新型采煤液压支架受力有限元分析及优化

Finite Element Analysis on Hydraulic Supports' Force of New Type Coal Winning Machines and Its Optimization

新型采煤液压支架结构较传统的液压支架复杂,参照传统支架的设计原则设计固体新型采煤液压支架,采用Pro/E三维制图软件建立支架的整体模型,通过IGS中间文件将支架的三维实体模型导入ANSYS软件,再运用ANSYS有限元分析软件进行应力分析,对支架某些部件出现局部应力集中的部位进行强度等级处理,并对影响支架的主要结构进行优化分析。实践表明,优化后的顶梁最大应力降低,质量减少了5.81%,应力集中区域明显减小,达到了较好的优化效果。

As more complicated than traditional hydraulic supports, the hydraulic support of new type coal winning machines was de- signed referring to the design principle the traditional one. The integrated model of the support was built using Pro/E software. Then, the model was introduced to ANSYS software through IGS middle files. The stress distribution of the model was analyzed by ANSYS finite element analysis software. The local stress concentration in some sites of components was also classified by the strength grade and the main structures were optimized. Practices show that, The maximum stress of the optimized support is decreased;the areas with stress concentration and the 5.81% of the total weight are reduced,and achieves good optimal effects.