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It is an inevitable trend on the green design and manufacturing of forging machine tool to light 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 heading machine bed, and a general procedure of structure optimization was constructed accordingly. For a certain type of cold heading machine 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.
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［1］张祖芳, 仲太生, 许超. 开式压力机床身轻量化设计研究[J]. 锻压装备与制造技术, 2003, 38(3)：26- 28.Zhang Z F, Zhong T S, Xu C. Lightening design research of openback press frame[J]. China Metalforming Equipment & Manufacturing Technology, 2003,38(3)：26-28.
［2］徐高春. 面向环保的高速全自动冷墩机优化研究与系统实现[D]. 上海：上海大学，2011.Xu G C. Optimication Research and System Implementation for High Speed Automatic Cold Heading Machine to Environment Protection[D]. Shanghai: Shanghai University, 2011.
［3］He Bin. Multi-constraint topology optimization of forging machine bed for light weight design [J]. International Journal of Advancements in Computing Technology, 2013, 9 (5):94-103.
［4］李冬梅，张宪民，王念峰，等. 基于可靠性约束的热固耦合结构拓扑优化[J]. 华南理工大学学报:自然科学版，2011，39(6)：42-47.Li D M, Zhang X M, Wang N F, et al. Topology optimization of thermo-mechanical coupling structures based on reliability constraint[J]. Journal of South China University of Technology:Natural Science Edition, 2011, 39(6): 42-47.
［5］左孔天，钱勤，赵雨东，等. 热固耦合结构的拓扑优化设计研究[J]. 固体力学学报，2005，26(4)：447-452.Zuo K T, Qian Q, Zhao Y D, et al. Research on the topology optimization about thermo-structural coupling field[J]. Chinese Journal of Solid Mechanics, 2005, 26(4): 447-452.
［6］李开标. 热、力耦合作用下轻结构的多目标拓扑优化方法[D].哈尔滨：哈尔滨工业大学，2006.Li K B. A Multi-objective Topology Optimization Method for Light .Structure Under Coupled Thermal-mechanical Loads[D]. Haerbin: Harbin Institute of Technology, 2006.
［7］刘江林，曾卫东，吴欢，等. ＴＡ２棒材斜轧穿孔过程三维热力耦合有限元分析[J]. 锻压技术，2012，37(3)：59-62.Liu J L, Zeng W D, Wu H, et al. 3D thermo-mechanical coupling finite element analysis of piercing process for TA2 bar billet[J]. Forging & Stamping Technology, 2012, 37(3): 59-62.
［8］Hansen G, Bendsoe M P, Sigmund O. Topology optimization of heat conduction problems using the finite volume method[J] . Structural and Multidisciplinary Optimization, 2006, 31 (4): 251-259.
［9］He Bin. Research on the method of topology optimization under thermo-mechanical coupling for forging machine bed[J]. International Journal of Digital Content Technology and its Applications, 2013, 7(10):18-26.
［10］Ramya Menon C, Vinod Pangracious. Thermal analysis & optimization of a 3 dimensional heterogeneous structure[J]. International Journal of Computer Science & Engineering, 2012, 2(1):7-15.
［11］陶鑫. 铸造凝固过程温度场与应力场有限元数值模拟[D]. 昆明：昆明理工大学，2009.Tao X. Numerical Modeling on the temperature Field and Heat Stress Field in the Process of Foundry Freezing[D]. Kunming: Kunming University of Science & Technology, 2009.
［12］潘涛，杨志刚，白秉哲，等. 钢中夹杂物与奥氏体基体热膨胀系数差异导致的热应力和应变能研究[J]. 金属学报，2003，39(10)：1037-1042.Pan T, Yang Z G, Bai B Z, et al. Study of thermal stress and strain energy inγ-fe matrix around inclusion caused by thermal coefficient difference[J]. Acta Metallurgica Sinica,2003，39(10)：1037-1042.
［13］Rocha Lao, Lorente S Bejan A. Constructal design for cooling a disc-shaped area by conduction[J]. International Journal of Heat and MsaaTransfer, 2002, 45(8):1643-1652.
［14］杨军刚，张卫红，王丹，等. 热力耦合结构的弹性支撑分析与拓扑优化设计[J]. 力学学报，2012，44(3)：537-545.Yang J G, Zhang W H, Wang D, et al. Analysis and topology optimization of elastic supports for structures under thermo-mechanical loads[J].Chinese Journal of Theoretical and Applied Mechanics, 2012, 44(3): 537-545.
［15］李冬梅. 多场耦合及多相材料的柔顺机构拓扑优化研究[D]. 广州：华南理工大学，2011.Li D M. Topology Optimization of Compliant Mechanisms with Multiphysics Fields Coupling and Multiphase Materials[D]. Guangzhou: South China University of Technology, 2011.
［16］张晖，刘书田，张雄. 拓扑相关热载荷作用下稳态热传导结构拓扑优化[J]. 中国机械工程，2009，20(11)：1339-1343.Zhang H, Liu S T, Zhang X. Topology optimization of steady-state heat conduction problems with design-dependent heat loads[J]. China Mechanical Engineering, 2009, 20(11):1339-1343.
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