基于正交试验响应面模型的激光切割机横梁结构优化设计  

Optimum Design of Laser Cutting Machine Beam Structure based on Orthogonal Test Response Surface Model

作　　者：费继友 金葛亮 李花 王枫 FEI Jiyou;JIN Geliang;LI Hua;WANG Feng(School of Locomotive and Rolling Stock Engineering,Dalian Jiaotong University,Dalian 116028,China)

机构地区：[1]大连交通大学机车车辆工程学院

出　　处：《大连交通大学学报》2019年第6期49-53,共5页Journal of Dalian Jiaotong University

基　　金：国家自然科学基金资助项目(51376028)

摘　　要：将激光切割机横梁组件作为研究对象,以提高横梁组件刚度、横梁组件稳定性为优化目标,且适量降低横梁组件总质量或者保持不变.利用二阶响应面模型分别拟合出正交试验数据中横梁组件各壁厚参数与3个相关性能指标的函数关系,并建立相应的优化模型.通过对优化设计模型进行求解,最终得到筛选后的最优解.通过最优解对各壁厚参数进行修改后仿真显示激光发射孔处静态变形量下降了8.12%、横梁组件一阶固有频率提高了7.73%,提高了横梁刚度、避开了横梁的共振区间,横梁组件总质量基本保持不变.To improve the rigidityand the stability of the laser cutter beam component withreduced or constanttotal mass of the beam component,the second-order response surface model is used to fit the functional relationship between the wall thickness parameters of the beam components and the three related performance indicators in the orthogonal experiment data.The corresponding optimization model is established,and the optimal solution after screening is finally obtainedby solving the optimized design model.The simulation results show that the static deformation of the laser emission hole is reduced by 8.12%,and the first-order natural frequency of the beam component is increased by 7.73%,which improves the beam stiffness and avoids the resonance interval of the beam.The total mass of the beam assembly remains essentially the same.

关 键 词：激光切割机 横梁 响应面 优化设计 

分 类 号：I20[文学—中国文学]