| 飞机碰撞混凝土靶冲击载荷的解析研究 |
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| 引用本文： | 张超,欧卓成,温丽晶,段卓平,黄风雷. 飞机碰撞混凝土靶冲击载荷的解析研究[J]. 北京理工大学学报, 2015, 35(S2): 209-212 |
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| 作者姓名： | 张超 欧卓成 温丽晶 段卓平 黄风雷 |
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| 作者单位： | 北京理工大学机电学院, 北京 100081,北京理工大学机电学院, 北京 100081,环境保护部核与辐射安全中心, 北京 100082,北京理工大学机电学院, 北京 100081,北京理工大学机电学院, 北京 100081 |
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| 摘 要： | 为完善飞机碰撞混凝土靶的冲击载荷方程,提出在碰撞中飞机前端存在一个破碎区域,并应用应力波原理分析其形成机理、计算该区间长度;应用动量守恒原理推导含有破碎区域的飞机的冲击载荷方程. 计算和推导结果表明,由于破碎区域的存在,该区域的长度以及内部的速度分布共同决定了冲击载荷方程质量系数的大小. 计算不同的速度分布形式下系数的不同取值范围,并且分析不同系数取值范围的合理性.
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| 关 键 词： | 冲击动力学 应力波 破碎区域 速度分布 |
| 收稿时间： | 2015-03-20 |
Numerical Research of Impact Force on Aircraft Crash Upon the Concrete Target |
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| ZHANG Chao,OU Zhuo-cheng,WEN Li-jing,DUAN Zhuo-ping and HUANG Feng-lei. Numerical Research of Impact Force on Aircraft Crash Upon the Concrete Target[J]. Journal of Beijing Institute of Technology(Natural Science Edition), 2015, 35(S2): 209-212 |
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| Authors: | ZHANG Chao OU Zhuo-cheng WEN Li-jing DUAN Zhuo-ping HUANG Feng-lei |
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| Affiliation: | School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, China,School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, China,Ministry of Environmental Protection Nuclear and Radiation Safety Center, Beijing 100082, China,School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, China and School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | To improve the impact force equation of aircraft crashing upon the concrete target, it's supposed that there is a crushing region in front of aircraft when colliding. Using stress wave theory to analyze the formation mechanism of crushing region and calculate the interval length and using conservation of momentum principle to derive impact loading equation of aircraft with a crushing region. The calculation and derivation indicate that because of the existence of the crashing region, the length of the region and the velocity distribution determine the quality coefficient of impact force equation together. The coefficient range under different velocity distribution was calculated and the rationality of different coefficient range was analyzed. Through the above calculation and analysis, a new impact force equation of aircraft crashing upon the concrete target can be accurately given. |
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| Keywords: | impact dynamics stress wave crushing region velocity distribution |
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