Numerical simulation of Whipple shield hypervelocity impact based on optimal transportation meshfree method

FAN Jiang; YUAN Yuan; LIAO Huming; YUAN Qinghao; CHEN Gaoxiang; LI Bo

doi:10.11883/bzycj-2019-0241

Volume 40 Issue 7

Jul. 2020

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FAN Jiang, YUAN Yuan, LIAO Huming, YUAN Qinghao, CHEN Gaoxiang, LI Bo. Numerical simulation of Whipple shield hypervelocity impact based on optimal transportation meshfree method[J]. Explosion And Shock Waves, 2020, 40(7): 074201. doi: 10.11883/bzycj-2019-0241

Citation:

FAN Jiang, YUAN Yuan, LIAO Huming, YUAN Qinghao, CHEN Gaoxiang, LI Bo. Numerical simulation of Whipple shield hypervelocity impact based on optimal transportation meshfree method[J]. Explosion And Shock Waves, 2020, 40(7): 074201. doi: 10.11883/bzycj-2019-0241

Citation:

FAN Jiang, YUAN Yuan, LIAO Huming, YUAN Qinghao, CHEN Gaoxiang, LI Bo. Numerical simulation of Whipple shield hypervelocity impact based on optimal transportation meshfree method[J]. Explosion And Shock Waves, 2020, 40(7): 074201. doi: 10.11883/bzycj-2019-0241

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Numerical simulation of Whipple shield hypervelocity impact based on optimal transportation meshfree method

doi: 10.11883/bzycj-2019-0241

1.
School of Energy and Power Engineering, Beihang University, Beijng 100191, China
2.
Department of Mechanical and Aerospace Engineering, Case Western Reserve University, Cleveland OH44106, USA

Received Date: 2019-06-14
Rev Recd Date: 2019-02-18
Publish Date: 2020-07-01

Abstract

Abstract

The Whipple shield is often used for protecting spacecraftfrom the impact of space debris. There are a lot of defects in the general numerical simulation methods for hypervelocity impact problems, thus this paper used OTM (optimal transportation meshfree)method to simulate the impacting process. OTM is a Lagrangian meshless method which ischaracterized by applying optimal transportation theory to discretize time, using a set of nodal-points with position information and a set of material-points with material information to discretize space,utilizing LME (local maximum entropy) approximation schemes to get interpolation functions, and simulating the failure of materials by material-point failure method related toenergy release rate. In this paper, OTM method was firstly used to simulate the impact of an aluminum ball on a single aluminum plate. The applicability of OTM method in hypervelocity impact was verified by comparing with the test results and the calculation results of other SPH methods. Then we used OTM method to simulate the hypervelocity impact of Whipple shield. The damage of the outer bumper and the spacecraft wall predicted by the OTM method was compared with the experimental results. It could be seen that the OTM method could not only predict the diameter of the bullet hole of the outer bumper, but also accurately simulate the spalling and penetration of the spacecraft wall, and the shape of the debris cloud.
- optimal transportation meshfree,
- hypervelocity impact,
- whipple shield,
- damage

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References(19)

References

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