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Alternative TitleThermo-mechanical Coupling Field Simulation of Complex Thin-wall Part Laser Rapid Prototype Process
王福雨; 刘伟军; 赵宇辉; 孔源; 来佑彬
Source Publication机械工程学报
Indexed ByEI ; CSCD
EI Accession number20131616214619
Contribution Rank1
Keyword热力耦合场 激光直接成形 钛合金 数值模拟
Other AbstractThe research is focused on the relationship between the thermal field and thermal stress field during the process of the blade direct laser forming, so as to improve the forming quality. A hollow blade has been taken as example. According to the blade scatter-plot measured by the laser measurement instrument, the blade outline is approximated by a series of arc splines. Using finite element software MSC.Marc, a finite element model of arc approximation of the Ti-6Al-4V (TC4) hollow blade is established, and the hollow blade of laser direct forming is simulated to acquire the thermal field and thermal stress field in the forming and cooling process. During the forming process, the temperature of the forming hollow blade is increased and thermal stress of the already formed parts constantly changes with the thermal cycle due to the heat accumulation. And the part with a smaller curvature radius has a greater thermal stress which is affected by thermal cycle slightly. After the forming process, the reduction of the whole temperature leads to the thermal stress of every part rising gradually. Moreover, analyzing the distribution of the thermal field and thermal stress field, the correlation between the curvature radius and thermal field and thermal stress field can be obtained. The forming method of improving the quality is put forward based on the simulation result, summarized correlation, and experience. Finally, the real part just like the simulation model is worked out by utilizing the laser direct forming technology to verify the correctness of the simulation and summarized relationship.
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Document Type期刊论文
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GB/T 7714
王福雨,刘伟军,赵宇辉,等. 复杂薄壁零件激光快速成形过程的热力耦合场数值模拟[J]. 机械工程学报,2013,49(5):191-198.
APA 王福雨,刘伟军,赵宇辉,孔源,&来佑彬.(2013).复杂薄壁零件激光快速成形过程的热力耦合场数值模拟.机械工程学报,49(5),191-198.
MLA 王福雨,et al."复杂薄壁零件激光快速成形过程的热力耦合场数值模拟".机械工程学报 49.5(2013):191-198.
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