Development of Fracture Prediction FEA Model for Laser Welded Joints

溶接部破断予測FE 解析モデルのレーザ溶接継手への応用

A finite element analysis (FEA) model for predicting the weld fracture is developed using local equivalent plastic strain coupled with the stress triaxiality σm/<span style="text-decoration: overline;">σ</span> (σm: hydrostatic stress,<span style="text-decoration: overline;"> σ</span>: equivalent stress) as a fracture criterion. In this report, this FEA model is applied to tension tests of laser welded joints. FEA results show good agreement with experimental results, such as joint strengths or fracture modes. This method enables clarification of the laser weld fracture phenomenon and the accurate fracture prediction under the varied load modes.

• Record URL:
  https://doi.org/10.11351/jsaeronbun.47.609
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/02878321
• Authors:
  • Ueda, Hideki
  • Fujimoto, Hiroki
  • Nakayama, Eisuke
• Publication Date: 2016

Language

• English
• Japanese

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: pp 609-614
• Serial:
  • Transactions of Society of Automotive Engineers of Japan
  • Volume: 47
  • Issue Number: 2
  • Publisher: Society of Automotive Engineers of Japan
  • ISSN: 0287-8321
  • EISSN: 1883-0811
  • Serial URL: https://www.jstage.jst.go.jp/browse/jsaeronbun
• Publication flags:

  Open Access (libre)

Subject/Index Terms

• TRT Terms: Finite element method; Fracture mechanics; Iron; Joints; Lasers; Steel; Welding
• Subject Areas: Design; Materials; Transportation (General);

Filing Info

• Accession Number: 01661695
• Record Type: Publication
• Source Agency: Japan Science and Technology Agency (JST)
• Files: TRIS, JSTAGE
• Created Date: Feb 28 2018 5:03PM