基于变密度法深孔钻床主轴箱可靠性拓扑优化  

Reliability Topology Optimization on Spindle Box of Deep Hole Drilling Machine Based on Variable Density Method

作　　者：胡韶岩 薄瑞峰[1] 刘韶轩 陈振亚[1] HU Shaoyan;BO Ruifeng;LIU Shaoxuan;CHEN Zhenya(School of Mechanical Engineering,North University of China,Taiyuan Shanxi 030051,China)

机构地区：[1]中北大学机械工程学院,山西太原030051

出　　处：《机床与液压》2024年第3期113-117,共5页Machine Tool & Hydraulics

基　　金：国家自然科学基金项目(52005456);山西省自然科学基金面上项目(201901D111128);中央引导地方发展专项项目(YDZJSX2022A032);军方项目(JZ20211202CZYPGCL-B)。

摘　　要：以TBT-ML500深孔钻床主轴箱为研究对象,考虑随机因素的影响,通过基于变密度法的可靠性拓扑优化设计方法,进行了考虑可靠性和稳定性要求的结构轻量化设计。在传统拓扑优化的基础上增加概率约束,建立了应力和位移约束下的可靠性拓扑优化模型;以可靠性指标为约束条件,使用一阶可靠性法和Roenblatt逆变换将可靠性拓扑优化问题解耦为可靠性分析和确定性拓扑优化,最后进行变密度拓扑优化。算例分析结果表明:此方法在实现轻量化的同时更好地满足了实际应用中的安全要求,同时为深孔钻床其他基础件的可靠性拓扑优化提供了参考。Focusing on spindle box of TBT-ML500 deep-hole drilling machine,considering the influence of stochastic factors,the structural lightweight design considering the reliability and stability requirements was performed by using the reliability topology optimization design method based on the variable density method.The probability constraint was added to the traditional topology optimization model under the stress and displacement constraints;the reliability topology optimization problem was decoupled into the reliability analysis and deterministic topology optimization by the first-order reliability method and the Roenblatt inverse transformation.Finally,the variable density topology optimization was performed.The example analysis results show that this method better meets the safety requirements in the practical application while realizing the lightweight,and also provides a reference for the reliability topology optimization of other basic parts of the deep hole drill bed.

关 键 词：深孔钻床 变密度法 一阶可靠性法 拓扑优化 

分 类 号：TH122[机械工程—机械设计及理论]