敏度算法的二次珠优化改善油底盘的频率特性  

Improvement of Frequency Characteristics of Oil Pans by Using Twice Shell Bead Optimizations with Sensitive Algorithm

作　　者：付远[1] 张友亮[1] 刘小红[2] 程香平[1] 郭炜[1] 王德[1] FU Yuan;ZHANG You-liang;LIU Xiao-hong;CHENG Xiang-ping;GUO Wei;WANG De(Applied Physics Institute, Jiangxi Academy of Sciences, Nanchang 330028, China;Mechanical and Electrical Engineering College, Nanchang University, Nanchang 330031, China)

机构地区：[1]江西省科学院应用物理研究所,南昌330028 [2]南昌大学机电工程学院,南昌330028

出　　处：《噪声与振动控制》2017年第3期66-71,共6页Noise and Vibration Control

基　　金：江西省科学院青年基金重点资助项目(2017-YZD2-10);江西省科学院科研开发专项基金博士资助项目(2014-YYB-17);国家自然科学青年基金资助项目(51505203)

摘　　要：采用敏度算法壳体珠优化对汽车油盘进行动力学再设计。因为高阶模态阻尼的指数式增大,会削弱高阶频率的共振,所以考虑前12阶本征频率对油盘的动力学特性的影响。二次优化的设计目标分别为前12阶频率最大化和600 Hz的带隙优化,分别通过两次模态优化迭代,成功地将油盘前12阶频率提升至高于启动频率0~200 Hz以上,同时也将这些本征频率成功地驱离稳定工况下的600 Hz范围。最后将优化后的结果,采用有限元模态分析验证,并将相应的优化模型采用数控加工成型的方式制备出来,从而实现了设计、优化和制造的一体化过程。The dynamic redesign of oil pans in automobiles is carried out by using shell bead optimization with sensitivity algorithm.Since the damping of high order modals increases exponentially which will reduce the resonance influence of the oil pans on the whole structures,only the natural frequencies of the first12orders are taken to be accounted for the optimization.The objective functions of the twice optimization are to maximize the natural frequencies of the first12orders and to optimize the600Hz band gap.Through the twice modal optimization iteration,the frequencies of the first12orders are raised to above the starting frequencies of0-200Hz.Meanwhile,these natural frequencies are far from the frequency600Hz of the stable working condition of the automobiles.And the unification of the design,optimization and manufacture is realized.

关 键 词：振动与波 珠优化 油底盘 频率优化 带隙优化 模态 

分 类 号：X593[环境科学与工程—环境工程]