Study on Compression Test and Equivalent Simulation Model of Aluminum Foam

WANG Jiaming; TAN Yuedong; JIN Zhihui; YAN Liying; JI Cheng; LI Zhigang; SHAO Teli

doi:10.3969/j.issn.0258-2724.20210563

Volume 58 Issue 1

Jan. 2023

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Journal of Southwest Jiaotong University > 2023 > 58(1): 91-99, 116.

SUN Yanna, LI Lihan, WANG Yukai. Evaluation Parameter Research of Asphalt Binder Fatigue[J]. Journal of Southwest Jiaotong University, 2014, 27(6): 1102-1107. doi: 10.3969/j.issn.0258-2724.2014.06.025

Citation:

WANG Jiaming, TAN Yuedong, JIN Zhihui, YAN Liying, JI Cheng, LI Zhigang, SHAO Teli. Study on Compression Test and Equivalent Simulation Model of Aluminum Foam[J]. Journal of Southwest Jiaotong University, 2023, 58(1): 91-99, 116. doi: 10.3969/j.issn.0258-2724.20210563

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Study on Compression Test and Equivalent Simulation Model of Aluminum Foam

doi: 10.3969/j.issn.0258-2724.20210563

1.
School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China
2.
Dalian Locomotive & Rolling Stock Co., Ltd., Dalian 116022, China
3.
Traffic Control Technology Co., Ltd., Beijing 100070, China

Received Date: 20 Jul 2021
Rev Recd Date: 23 Nov 2021

Available Online: 25 Oct 2022

Publish Date: 14 Jan 2022

Abstract

Abstract

In order to investigate the effectiveness of aluminum foam for helicopter crashworthiness design, the mechanical properties of closed cell aluminum foam with two relative densities were tested at quasi-static (0.001 /s) and high strain rates (500 /s, 1000 /s) based on universal testing machine and Hopkinson bar, respectively. An equivalent finite element (FE) model of aluminum foam which considers the strain rate was established. The developed equivalent model of the aluminum foam with different relative densities was applied to the dropping simulation of a helicopter FE model. The crushing level and the deformation of the helicopter were investigated. The results show that the platform stress and mass specific energy absorption increase with relative density and strain rate, but the opposite is true for densification strain. The equivalent finite element model has high accuracy whose response curve can keep consistent with the experimental results. In addition, the maximum deformation of the helicopter floor has been reduced by 28% and 73% and the load-bearing pressure on each component has been reduced by 28% and 42% on average as the aluminum foam with different relative densities was added into the bottom cockpit of the helicopter. The load carrying capacity of aluminum foam with high relative density is higher and more effective.
- aluminum foam,
- strain rate,
- relative density,
- energy absorption,
- equivalent model,
- helicopter crashworthiness

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References(19)

References

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