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Interaction and Multiscale Mechanics
  Volume 6, Number 2, July 2013, pages 257-270
DOI: http://dx.doi.org/10.12989/imm.2013.6.2.257
 

A coupled finite element/meshfreemoving boundary method for self-piercing riveting simulation
Wayne Cai, Hui-Ping Wang and C.T. Wu

 
Abstract     [Full Text]
    The use of lightweight materials has been steadily increasing in the automotive industry, and presents new challenges to material joining. Among many joining processes, self-piercing riveting (SPR) is particularly promising for joining lightweight materials (such as aluminum alloys) and dissimilar materials (such as steel to Al, and metal to polymer). However, to establish a process window for optimal joint performance, it often requires a long trial-and-error testing of the SPR process. This is because current state of the art in numerical analysis still cannot effectively resolve the problems of severe material distortion and separation in the SPR simulation. This paper presents a coupled meshfree/finite element with a moving boundary algorithm to overcome these numerical difficulties. The simulation results are compared with physical measurements to demonstrate the effectiveness of the present method.
 
Key Words
    meshfree method; element free galerkin method; finite element method; moving boundary; self piercing riveting
 
Address
1Research and Development Center, General Motors R&D Wayne Cai, Hui-Ping Wang: Center, 30500 Mound Road, Warren,
MI 48090, USA
C.T. Wu: Livermore Software Technology Corporation, 7374 Las Positas Road, Livermore,CA 94550, USA
 

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