Modelling of laser beam spot-weld using 2-D hybrid crack finite elements

Chunhui Yang, Y. Zhang

    Research output: Chapter in Book / Conference PaperConference Paperpeer-review

    Abstract

    ![CDATA[Laser beam spot-welding is widely applied to join sheet metals for automotive components especially for thinsheet components in automotive industries. The spot welds in such metallic structures contribute a lot to the integrated strength and fatigue life for the whole structures and they are responsible for their damage or collapse in some loading cases. In this paper, the 2-D hybrid special finite elements each containing an edge crack are employed to study the fracture behaviors of laser beam spot-welds. Hence the calculation accuracy in the vicinity of crack tips is ensured, and a better description of stress singularity with only one hybrid element surrounding one crack is provided. The numerical modeling for laser beam spot-welds subjected to three typical modes ofloadings including tension-lap, shear-lap and angle-clip can be greatly simplified with the applications of such elements. Three specimens under lap-shear, lap-tension and angle clip are devised and analyzed respectively, and main fracture parameters such as stress intensity factors and the initial direction of crack growth are obtained through tinite element analyses. The computed results ti'om numerical examples demonstrate the validity and versatility of the proposed modeling.]]
    Original languageEnglish
    Title of host publicationProceedings of the 8th Asia Pacific Conference on Materials Processing (APCMP 2008), 15-20 June 2008, Guilin-Guangzhou, China
    PublisherFrontiers of Design and Manufacturing
    Pages1137-1142
    Number of pages6
    ISBN (Print)9780958069298
    Publication statusPublished - 2008
    EventAsia Pacific Conference on Materials Processing -
    Duration: 15 Jun 2008 → …

    Conference

    ConferenceAsia Pacific Conference on Materials Processing
    Period15/06/08 → …

    Fingerprint

    Dive into the research topics of 'Modelling of laser beam spot-weld using 2-D hybrid crack finite elements'. Together they form a unique fingerprint.

    Cite this