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Laser welded steel sandwich panel bridge deck development : finite element analysis and stake weld strength tests.

File Language:
English


Details

  • Creators:
    Caccese, Vincent ; Yorulmaz, Serdar
  • Corporate Creators:
    University of Maine. Dept. of Mechanical Engineering
  • Subject/TRT Terms:
  • Publication/ Report Number:
    42987
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    Maine
  • Corporate Publisher:
    Maine. Dept. of Transportation
  • Abstract:
    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.
  • Format:
    PDF
  • Download URL:
    https://rosap.ntl.bts.gov/view/dot/27127/dot_27127_DS1.pdf
  • File Type:
    Filetype[PDF - 4.33 MB]
  • Collection(s):
    US Transportation Collection
  • Main Document Checksum:
    urn:sha256:702130a07eee5856b292d6aac454ca16d7aaab21d6ec8a1cfa103e4328978fac
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