Laser Welded Steel Sandwich Panel Bridge Deck Development: Finite Element Analysis and Stake Weld Strength Tests

This report summarizes the analysis of laser welded steel sandwich panels for use in bridge structures and static testing of laser stake welded lap shear coupons. Steel sandwich panels consist of two face sheets connected by a relatively low-density core resulting in high strength and stiffness, which leads to promising design advantages. Steel sandwich panels offer substantial resistance to static and dynamic loads due to their high stiffness and substantial energy absorbing capacity. Panels of this kind are of interest for potential use in bridges for deck replacement. They are especially efficient in resisting dynamic events such as fatigue, impact or shock loading. A verification study is performed comparing finite element analysis and an analytical model to an experimental study documented in the literature. Results demonstrate good agreement between the approaches. Modeling techniques are developed from the verification study. Finite element analyses are subsequently employed to study the response of a laser welded steel sandwich panel case study of a deck replacement for a steel bridge located in Gardiner, Maine. The deck design results in a stiff structure that has a deflection of 1/1500 of the span at a depth of 7.25 inches. Structural response of stake welds was also investigated experimentally in a single lap shear configuration. Multiple pass welds consisting of 2 and 4 stake weld passes were fabricated and tested to assess the process of using multi-passes to increase weld resistance.

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  • Corporate Authors:

    University of Maine, Orono

    Department of Mechanical Engineering, 5711 Boardman Hall
    Orono, ME  United States  04469-5711

    Maine Department of Transportation

    Child House, 16 State House Station
    Augusta, ME  United States  04333-0016
  • Authors:
    • Caccese, Vincent
    • Yorulmaz, Serdar
  • Publication Date: 2009-9


  • English

Media Info

  • Media Type: Web
  • Edition: Final Report
  • Features: Appendices; Figures; Photos; References; Tables;
  • Pagination: 108p

Subject/Index Terms

Filing Info

  • Accession Number: 01153254
  • Record Type: Publication
  • Report/Paper Numbers: Report No. 09-09, Project No. C2006-014-RPT-01
  • Created Date: Mar 25 2010 9:17AM