with a central difference time-integration scheme. This method is a powerful tool to conduct a structural dynamic analysis with the possible transitions of four contact statuses, i.e., separation, stick contact, sliding contact and reverse sliding contact. Numerical examples illustrate the efficiency of the proposed method.