拓扑优化法设计柔顺恒力机构

发布时间：2017-12-31 16:31

本文关键词：拓扑优化法设计柔顺恒力机构　出处：《西安电子科技大学》2012年硕士论文　论文类型：学位论文

【摘要】：结构优化的目的是让结构利用材料更经济、受力分布更合理。而拓扑优化是结构优化研究中最顶尖的方面，结构拓扑的改进可以大大改善结构的性能或减轻结构重量，带来直接的经济效益，，近年来成为国内外研究热点。目前拓扑优化因其算法的特殊性和复杂性，其描述、模型和理论还处于探索阶段，而使用在柔顺机构的设计研究上更少。柔性机构是一种依靠构件自身弹性变形来输出全部或部分运动、力和能量的装置。目前主要使用伪刚体模型分析和设计柔顺机构。本文尝试使用拓扑优化方法来设计柔顺机构，并采用一种自己摸索出的新的算法。在柔顺机构中存在大变形，所以这种新算法要使用非线性有限元数值方法。本文用这种拓扑优化的新算法设计了柔顺钳和柔顺恒力机构。研究结果表明,应用这种新算法对柔顺机构进行拓扑优化设计能够得到合理拓扑图。
[Abstract]:The purpose of structural optimization is to make structural use of materials more economical and force distribution more reasonable. Topology optimization is the most important aspect of structural optimization research. The improvement of the structure topology can greatly improve the performance of the structure or reduce the weight of the structure and bring direct economic benefits. In recent years, topology optimization has become a hot topic at home and abroad. At present, the topology optimization is due to the particularity and complexity of its algorithm. Its description, model and theory are still in the exploratory stage, and are less used in the design of compliant mechanism. Flexible mechanism is a kind of elastic deformation of the member itself to output all or part of the motion. At present, the pseudo-rigid body model is mainly used to analyze and design the compliant mechanism. This paper attempts to use the topology optimization method to design the compliant mechanism. A new algorithm developed by ourselves is adopted. There is a large deformation in the compliant mechanism. Therefore, the nonlinear finite element numerical method is used in this new algorithm. In this paper, the compliant pliers and compliant constant force mechanisms are designed by using the new algorithm of topological optimization. The results show that the new algorithm can be used to optimize the topology of compliant mechanism.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH112

【引证文献】