多体摩擦型接触问题的边界元与有限元耦合法

Analysis of the Multi Body Contact Problem with Friction by the Coupling Method of BEM FEM

结合巨型泄洪引水闸门４００ｔ压力定轮轴瓦的应力计算与理论分析，提出了多体摩擦型接触问题的边界元与有限元的耦合解法，并将有限元的子结构法引入到多体摩擦型接触问题的边界元与有限元耦合计算中，提高了求解大型和复杂多体接触问题的功效。本方法也适用于非接触区情况比较复杂的其它多体接触问题。

This thesis is a part of research work of the scientific research items assigned by the state council-“stress calculation and theory analysis about the axle sleeve in gyro wheel of the huge lock gate”.In order to solve this problem,coupling of FEM and BEM with muti contact problems with friction is raised.Considering the large equations of huge engineering structures and the long compute time,the thesis first takes substructure method into the coupling of FEM and BEM with multi body contact problems with friction ,approaches it theoritically and practically.Several examples have been calculated and the results are satisfactory.