In this paper, is presented the technique of calculating the nodalvalues of the distributed contact forces on the contact surface from the nodal lumped contact forces.
本文建立了由节点集中接触力计算接触面上分布接触力节点值的方法，从而可顺利建立接触判据。
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As a result, the element tangent stiffness matrix is symmetric and is updated by using the total values of the nodal variables in an incremental solution procedure.