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TIG焊墙体成型结构的热应力分析 被引量:1

Thermo-Mechanical Study on TIG Welding Deposited Thin-Walled Structures
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摘要 以简单的墙体成型为例,提出三维热-机耦合模型,用单元生死模拟金属的堆积成型,分析2种不同堆积路径(Z型焊接和同一方向焊接)下的温度场和残余应力分布.结果表明:在不同堆积路径下,温度场和残余应力的分布不同;同一方向焊接所产生的温度场及残余应力比Z型焊接小,但在墙体结束端底部位置,同一方向的Z向应力zσ较高,容易造成墙体和基板断开;Z型焊接在结束端上呈现波动式的高Z向拉应力,容易造成层状撕裂;在熔焊快速制造中,建议焊前对基板进行预热,并在焊后对整个结构进行热处理,以减小残余应力,提高其使用性能. Taking the simple wall structure as an example,3D thermo-mechanical couple model was developed using the element birth technique to simulate the rapid prototyping(RP) process.The thermal behavior and residual stress were analyzed during the fabrication of a simple wall structure using TIG welding technology.Two cases are studied: a straight wall fabricated by the zig-zag deposition strategy and a straight wall fabricated by the one-direction deposition strategy.It is found that different strategy has differ...
作者 朱政强 马国红 张华 ZHU Zheng-qiang; MA Guo-hong; ZHANG Hua (School of Mechanical & Electrical Engineering; Nanchang University; Nanchang 330031; China);
出处 《上海交通大学学报》 EI CAS CSCD 北大核心 2008年第S1期共4页 Journal of Shanghai Jiaotong University
基金 国家自然科学基金资助项目(50865007) 江西省自然科学基金资助项目(2007GQC1825)
关键词 熔焊快速制造 热应力分析 温度场 残余应力 rapid prototyping based on welding heat-mechanical couple analysis temperature field residual stress
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  • 1[1]Rosochowski A,Matuszak A. Rapid tooling: the state of the art.Journal of Materials Processing Technology ,2000,106(10): 191~198 被引量:1
  • 2[2]Khaing M W,Fuh J Y H, Lu L. Direct metal laser sintering for rapid tooling: processing and characterization of EOS parts.Journal of Materials Processing Technology, 2001,113(6):269~272 被引量:1
  • 3Charalabos Doumanidis, Yong-Min Kwak. Multivariable adaptive control of the bead profile geometry in gas metal arc welding with thermal scanning. International Journal of Pressure Vessels and Piping, 2002, 79: 251~262 被引量:1
  • 4Beardsley, Heather Elizabeth. Controlling heat and mass transfer for droplet-based rapid prototyping. PhD Thesis, TUFTS UNIVERSITY,1998 被引量:1
  • 5Fourligkas, Nikolaos. A new thermal rapid prototyping process by fused material deposition: Implementation, modeling and control. PhD Thesis, TUFTS UNIVERSITY,2000 被引量:1
  • 6Doyle T E. Shape melting technology. 3rd Intl. Conf. Desktop Manufacturing, 1991 被引量:1
  • 7Ashley S. Prototyping with advanced tools. Mech. Eng., 1994(6): 48-55 被引量:1
  • 8Beradsley H E, Kovacevic R. New rapid prototyping technique based on 3D welding. Proc. of the 31st CIRP International Seminar on Manufacturing Systems, 1998(5):26-28 被引量:1
  • 9Wang H, Kovacevic R. Rapid prototyping based on variable polarity gas tungsten arc welding for a 5356 aluminium alloy. Journal of Engineering Manufacture, 2001,215(11): 1519-1527 被引量:1
  • 10Yong-Min Kwak, Charalabos C, Doumanidis. Geometry regulation of materials deposition in near-net shape manufacturing by thermally scanned welding. Journal of Manufacturing Processes, 2002,4(1): 28-41 被引量:1

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