论文部分内容阅读
在Inventor中搭建平地机机架的简化几何模型,将其导入Patran中建立机架的有限元模型;在两种常用工况下,对机架的有限元模型进行强度分析,并对比油缸作用工况下的试验分析结果,验证机架有限元分析模型的正确性;机架的模态分析结果表明,机架与发动机存在共振的可能性。采用多目标优化技术,对机架进行多目标优化设计,结果表明,优化后的结构降低了机架与发动机共振的可能性以及机架质量,也符合机架的强度要求。
In Inventor, a simplified geometric model of a frame of a grader is built and imported into Patran to build a finite element model of the frame. The strength of the finite element model of the frame is analyzed under two common working conditions, The experimental results show that the rack finite element analysis model is correct. The results of modal analysis of the rack show that there is a possibility of resonance between the rack and the engine. The multi-objective optimization technology is used to optimize the design of the racks. The results show that the optimized racks reduce the possibility of resonance between the racks and the engine as well as the quality of the racks and the strength requirements of the racks.