基于响应面法的数控磨床立柱热特性有限元模型修正  

FEM modifying for pillar of CNC grinding machine thermal characteristics based on RSM

作　　者：魏颃[1] 李郝林[1] 应杏娟[1] 

机构地区：[1]上海理工大学,上海200092

出　　处：《现代制造工程》2014年第9期65-68,共4页Modern Manufacturing Engineering

摘　　要：提出基于数控磨床立柱热变形检测与有限元模型分析相结合的一种有限元模型修正方法。将数控磨床立柱热特性位移误差与热载荷参数之间的隐形关系用显示函数近似表达出来,代替原有的有限元模型。在此基础上对有限元模型进行优化,提高有限元模型准确度。对数控磨床立柱有限元模型修正的结果表明,基于响应面模型的数控磨床立柱热特性有限元模型修正方法可以快速有效地修正模型,且修正结果精度高。Based on pillar of CNC grinding machine thermal deformation test combined with finite element model analysis. A finite element model modifying method is proposed. Which could express the hidden relationship between deformation error and thermal boundary condition parameters by an explicit function. Through the explicit function and optimization of the parameters, the accuracy of finite element model will be increased. The FEM updating result of pillar of CNC grinding machine showed that the approximate model method could make FEM modifying effectively and rapidly, with acceptable accuracy.

关 键 词：有限元模型 响应面法 优化 中心组合设计 

分 类 号：TG502.15[金属学及工艺—金属切削加工及机床]