Details:

Creators:
Caccese, Vincent ; Yorulmaz, Serdar
Caccese, Vincent ; Yorulmaz, Serdar Less -
Corporate Creators:
University of Maine. Dept. of Mechanical Engineering
Subject/TRT Terms:
[+]
Bridge Decks Field Studies Finite Element Method Lasers Literature Reviews Panels Sandwich Construction Steel Bridges Stiffness Welding Weld Strength
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
Collection(s):
US Transportation Collection
Main Document Checksum:
[+]
urn:sha256:702130a07eee5856b292d6aac454ca16d7aaab21d6ec8a1cfa103e4328978fac
Download URL:
https://rosap.ntl.bts.gov/view/dot/27127/dot_27127_DS1.pdf
File Type:

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