非理想炸药水下爆炸载荷传输特性对气背板结构响应的不确定度研究
作者:柳剑1, 于文泽2, 安丰江1, 吴成1, 李旭1, 代立辉1 作者单位:1. 北京理工大学机电学院, 北京 100081;
2. 北京空间技术研制中心, 北京 100094 发布时间:2018-10-29 15:51:19 点击数:301

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关键词:非理想炸药;水下爆炸;不确定度;冲击波峰值压力;时间衰减常数;气背板
摘要:

为准确评估非理想炸药水下爆炸载荷传输过程中不确定度对舰船结构的毁伤效果的影响程度,该文采用误差分析理论推导出非理想炸药水下爆炸载荷中峰值压力和时间衰减常数的不确定度对气背板结构初期响应的影响规律。结合理想炸药与非理想炸药水下爆炸试验数据,研究结果表明:非理想炸药水下爆炸冲击波峰值压力和时间衰减常数的不确定度明显高于理想炸药的载荷不确定度,并且能够对0.01 m厚度的气背钢板结构初期响应产生7%~9%的相对不确定度,在评估非理想炸药水下爆炸对舰船结构毁伤效果时值得注意。

Study on uncertainty of underwater explosion load transfer characteristics of non-ideal explosives to air-back plate structural response

LIU Jian1, YU Wenze2, AN Fengjiang1, WU Cheng1, LI Xu1, DAI Lihui1

1. School of Mechanical and Electrical Engineering, Beijing Institute of Technology, Beijing 100081, China;
2. Institute of Manned Space Engineering, Beijing 100094, China

Abstract: In order to accurately assess the degree of influence of the uncertainty of the transmission of the underwater blast load of non-ideal explosives on the damage effect of the ship structure, the influence of uncertainty of peak pressure and time decay constant on the initial response of air-back plate structure under the underwater explosion load of non-ideal explosive is derived by using error analysis theory. Combining the underwater explosion test data of ideal explosives and non-ideal explosives, the results show that the uncertainty of the peak pressure and time decay constants of the underwater explosion shock wave of non-ideal explosives is significantly higher than these of the ideal explosives. The uncertainty of non-ideal explosive load can produce the relative uncertainty of 7%-9% of the initial response of air-back steel plate structure with a thickness of 0.01 m, which is worth noting when assessing the effects of underwater blasting of non-ideal explosives on the damage of ship structures.

Keywords: non-ideal explosives;underwater explosion;uncertainty;peak shock pressure;time decay constants;air-back plate

2018, 1900-02-12(10): 31-34  收稿日期: 2018-04-27;收到修改稿日期: 2018-05-28

基金项目: 

作者简介: 柳剑(1996-),男,辽宁葫芦岛市人,硕士研究生,专业方向为水下爆炸与防护

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