基于子模型的某A型铝合金地铁车体轻量化  

Lightweight of A Type Aluminum Alloy Subway Body based on Submodel

作　　者：史亚威 李晓峰[1] SHI Ya-wei;LI Xiao-feng(Academy of Locomotive and Vehicle Engineering,Dalian Jiaotong University,Dalian 116028,Liaoning,China)

机构地区：[1]大连交通大学机车车辆工程学院,辽宁大连116028

出　　处：《机械研究与应用》2024年第6期108-111,116,共5页Mechanical Research & Application

摘　　要：为提升车体轻量化的效率和准确性,该文将子模型技术和响应面代理模型融合,以某A型铝合金地铁头车车体为研究对象,根据EN-12663标准对整车有限元模型进行静强度分析,确定应力危险部位。首先通过位移插值技术构建车体子模型,并对子模型进行精度检验;然后运用APDL语言建立参数化的子模型,结合中心复合设计建立车体厚度参数与质量的响应面代理模型,并利用MOGA算法对代理模型求解。结果表明:优化后,车体结构在满足强度要求的基础上质量降低21 kg。To improve the efficiency and accuracy of vehicle body lightweighting,the sub-model technology and response surface surrogate model is integrated.Taking the body of an A-type aluminum alloy metro car as the research object,the static strength analysis of the finite element model of the whole vehicle was carried out according to the EN-12663 standard to determine the part with the maximum stress.The displacement interpolation technique was used to construct the sub-model of the car body,and its accuracy was checked.The APDL language was used to establish the parameterized sub-model,and the response surface surrogate model of the thickness parameters and quality of the car body was established by combining the central composite design,and the MOGA algorithm was used to solve the surrogate model.The results show that the optimized body structure not only meets the strength requirements,but also reduces the weight by 21 kg.

关 键 词：铝合金地铁车体 子模型 响应面代理模型 

分 类 号：TU512.4[建筑科学—建筑技术科学]