Energy absorption characteristics of axial series energy absorption tubes

ZHANG Xiao; XIAO Yong; LIU Hongbo; LIU Qi; DU Xiaokun; ZHANG Yangyang

doi:10.11883/bzycj-2023-0460

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ZHANG Xiao, XIAO Yong, LIU Hongbo, LIU Qi, DU Xiaokun, ZHANG Yangyang. Energy absorption characteristics of axial series energy absorption tubes[J]. Explosion And Shock Waves. doi: 10.11883/bzycj-2023-0460

Citation:

ZHANG Xiao, XIAO Yong, LIU Hongbo, LIU Qi, DU Xiaokun, ZHANG Yangyang. Energy absorption characteristics of axial series energy absorption tubes[J]. Explosion And Shock Waves. doi: 10.11883/bzycj-2023-0460

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Energy absorption characteristics of axial series energy absorption tubes

doi: 10.11883/bzycj-2023-0460

Beijing Institute of Space Launch Technology, Beijing 100076, China

Received Date: 2023-12-24
Rev Recd Date: 2024-04-02

Available Online: 2024-05-08

Abstract

Abstract

To address the issue of peak load reduction for impact loads in engineering technology, the energy absorption characteristics of axial series energy absorbing tubes was investigated through a combination of numerical simulation and experimentation. Firstly, the Johnson-Cook dynamic constitutive parameters of the material 06Cr18Ni11Ti GB/T1220-2007 of energy absorbing tubes were established and evaluated based on high-speed tensile tests which indicates 06Cr18Ni11Ti has obvious strain rate hardening effect. Subsequently, numerical simulation and high-speed impact tests were conducted to examine the energy absorption characteristics of energy absorption tubes, with an evaluation of consistency between numerical simulation and test results. The numerical simulation was based on the time-step ABAQUS/Explicit finite element simulation platform. The high speed impact test system used the high pressure gas inside the air actuated piston cylinder as the power source, which could accelerate the mass block to a speed of 30 m/s. Finally, the energy absorption evaluation indexes between the axial series configuration and the single configuration of the energy absorption tube were compared and analyzed by numerical simulation. The analysis demonstrates that deformation mode, load curve, and energy absorption evaluation indexes from both numerical simulations and impact tests exhibit good agreement. The accuracy of material performance parameters confirms the effectiveness of simulation prediction methods while validating reasonability and reliability of high-speed impact test schemes. Compared to axial series configurations with identical structural parameters, single-tube configurations display asymmetric and unstable twist deformations during compression processes. Single-tube configurations experience a 13% reduction in effective compression stroke along with a 33.4% increase in peak load, 15% increase in instantaneous impact load, 13% increase in average compression force, as well as a 17.7% increase in peak-to-average load ratio. Consequently, axial series configurations prove to be more ideal energy absorbing structures.
- axial series,
- energy absorption tube,
- dynamic constitutive,
- finite element analysis,
- high-speed impact test

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References(18)

References

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