Journal
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY
Volume 31, Issue 7, Pages 3225-3232Publisher
KOREAN SOC MECHANICAL ENGINEERS
DOI: 10.1007/s12206-017-0612-4
Keywords
Friction stir butt welding (FSW); Thermal modeling; Johnson-cook failure model; Sled test; Vehicle bumper assembly
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Ever increasing requirements regarding vehicle safety have led to rapid developments in various joining process. Among FSW widely used for Aluminum alloy welded structure of car body because of their remarkable performance in welding. For a better understanding of this performance, it is necessary to determine the behavior of butt weld in service conditions. In earlier phase of this study, thermo mechanical simulations and analysis are performed to understand the thermal behavior in the FSW weld zones. The developed models are correlated against published experimental results in terms of temperature profile of the weld zone. The objectives of the second part of this work is to develop and demonstrate an FE model of bumper and crash box assembly that would improve on the current modeling techniques for the mechanical response of welds in structural problems.
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