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Modeling of friction-stir butt-welds and its application in automotive bumper impact performance Part 2. Impact modeling and bumper crash performance

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Abstract

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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Authors and Affiliations

  1. Wichita State University, Wichita, KS, USA

    Sachin Patil, Yi Yang Tay, Farzad Baratzadeh & Hamid Lankarani

  2. Advanced Joining and Processing Laboratory, National Institute for Aviation Research, Wichita, KS, USA

    Farzad Baratzadeh

Authors
  1. Sachin Patil
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  2. Yi Yang Tay
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  3. Farzad Baratzadeh
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  4. Hamid Lankarani
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Corresponding author

Correspondence to Sachin Patil.

Additional information

Recommended by Editor Chongdu Cho

Sachin Patil is doctoral student of Dr. Hamid Lankarani, Mechanical Engineering at Wichita State University. He has specialized in the application of explicit integration techniques for crashworthiness and impact weld failure problems. He has over 15 years of expertise in the field of numerical simulations, and have the distinction of being qualified as crash analyst with weld failure propagation. He has authored scholarly articles in the crashworthiness, optimization field, in professional as well as major trade publications and consult on the use of numerical simulations using LS-DYNA/ABAQUS.

Hamid Lankarani is a Professor of Mechanical Engineering and a Senior Fellow of the National Institute for Aviation Research, at Wichita State University. He began his professional career in 1981. Dr. Lankarani is one of the world’s leading researchers and educators in the field of impact dynamics, automotive and aircraft crashworthiness, occupant protection, and injury biomechanics.

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Patil, S., Tay, Y.Y., Baratzadeh, F. et al. Modeling of friction-stir butt-welds and its application in automotive bumper impact performance Part 2. Impact modeling and bumper crash performance. J Mech Sci Technol 31, 3225–3232 (2017). https://doi.org/10.1007/s12206-017-0612-4

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  • DOI: https://doi.org/10.1007/s12206-017-0612-4

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