冷镦机床身热力分析与结构优化  

Thermo-mechanical analysis and structure optimization for cold heading machine bed

作　　者：何彬[1] 李响[2] 

机构地区：[1]湖北理工学院机电工程学院,湖北黄石435003 [2]三峡大学机械与材料学院,湖北宜昌443002

出　　处：《锻压技术》2014年第9期92-96,共5页Forging & Stamping Technology

基　　金：国家自然科学基金资助项目(51305232);湖北省自然科学基金资助项目(2012FFC016)

摘　　要：冷镦机床身的轻量化是锻压机床绿色设计和制造的必然趋势。针对冷镦机床身热固耦合的结构特点,分析了床身工作时温度场、热应力和热力耦合特性;考虑到热力耦合作用下冷镦机床身结构优化过程的复杂性,提出了通过床身热分析、拓扑优化与再设计环节的有效集成来解决热力耦合作用下冷镦机床身结构优化的建模和计算过程的简化方法,建立了冷镦机床身结构优化的一般流程;并以某型号冷镦机床身为例,基于Abaqus 6.11有限元分析软件,实现了床身的热分析、拓扑优化、再设计以及方案选优的整体结构优化过程;优化结果显示该型号冷镦机床身在体积减少了9.52%的同时其综合热力学性能也得到了较大程度的改善,从而验证了所提出方法和过程的有效性。It is an inevitable trend on the green design and manufacturing of forging machine tool to fight the weight of heading machine bed. According to the structure characteristic of the thermo-solid coupling of cold heading machine bed, the features of temperature field, thermal stress and thermo-mechanical coupling in operation were analyzed. Considering the complexity of structure optimization process of the bed under thermo-mechanical coupling, a simplified method of modeling and calculating the process of structure optimization under thermo-mechanical coupling was put forward through the integration of thermal analysis, topology optimization and redesign for cold head- ing machine bed, and a general procedure of structure optimization was constructed accordingly. For a certain type of cold heading ma- chine bed as an example, the processes of overall structure optimization including thermal analysis, topology optimization, redesign and optimal scheme selection were realized by finite element software Abaqus 6. 11. The optimal result shows that the thermodynamic property of the bed is improved remarkably while its weight is reduced by 9. 52% , which testifies the effectiveness of the proposed method and process.

关 键 词：冷镦机 床身结构 热力耦合 拓扑优化 

分 类 号：TG315[金属学及工艺—金属压力加工]