One of the key technique problems is boundary dynamic contact constraint and contact judgment in FEA simulation for 3d complicated massive forming.
边界界面动态接触约束与接触判断是3维复杂体积成形有限元数值模拟的关键技术问题之一。
Computer Simulation is an advanced technique in the fields of design and test, and also an important way to test and evaluate the effectiveness of dynamic and intricate system.
计算机仿真是现代设计与试验领域不可或缺的先进技术，同时也是动态、复杂系统设计与评估的重要手段。
By utilizing modal synthesis technique and theory of elastic mechanics, the formation mechanism and simulation method of vehicle body dynamic stress caused by road unevenness are studied.
运用模态综合技术和弹性力学理论，研究了由路面不平度引起的车身动应力的形成机理及其仿真计算方法。
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