基于直角坐标系3D打印机的装配机械结构优化设计探讨

Discussion on Optimal Design of Assembly Machinery Structure Based on Cartesian Coordinate System 3D Printer

由于已有方法未能通过改进粒子群算法进行装配机械结构优化,导致机械结构强度下降,优化耗时上升。提出一种基于直角坐标系3D打印机的装配机械结构优化方法,对装配机械结构进行有限元分析,同时划分为多个单元杆件,对各个杆件进行分析获取单元刚度矩阵,将矩阵叠加得到整体刚度矩阵。进而根据直角坐标系3D打印的相关理论,分别从尺寸优化、形状优化以及拓扑优化三个方面构建对应的优化设计模型。仿真实验结果表明,所提方法能够有效降低装配机械结构优化耗时,提升机械结构强度。

Due to the failure of the existing methods to optimize the assembly machinery structure through the improved particle swarm optimization algorithm,the mechanical structure strength are reduced,and the optimization time is increased.An optimization method of assembly machinery structure based on Cartesian coordinate system 3D printer is proposed.The assembly machinery structure is analyzed by finite element method,and divided into several element members.The element stiffness matrix is obtained by analyzing each member,and the whole stiffness matrix is obtained by superposition of the matrix.Then,according to the relevant theory of 3D printing in rectangular coordinate system,the corresponding optimization design models are constructed from three aspects of size optimization,shape optimization and topology optimization.Simulation results show that the proposed method can effectively reduce the time-consuming of assembly machinery structure optimization,and improve mechanical structure strength.