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| Damage characteristics of T800-CFRP laminates under non-normal impact of ice balls and tungsten beads |
| SHANG Xiaozhuang1, LIU Yaolu1,2, FENG Xiaowei3, HU Ning1,4, TAN Xiaojun3, HU Yanhui3 |
| 1.College of Aerospace Engineering, Chongqing University, Chongqing 400044, China;
2.Chongqing Municipal Key Lab of Heterogeneous Material Mechanics, Chongqing University, Chongqing 400044, China;
3.Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang 621900, China;
4.College of Mechanical Engineering, Hebei University of Technology, Tianjin 300401, China |
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Abstract The damage characteristics of T800-CFRP laminates under non-normal impact of hail ices and wolfram balls were studied by experiments and simulations. Firstly, the experiments of the high-speed impact of hail ices and wolfram balls on T800-CFRP laminates under given working conditions were carried out to verify the effectiveness of the simulation model; and then the damage characteristics and theirs differences of T800-CFRP laminates impacted by two kinds of impact bodies with different impact energies and impact angles were discussed. Research results have shown that wolfram balls can cause the perforation damage to laminates when the impact energy is low, and the damage degree of the laminates decreases with the increase of the impact energy; the impact energy threshold of hail ices causing damage to laminates is much higher than that of wolfram balls, and the damage degree increases significantly with the increase of the impact energy; the damage caused by wolfram balls at the impact angles of 450 and 600 is much more serious than that caused by the normal impact, while the damage caused by the impact angle of 300 is less than that caused by the normal impact; the damage degree of the laminate decreases with the increase of the impact angle by hail ices. This study is helpful to deepen the understanding of the damage and failure behavior of T800-CFRP laminates under impact load, and has important scientific significance and engineering value.
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Received: 21 September 2022
Published: 15 June 2024
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