基于径向函数的响应面法在薄板装配夹具设计中的应用  

Application of Response Surface Methodology Based on Radial Basis Function in Fixture Design

作　　者：邢彦锋[1,2] 金隼[2] 来新民[2] 陈关龙[2] 

机构地区：[1]上海工程技术大学汽车学院,上海201620 [2]上海交通大学机械与动力学院车身制造中心,上海200240

出　　处：《计算机辅助设计与图形学学报》2009年第1期101-106,共6页Journal of Computer-Aided Design & Computer Graphics

基　　金：国家"八六三"高技术研究发展计划(2006AA04Z148)

摘　　要：薄板产品装配夹具的定位策略优化可以有效地减少柔性零件定位的法向变形,而定位点优化方法直接影响到夹具的设计效率.针对直接采用有限元模型的定位点优化方法效率低的问题,提出面向夹具定位点优化的基于径向函数的响应面建模方法.该方法根据均匀采样对定位点位置参数域进行离散,并借助有限元分析构造样本集合;采用Multi-quadric函数描述夹具定位参数与零件变形间的非线性关系;应用均匀设计法优化径向基参量,从而建立基于径向函数的响应面模型.最后通过实例阐述了文中方法的建模过程,结果表明其具有良好的模拟效果和较高的预测精度.the normal The fixture locating schemes can direction, w efficiency problems hic of h directly affect the effectively reduce the deformation of compliant parts in fixture design efficiency. The paper, concerning with the locating-point-optimization method by using the finite element model, proposes a response surface method （RSM） based on the radial basis function （RBF） for optimizing fixture locating points. The method firstly discretizes the locating parameter domain based on the uniform sampling method and constructs sample sets by the finite element analysis; then, the relationship between fixture locating schemes and part deformation is established through the multiquadric function; afterwards, the RSM is established by applying the uniform design method to optimize the parameters of the RBF. Finally, two cases are used to illustrate the flowchart of RSM. Results show that the method has better performance and prediction ability.

关 键 词：夹具设计 响应面方法 径向基函数 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]