Fatigue Life Reliability and Robustness of Aluminum Car Body U-Box Structure with Self-Piercing Riveted Joints

Salzman, Ronald H.; Gryc, William E.; Agrawal, Hari; Bollimunta, Sreenivasa

doi:10.4271/2003-01-0468

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2005

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“…Operating strength affected by defects such as fume and spatter, which could compromise the safety and cleanness of the working environment, are a quality concern. On the contrary, SPR is a relatively quiet process that does not produce fume and/or spatter, and requires less power than conventional techniques [1][2][3][4]. SPR has many advantages such as high-energy efficiency, bond simplicity between heterogeneous materials, and no thermal defect in the welding region compared with conventional techniques.…”

Section: Introductionmentioning

confidence: 99%

Assessment for Structural Stiffness and Fatigue Life on Self-Piercing Rivet of Car Bodies

Kim

Lee³

et al. 2005

KEM

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The highest structural stiffness of an SPR joint was exhibited in the specimen constituted with 5J32 and ASPH, and the lowest stiffness in that constituted with the single 5J32 combination. Even though the structural stiffness of an SPR joint specimen is roughly the same with another type of joint, the fatigue life is different according to sheet material and its thickness. The results of numerical analysis are nearly identical to those of experiments. Thus, it can be that FEM modeling in accordance with FEMFAT is effective in assessing the stiffness and fatigue life of SPR joints, and can be an alternative to experimental analysis.

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Section: Introductionmentioning

confidence: 99%