This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Aluminum Rail Rivet and Steel Rail Weld DOE and CAE Studies for NVH
Technical Paper
2001-01-1608
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Vehicle body with aluminum riveted construction instead of steel welded one will be a big challenge to NVH. In this paper, aluminum and steel rails with the dimensions similar to the rear rail portion of a typical mid-size sedan were fabricated. Rivets were used to assemble the aluminum rails while welds were used to assemble the steel rails. Adhesive, rivet/weld spacing, and rivet/weld location were the three major factors to be studied and their impact on NVH were investigated. The DOE matrix was developed using these three major factors. Modal tests were performed on those rails according to the DOE matrix. The FEA models corresponding to the hardware were built. CAE modal analysis were performed and compared with test data. The current in-house CAE modeling techniques for spot weld and adhesive were evaluated and validated with test data. The conclusions from this study would determine which factors among adhesive, rivet/weld spacing, and rivet/weld location is critical for NVH performance. The results will also guide the CAE simulation of welds/rivets.