Modeling and Simulating for Multi-pass Welding Process of Large Welded Structures

摘要：

The simulation model for multi-pass welding process of large welded structures would exceed acceptable computational capacity due to large element numbers and too many increment steps. So, the FE model must be meshed with a certain mesh density. In this paper, a welded railway bogie frame is given as an example to study the issue. The related model is built by using solid and shell elements together, and shell elements are used to achieve the transition between 3D and 2D elements to avoid the convergence problem leaded by rigid link. And then, the multi-pass welding deformations are simulated on Sysweld platform by using the average welding thermal cycles on the basis of the reasonable welding lines division. It indicates that these methods are feasible for simulating multi-pass welding process of large welded structures by comparing the computed results with the corresponding actual measured values. The work would also be useful for optimizing welding sequence, clamping position, and process parameters of large welded structures.

关键词： FE modeling simulating multi-pass welding

作者: Song Xingkui Yang Xinhua Wang Yuedong

作者单位: School of Material Science and Engineering Shenyang University of Technology Shenyang, China School of Traffic and Transportation Dalian Jiaotong University Dalian, China

会议类型: 国际会议

会议名称: 2010 International Conference on Digital Manufacturing and Automation(2010 数字制造与自动化国际会议 ICDMA 2010)

会议地点: 长沙

会议语种:英文

页码: 943-945

在线出版日期: 2010-12-18（万方平台首次上网日期，不代表论文的发表时间）