| 水中兵器空投入水冲击仿真分析 |
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| 作者姓名： | 张臣 奚慧巍 |
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| 作者单位： | 中国人民解放军 91439. 部队,辽宁 大连 116041 |
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| 摘 要： | 水中兵器空投入水瞬间,在强大的水流冲击作用下,弹体结构会承受较大载荷。首先采用近似理论分析了弹体垂直入水时的最大载荷,然后采用LS-DYNA对弹体空投入水过程进行了模拟仿真分析,包括垂直入水和倾斜入水。计算结果显示:仿真分析能很好地模拟弹体入水冲击过程,有较高的准确度,相比于近似理论分析,模拟仿真可用于各种头型弹体入水冲击计算,以及各种姿态的入水动态变化过程模拟分析,具有更广的应用范围。
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| 关 键 词： | 空投 入水冲击 仿真分析 |
Simulation Analysis of Water-entry Impact of Air-laid Underwater Weapon |
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| Authors: | Zhang Chen Xi Huiwei |
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| Affiliation: | Unit No. 9143 9. of PLA, Dalian 1 16041 , China |
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| Abstract: | At the point of the underwater weapon enteriny into water from the air, under the strong fluid impact, the elasticstructure will bear larger load. First, this paper analyzes the largest load when weapon vertically enters into water in the applicationof the approximate theory, and then makes simulation analysis of water-entry process of air-laid weapon using the LS-DYNA, inclu-ding vertical water-entry and oblique water-entry. The computation results show that simulation analysis can simulate water-entry im-pact process of weapon with high accuracy , and comparing to the approximate theory analysis , simulation has lager application rangein water-entry impact calculation of various head-shaped weapons and simulation analysis of water-entry dynamic changing processof various attitudes. |
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