【摘要】 本文应用广义变分原理，利用拉氏乘子法和罚函数法计入接触约束条件修正，建立了分析三维动力接触问题的一般有限元分析的理论模式；推导了处理这类问题的一种新的接触约束单元的接触刚度矩阵；采用增量求解模型解，研编了实施程序３ＤＤＣＦ；处理了方程中的病态问题、碰撞及能量释放条件问题。进行了算例考核，还首次给出了一个三维动力接触问题的算例结果。更多还原

【Abstract】 Based upon the generalized variational principle and using both methods Lagrange multiplier andpenalty function to deal with the various dynamic contact constrain conditions,authers present a newfinite element analysis mode for 3-D dynamic contact problem.The contact stiffness matrix is givensimultaneously.A computing methed of incremental loading is adopted and a FEM program-3DDCFis completed,where the problems all of the illness of equation are dealt with,the impact and the ener-gy release condition are taken into account too.The program is checked by a well known numericalexample and the results of a three dimensional dynamic analysis are shown finally.更多还原