针对目标靶典型结构在鱼雷撞击作用下的损伤变形及撞击过程中的动态响应设计并进行试验研究,首先利用非线性有限元仿真对2种试验工况进行预测,后续开展试验,对靶板变形模式及撞头加速度响应进行研究。结果表明,随撞击速度增加,靶板变形程度增大,加速度响应更剧烈,随靶板厚度增加,靶板变形程度减弱,加速度响应更剧烈。对比研究仿真与试验所得结果,结果表明,仿真结果与试验结果吻合程度较好,所采用的数值仿真方法能够对鱼雷撞击目标靶时结构动态响应进行准确预报。
The target typical structure damage deformation and dynamic response during the process of torpedo impacting was studied experimentally, firstly, the two impacting condition was predicted by FEM numerical simulation, then, the effects of impact parameters on results was studied experimentally. The result show that the faster of the striker, the target deformation is more obvious, and acceleration response is more rapid. The thicker of target thickness, the target deformation is weakened, and acceleration response is also more rapid. And the results of two methods were compared, the result show that the result based on test and numerical simulation are well matched, the numerical simulation method in the paper can predict the dynamic response during the torpedo impacting the target.
2019,41(4): 148-153 收稿日期:2019-01-27
DOI:10.3404/j.issn.1672-7649.2019.04.029
分类号:TJ630.3;TB122
作者简介:李静肖(1994-),男,硕士研究生,研究方向为鱼雷总体技术
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