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International Journal of Automotive Technology > Volume 20(3); 2019 > Article
International Journal of Automotive Technology 2019;20(3): 559-568.
doi: https://doi.org/10.1007/s12239-019-0053-4
THEORETICAL ANALYSIS ON BENDING COLLAPSE OF REINFORCED THIN-WALLED HAT-SHAPED SECTION BEAMS
Guang Chen1, Chao Chen2
1Hebei University of Technology
2China Automotive Testing and Research Center Co., Ltd.
PDF Links Corresponding Author.  Guang Chen , Email. chenguang@hebut.edu.cn
ABSTRACT
The Reinforced Thin-walled Hat-shaped Section (RTHS) beams is widely used in automobile body. The bending collapse characteristic of the RTHS beams plays an important role in the crashworthiness. The paper focuses on the theoretical analysis on the bending collapse characteristic of the RTHS beams. This paper presents a method to produce the maximum bending strength of the RTHS beams. And then a theoretical analysis of the bending collapse characteristic is presented on two bending collapse modes of the RTHS beams with the kinematic approach. The accuracy of the theoretical calculations is validated through the comparison with quasi-static bending finite element simulations on 24 different beams with three kinds of materials, three different section dimensions and thicknesses. The theoretical solution shows good agreement with the finite element analysis results.
Key Words: Crashworthiness, Thin-walled beams, Bending collapse, Theoretical model, Kinematics method
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