Finite Element Analysis and Topography Optimization of Motorcycle Cushion Plate
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摘要: 建立摩托车座垫底板的有限元模型,对其进行静力学分析和模态分析。同时考虑到底板的静态多工况刚度问题和动态频率特性问题,采用线性加权方法将多目标问题转化为单目标问题,实现对底板结构多工况下的多目标形貌优化设计。优化后的底板获得了最优的加强筋布局,最大变形量减少52.2%,最大应力减少42.2%,一阶固有频率增加9.0%,静动态性能均得到显著的改善,达到了预期的优化效果。Abstract: A finite element model of motorcycle cushion plate was built, and the static analysis and modal analysis were conducted. Considering the multiple conditions of static stiffness and the dynamic frequency characteristics of the plate, the multi-objective problem was converted to a single-objective problem by using linear weighted method, and the multi-objective topography optimization design of the plate subjected to multiple conditions is achieved. The optimized plate has the optimal layout with stiffeners, with a 52.2% reduction in maximum deformation, a 42.2% reduction in maximum stress and a 9.0% increase in the first natural frequency. Both the static and dynamic performances of the plate are significantly improved and the expected effect of optimization is achieved.
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Key words:
- cushion plate /
- deformation /
- design /
- finite element method /
- mathematical models
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[1] 史春涛,孙立星,刘建军,等.摩托车座垫结构设计浅析[J].摩托车技术,2006,19(1):18-21 Shi C T, Sun L X, Liu J J, et al. A brief of analysis of seat cushion structure design of motorcycle[J]. Motorcycle Technology,2006,19(1):18-21 (in Chinese) [2] 王铁,赵震,陈峙,等.某车架结构基于灵敏度分析的优化设计[J].机械科学与技术,2013,32,(4):545-550 Wang T, Zhao Z, Chen Z, et al. Optimization of the dump truck frame structure based on the sensitivity analysis[J]. Mechanical Science and Technology for Aerospace Engineering,2013,32,(4):545-550 (in Chinese) [3] 张宇,李映辉,张仲鹏.轿车白车身零部件形貌优化研究[J].机械设计与制造,2011,(10):105-106 Zhang Y, Li Y H, Zhang Z P. Study on topography optimization for past of a car body in white[J]. Machinery Design & Manufacture,2011,(10):105-106 (in Chinese) [4] 贾维新,郝志勇,杨金才.基于形貌优化的低噪声油底壳设计研究[J].浙江大学学报,2007,41,(5):770-773 Jia W X, Hao Z Y, Yang J C. Low noise design of oil pan based on topography optimization[J]. Journal of Zhejiang University,2007,41,(5):770-773 (in Chinese) [5] 龙江启,李毅,俞平,等.基于结构优化的客车骨架轻量化设计研究[J].机械科学与技术,2013,32,(4):558-563 Long J Q, Li Y, Yu P, et al. Study on the lightweight design of coach skeleton based on the structural optimization method[J]. Mechanical Science and Technology for Aerospace Engineering,2013,32,(4):558-563 (in Chinese) [6] Yang Y P, Kuo C C. Passive and active design of hard disk suspension assemblies using multiobjective optimization techniques[J]. Computer Methods in Applied Mechanics and Engineering,1997,145(1):147-166 [7] 李永欣,薛开,戴光昊,等.基于特征灵敏度技术的船用齿轮箱抗振优化设计[J].机械设计,2011,28,(2):69-72 Li Y X, Xue K, Dai G H, et al. Vibration resistance and optimization design of marine gearbox based on the eigenvalue sensitivity[J]. Journal of Machine Design,2011,28,(2):69-72 (in Chinese) [8] Seungjae M, Shinji N, Noboru K. Unified topology design of static and vibrating structures using multiobjective optimization[J]. Computers & Structures,2000,75:93-116 [9] Chen T Y, Wu S C. Multiobjective optimal topology design of structures[J]. Computational Mechanics,1998,21:483-492 [10] 张胜兰,郑冬黎,郝琪,等.基于HyperWorks的结构优化设计技术[M].北京:机械工业出版社,2007 Zhang S L, Zheng D L, Hao Q, et al. The technology of structure optimization design based on HyperWorks[M]. Beijing: Mechanical Industry Press,2007 (in Chinese) [11] 何岚,刘放,李贤坤,等.长定子中低速磁浮轨道动力学数值分析及结构优化设计[J].机械科学与技术,2013,32,(6):781-784 He L, Liu F, Li X K , et al. Dynamics analysis and structure optimization design of long stator low-speed maglev track[J]. Mechanical Science and Technology for Aerospace Engineering,2013,32,(6):781-784 (in Chinese) [12] 刘为,薛克敏,李萍,等.汽车驱动桥壳的有限元分析和优化[J].汽车工程,2012,34,(6):523-527 Liu W, Xue K M, Li Ping, et al. FE analysis and optimization of vehicle drive axle housing[J]. Automotive Engineering,2012,34,(6):523-527 (in Chinese) [13] 王加锋,王树林,朱岩.旋叶式压缩机转子的有限元模态分析[J].机械设计,2009,26,(1):68-70 Wang J F, Wang S L, Zhu Y. Finite element modality analysis on rotor of rotary vane compressor[J]. Journal of Machine Design,2009,26,(1):68-70 (in Chinese)
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