直升机尾传动轴弹击损伤数值模拟研究

未雷1,林瑶洁1,吴汪箭1,陈蔚芳1,王希2,朱如鹏1,王旦1

振动与冲击 ›› 2024, Vol. 43 ›› Issue (13) : 324-332.

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PDF(2879 KB)
振动与冲击 ›› 2024, Vol. 43 ›› Issue (13) : 324-332.
论文

直升机尾传动轴弹击损伤数值模拟研究

  • 未雷1,林瑶洁1,吴汪箭1,陈蔚芳1,王希2,朱如鹏1,王旦1
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Numerical simulation of helicopter tail drive shaft projectile impact damage

  • WEI Lei1, LIN Yaojie1, WU Wangjian1, CHEN Weifang1, WANG Xi2, ZHU Rupeng1, WANG Dan1
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摘要

面向直升机尾传动轴抗弹击设计,开展了不同因素影响下尾传动轴弹击损伤规律数值模拟研究。基于有限元仿真软件建立了尾传动轴弹击损伤数值仿真模型,并通过弹击试验验证模型的可靠性。进而基于经验证的数值仿真模型,分析了偏移量和入射角两个典型参数对尾传动轴弹击损伤的影响规律。分析结果表明:尾传动轴弹击损伤程度随着子弹偏移量及入射角的增大,呈现先增大后减小的趋势,在切边位置、入射角为75°工况下尾传动轴弹击损伤最为严重。在此基础上,进一步研究了摩擦系数、子弹入射速度、尾传动轴转速、子弹偏航角四个弹靶参数对尾传动轴弹击损伤的影响规律。研究结果表明:摩擦系数对尾传动轴弹击损伤影响较小,尾传动轴转速、子弹入射速度和子弹偏航角均对尾传动轴弹击损伤有较大影响。

Abstract

For the anti-ballistic design of the helicopter tail rotor drive shaft, a numerical simulation of ballistic damage of the helicopter tail rotor drive shaft with different influencing factors has been carried out. Based on the finite element simulation software, a numerical simulation model of the ballistic damage of the tail rotor drive shaft has been established, and the reliability of the model has been verified. Then, based on the verified numerical simulation model, the influences of two typical parameters, offset and incidence angle, on the ballistic damage of the tail rotor drive shaft have been analyzed. The results show that the degree of the ballistic damage of the tail rotor drive shaft increases at first and then decreases with the increase of bullet offset and incidence angle, and the ballistic damage of the tail rotor drive shaft becomes the most serious under the condition of trimming position and with incidence angle of 75°. Besides, the effects of four additional impact parameters, namely, friction coefficient, incidence velocity of the bullet, rotational speed of the drive shaft and yaw angle of the bullet, on the ballistic damage have been further investigated. The results demonstrate that the friction coefficient has less influence on the damage, and the rotational speed of the drive shaft, incidence speed and yaw angle of the bullet have greater influence on the damage.

关键词

直升机 / 尾传动轴 / 弹击损伤 / 数值模拟

Key words

helicopter / tail rotor drive shaft / ballistic damage / numerical simulation

引用本文

导出引用
未雷1,林瑶洁1,吴汪箭1,陈蔚芳1,王希2,朱如鹏1,王旦1. 直升机尾传动轴弹击损伤数值模拟研究[J]. 振动与冲击, 2024, 43(13): 324-332
WEI Lei1, LIN Yaojie1, WU Wangjian1, CHEN Weifang1, WANG Xi2, ZHU Rupeng1, WANG Dan1. Numerical simulation of helicopter tail drive shaft projectile impact damage[J]. Journal of Vibration and Shock, 2024, 43(13): 324-332

参考文献

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