| 考虑振动特性的钢铝复合车架多学科优化 |
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| 引用本文： | 宋燕利,徐勤超,徐峰祥,阮仕礼,苏建军,王琏浩.考虑振动特性的钢铝复合车架多学科优化[J].中国机械工程,2019,30(7):846. |
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| 作者姓名： | 宋燕利 徐勤超 徐峰祥 阮仕礼 苏建军 王琏浩 |
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| 作者单位： | 1.武汉理工大学现代汽车零部件技术湖北省重点实验室，武汉,430070
2.武汉理工大学汽车零部件技术湖北省协同创新中心，武汉,430070
3.湖北齐星汽车车身股份有限公司，随州,44130 |
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| 基金项目： | 高等学校学科创新引智计划资助项目(B17034)；
国家自然科学基金资助项目（51675392，51605353）；
湖北省技术创新专项重大项目（2016AAA053） |
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| 摘 要： | 以国内某款纯电动轻卡车架为研究对象，利用正交试验法开展零件材料对车架性能的显著性分析，确定高强铝合金板材替换方案，以获得钢铝复合车架。针对钢铝复合车架与驾驶室发生共振等问题，采用考虑静态刚度和动态频率的多学科优化模型，进一步对钢铝复合车架进行多厚度匹配设计优化。结果表明，轻量化车架在保证性能的前提下，第4阶频率提高1.5 Hz，避开了危险频率范围；车架总质量减小13.5 kg，减重幅度为7.2%。
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| 关 键 词： | 钢铝复合车架 多学科优化 轻量化 振动特性 |
Multidisciplinary Optimization for Steel-Aluminum Composite Frames Considering Vibration Characteristics |
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| SONG Yanli,XU Qinchao,XU Fengxiang,RUAN Shili,SU Jianjun,WANG Lianhao.Multidisciplinary Optimization for Steel-Aluminum Composite Frames Considering Vibration Characteristics[J].China Mechanical Engineering,2019,30(7):846. |
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| Authors: | SONG Yanli XU Qinchao XU Fengxiang RUAN Shili SU Jianjun WANG Lianhao |
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| Affiliation: | 1.Hubei Key Laboratory of Advanced Technology for Automotive Components,Wuhan University of Technology，Wuhan，430070
2.Hubei Collaborative Innovation Center for Automotive Components Technology,Wuhan University of Technology，Wuhan，430070
3.Hubei Qixing Automobile Body Co.，Ltd.,Suizhou，Hubei,44130 |
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| Abstract: | A pure electric light truck frame was taken as the research object, an orthogonal test method was used to carry out the significant analysis of the part materials to the frame performances and the replacement scheme of high strength aluminum alloy sheets was determined, and thus the steel-aluminum composite frames were obtained. In order to preclude the resonance of steel-aluminum composite frames and cabs, a multidisciplinary optimization model was adopted to optimize the multi thickness matching for the steel-aluminum composite frames considering both the static stiffness and the dynamic frequency. It is shown that in the premise of performance guarantees, the lightweight frame's fourth-order frequency is increased by 1.5 Hz, avoiding the dangerous frequency. The frame weight was reduced by 13.5 kg, accounting for 7.2% of the original pure steel frames. |
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| Keywords: | steel-aluminum composite frame multidisciplinary optimization lightweight vibration characteristics |
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