ABSTRACT
ABSTRACT: A 3-D contact element model for trapeziform key hydraulic grooves is used to simulate contact transverse joints. The contact physical equation of trapeziform key hydraulic grooves is derived; and the reasonable gradient angle is predicted. On the basis of the characteristic of the contact nonlinearity, this paper presents three contact modes that judge contact states of contact elements. Then the paper gives stress computation formula of contact element, and push over the relation between the stress and relative deformation. Finally, a typical example is analyzed. The result shows that the contact element model is able to simulate open-close state of contact and stress state of contact.
