山地车车架结构灵敏度分析及优化设计  

Structure Sensitivity Analysis and Optimized Design of the Mountain Bike Frame

作　　者：陈敏[1,2] 张华伟[1,2] 吴智恒[1,2] 郑振兴[3] 

机构地区：[1]广东省工业技术研究院 [2]广州有色金属研究院,广东广州510651 [3]广东技术师范学院,广东广州510665

出　　处：《机械设计与制造》2013年第10期233-235,238,共4页Machinery Design & Manufacture

基　　金：广州市科技计划项目资助(12A144041579)

摘　　要：采用hypermesh软件建立山地车车架有限元模型,分析了车架在实验载荷工况下的等效应力和变形。使用hyperstudy和radioss计算了该模型在实验载荷工况下最大变形的灵敏度,并提出相对灵敏度绝对值较大的组件的弹性模量和厚度作为轻量化设计变量。在保证一定的强度、刚度条件下,按照高刚度、轻质量的要求对车架组件进行参数优化。根据优化后的参数,在radioss中对车架施加相同的载荷和约束,进行求解,优化后结果明显优于优化前方案。对于多参数结构优化问题,应用优化思路进行结构优化,能减小设计的盲目性和设计成本,加快新产品的设计开发。It establishes finite element model of the mountain bike frame in Hypermesh, and analyzes Von Mises stress and displacement of the frame in testing conditions. It calculates the sensitivity of the max displacement and puts forward the method of light weighting, which refers the components elastic modulus and thickness with the large relative sensitivity as design variables. Based on appropriate rigidity and strength, according to the demand of high stiffness, small mass, it accomplishes parameters optimizatior~ According to the optimized parameters, it applying the same load and constraints in the radioss, optimized result is better than the former. Using this methods for the structure optimization problem of multiple parameters, will reduce the blindness of design and the design cost, speed up the design and development of new products.

关 键 词：灵敏度分析 尺寸优化 

分 类 号：TH16[机械工程—机械制造及自动化]