The structure simplification of the open boxcar, choosing elements type, and disposing the boundary and restriction of the model are introduced.

基于有限元分析方法，对运煤敞车的结构简化、单元选取、边界及约束处理等建模技术进行阐述。

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A new wireless echo algorithm is described based on table actuation, stratification and simplification structure.

概要叙述了一种基于表驱动的、分层结构的、简化的回波算法。

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This paper also discussed the practical simplification of complicated structure, the complex modeling method of different kinds of element, and contact analysis problems.

在课题研究中，还探讨了复杂结构的合理简化、多种单元混合建模以及接触分析等问题。

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