超薄紫铜板激光焊接的建模与仿真_英文_.docx

Modeling and Simulation of Laser Weldingfor Ultra-thin Copper SheetYANG Zhao-jun 1, GAO Hong1,2, HAO Qing-bo1(1.Department of Mechanical Science and Engineering, University of Jilin, Changchun 130025, China;2. Department of Engineering, University of Changchun, Changchun 130022, China)Abstract: Experimental instrument investigated the laser welding of ultra-thin copper sheet. The rationalprocessing parameter was ascertained based on the analysis of experimental results. Temperature field of laser welding ultra-thin copper was simulated by finite analysis software-ANSYS. Model of laser welding heat source was founded. It is shown that the thermal field gradient of laser welding is larger, heat- affected zone is smaller than other welding method. The laser welding thermal field of ultra-thin copper sheet is oval, the isotherm is dense, the gradient of temperature is great at movement heater frontage; the isotherm is sparse, gradient of temperature is small at heater rear. The simulation results of welding frontage width are in accordance with the experimental results.Key words: laser welding; ultra-thin copper sheet; ANSYS; simulation超薄紫铜板激光焊接的建模与仿真杨兆军 1，高洪 1,2，郝庆波 1（1.吉林大学 机械科学与工程学院，长春 130025；2.长春大学 机械工程学院，长春 130022）摘 要：采用激光焊接了超薄紫铜板，在试验基础上确立了激光焊接超薄紫铜板的合理的工艺参数，并对焊接接头做了三维影像分析。利用有限元软件 ANSYS 对焊接进行了动态模拟。建立了激光焊接的热源模型。仿真结果表明： 激光焊接超薄紫铜板的温度场梯度大，热影响区小；热源后方的等温线稀疏，温度梯度小；在热源前方的等温线密 集，温度梯度大；焊缝正面宽度的仿真结果与试验结果相一致。关键词：激光焊接；超薄紫铜板；ANSYS；仿真中图分类号：TP15文献标识码：A文章编号：1004-731X (2008) 19-5254-04IntroductionThe copper is the metal that the human being made use of at the earliest stage, and also one of the most important metal materials in industry. It has very excellent electrical conductivity and thermal conductivity, normal temperature and the low temperature plasticity, corrosion resistance, is the metal material which is favor of lots of industries. such as electronics and automobile, etc. Along with the demand of the copper material enlarge continuous, the nervous situation of the c