Numerical Simulation of Radial Impact on Sunflower-Like Sandwich Cylindrical Shell

YAN Dong; WANG Genwei; SONG Hui; WANG Bin

doi:10.11858/gywlxb.20190858

Volume 34 Issue 5

Sep 2020

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Chinese Journal of High Pressure Physics > 2020 > 34(5): 054201.

YAN Dong, WANG Genwei, SONG Hui, WANG Bin. Numerical Simulation of Radial Impact on Sunflower-Like Sandwich Cylindrical Shell[J]. Chinese Journal of High Pressure Physics, 2020, 34(5): 054201. doi: 10.11858/gywlxb.20190858

Citation:

YAN Dong, WANG Genwei, SONG Hui, WANG Bin. Numerical Simulation of Radial Impact on Sunflower-Like Sandwich Cylindrical Shell[J]. Chinese Journal of High Pressure Physics, 2020, 34(5): 054201. doi: 10.11858/gywlxb.20190858

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Numerical Simulation of Radial Impact on Sunflower-Like Sandwich Cylindrical Shell

doi: 10.11858/gywlxb.20190858

YAN Dong^{1, 2
,},
WANG Genwei^{1, 2,*
,
,},
SONG Hui^{1, 2},
WANG Bin^{1, 3}

1.
Institute of Applied Mechanics, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
2.
Key Laboratory of Material Strength and Structure Impact in Shanxi Province, Taiyuan 030024, Shanxi, China
3.
Department of Mechanical and Aerospace Engineering, London Brunel University, London UB8 3PH, UK

Received Date: 18 Nov 2019
Rev Recd Date: 28 Nov 2019

Abstract

Abstract

Because of their excellent lightness and crashworthiness, metal thin-walled structures have been widely used in the collision kinetic energy dissipation system of vehicles such as automobiles, airplanes and trains. In this paper, the deformation mode, energy absorption capacity, specific energy absorption and average compression force of sunflower thin-wall sandwich structure under radial impact load in two directions are studied. The results show that the wall thickness, the number of petals, the loading speed and the loading direction of the thin-wall sandwich structure of sunflower have certain effects on the impact resistance of the structure. Under the condition of constant mass, with the increase of the thickness of the outer shell, the energy absorption efficiency of the thin-walled structure under the tip pressure is reduced. The specific energy absorption under gap side pressure was 44.6% higher than that under tip side pressure. With the change of the number of petals, the energy absorption efficiency of thin-walled metal structure has an optimal value.
- metal thin-walled structure,
- energy,
- radial compression,
- simulation

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References(16)

References

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Numerical Simulation of Radial Impact on Sunflower-Like Sandwich Cylindrical Shell

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Numerical Simulation of Radial Impact on Sunflower-Like Sandwich Cylindrical Shell

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