复合材料磨床床身的动态特性分析与优化  

Dynamic Characteristics Analysis and Structure Optimization of the Composite Material Grinder Bed

作　　者：卢东辉[1] 范元勋[1] 

机构地区：[1]南京理工大学机械工程学院,南京210000

出　　处：《组合机床与自动化加工技术》2017年第2期50-53,共4页Modular Machine Tool & Automatic Manufacturing Technique

基　　金："高档数控机床与基础制造装备"科技重大专项(2012ZX04010032)

摘　　要：为了检验复合材料磨床床身的动态特性是否符合要求。用ANSYS对树脂矿物复合材料床身与铸铁材料床身进行模态分析和谐响应分析,得到其前六阶固有频率、振型及谐响应结果。对比两种材料床身的分析结果发现,复合材料床身的动态特性更好。在模态分析的基础上对复合材料床身进行拓扑优化分析,针对其拓扑优化密度云图提出了强化方案,并将强化后结构的分析结果与原结构分析结果进行了对比。对比发现,优化后床身的第一阶固有频率相比原床身提高了5.6%。This article is aimed to examine the dynamic characteristics of the composite bed. The modal analysis and harmonic response analysis of mineral composite resin bed and cast iron bed were carried out by using ANSYS. Their first six natural frequencies,mode shapes and harmonic response results were obtained.It could be found that the composite material bed had better dynamic characteristics when comparing the results of the two bed's analysis. On the basis of the modal analysis of composite bed,the topology optimization was carried out. According to the topological optimization density cloud,the intensive program was put forward. Then the modal results of original bed and optimization bed were compared. Compared to the original bed,the natural frequency of the optimized bed had increased 5. 6%.

关 键 词：床身 复合材料 模态分析 谐响应分析 拓扑优化 

分 类 号：TH113[机械工程—机械设计及理论] TG659[金属学及工艺—金属切削加工及机床]