Energy absorption characteristics of Ω-shaped thin-walled composite tubes with different ply orientations

WANG Yu; LI Yihang; HOU Bing; DOU Qingbo; ZHANG Xinyue; SUO Tao; LI Yulong

doi:10.11883/bzycj-2022-0525

Volume 43 Issue 7

Jul. 2023

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WANG Yu, LI Yihang, HOU Bing, DOU Qingbo, ZHANG Xinyue, SUO Tao, LI Yulong. Energy absorption characteristics of Ω-shaped thin-walled composite tubes with different ply orientations[J]. Explosion And Shock Waves, 2023, 43(7): 073101. doi: 10.11883/bzycj-2022-0525

Citation:

WANG Yu, LI Yihang, HOU Bing, DOU Qingbo, ZHANG Xinyue, SUO Tao, LI Yulong. Energy absorption characteristics of Ω-shaped thin-walled composite tubes with different ply orientations[J]. Explosion And Shock Waves, 2023, 43(7): 073101. doi: 10.11883/bzycj-2022-0525

Citation:

WANG Yu, LI Yihang, HOU Bing, DOU Qingbo, ZHANG Xinyue, SUO Tao, LI Yulong. Energy absorption characteristics of Ω-shaped thin-walled composite tubes with different ply orientations[J]. Explosion And Shock Waves, 2023, 43(7): 073101. doi: 10.11883/bzycj-2022-0525

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Energy absorption characteristics of Ω-shaped thin-walled composite tubes with different ply orientations

doi: 10.11883/bzycj-2022-0525

WANG Yu^{1, 4
,},
LI Yihang^{1, 2},
HOU Bing^{1, 2},
DOU Qingbo^{1, 2
,
,},
ZHANG Xinyue³,
SUO Tao^{1, 2},
LI Yulong^{1, 2}

1.
School of Aeronautics, Northwestern Polytechnical University, Xi’an 710072 , Shaanxi, China
2.
Shaanxi Key Laboratory of Impact Dynamics and Engineering Application , Xi’an 710072, Shaanxi, China
3.
Aviation Key Laboratory of Science and Technology on Structures Impact Dynamics, Aircraft Strength Research Institute of China, Xi’an 710065, Shaanxi, China
4.
The 705 Research Institute, China Shipbuilding Industry Corporation, Xi’an 710077, Shaanxi, China

Received Date: 2022-11-19
Rev Recd Date: 2023-03-15

Available Online: 2023-05-11

Publish Date: 2023-07-05

Abstract

Abstract

Ω-shaped composite tubes have certain application potential in terms of collision energy absorption and lightweight. To study the effects of ply orientation and loading rate on the energy absorption characteristics of the Ω-shaped composite tubes, quasi-static and dynamic axial compression experiments were carried out on carbon-fiber-reinforced composite Ω-shaped tubes by using an electronic universal testing machine and a high-speed hydraulic servo testing machine, respectively. In addition, the failure modes and evaluation index relevant to energy absorption were analyzed based on the crushing load-displacement curves and failure morphologies. In the experiments, the Ω-shaped tubes with three ply orientations, namely [0/90]₃_s, [0/45/90/−45]₃ and [±45]₃_s, were compressed under quasi-static and dynamic loading rates. Under quasi-static loading, the specimens with [0/90]₃_s and [0/45/90/−45]₃ ply orientations both showed progressive failure, while the specimens with [±45]₃_s ply orientation showed a catastrophic failure mode. The specific energy absorption (SEA) of the specimens with [±45]₃_s ply orientation is about half of those of the other two specimens due to different failure modes. Under the dynamic loading, the Ω-shaped tubes with three ply orientations, where the SEA almost remains the same, were all featured by the progressive crushing. Moreover, the SEAs of the specimens with [0/90]₃_sand [0/45/90/−45]₃ply orientations under dynamic loading are reduced by 29.70% and 20.97%, respectively, compared with those under quasi-static loading. However, the SEA of the specimens with [±45]₃_s ply orientation is 46.10% higher than that under quasi-static loading. The change of failure modes is the main reason for the increase of the SEA. Under quasi-static loading, the ply orientation has a certain effect on the SEA of the Ω-shaped tube, while under dynamic loading, its influence is relatively weak. The main reasons are as follows. Under a low loading rate, buckling fracture and interlaminar delamination of fiber and matrix gradually occur, resulting in a global response of the structure. On the other hand, under a higher loading rate, the contact time between the Ω-shaped tubes and the indenter is short, leading to a localized response, which is dominated by the loading rate, while the failure mode is less affected by the ply orientations.
- carbon-fiber-reinforced composite,
- Ω-shaped tube,
- ply orientation,
- energy absorption characteristic,
- failure mode

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References(25)

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