A study on the mechanical behavior of a crushable cylindrical corrugated component under axial impact

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Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (4) : 21-27.

FU Benyuan1, LIAO Changrong1, LI Zhuqiang1, ZHANG Peng1, JIAN Xiaochun2, WU Chunjiang2

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Abstract

Analyzing the mechanical behavior of a crushable multi-cylindrical-corrugated component under impact load is currently a challenge. This paper presents a theoretical methodology for evaluation of the deformation resistance of a crushable cylindrical-corrugated component under axial impact load. By investigating the collapse deformation characteristics, the deformation was divided into four sections: elastic deformation stage, plastic deformation stage before surface contact, mixed plastic deformation stage, and plastic deformation stage during surface contact. The theoretical mapping relationship between the deformation resistance and crushed displacement under different drop heights was obtained by Matlab Simulink. The theoretical relationship was compared with the experimental result, which showed a good agreement between the predicted resistant forces and the testing data under various drop heights. The result shows the feasibility of the proposed analytical methodology for the practical application of the crushable cylindrical-corrugated component.

Key words

crushable cylindrical-corrugated component / impact load / deformation resistance / strain-strengthening effect / strain rate hardening effect

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FU Benyuan1, LIAO Changrong1, LI Zhuqiang1, ZHANG Peng1, JIAN Xiaochun2, WU Chunjiang2. A study on the mechanical behavior of a crushable cylindrical corrugated component under axial impact[J]. Journal of Vibration and Shock, 2017, 36(4): 21-27

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