| 考虑应变率效应的结构响应相似律的研究 |
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| 引用本文： | 徐坤,皮爱国,刘坚成,刘源,刘志林,黄风雷.考虑应变率效应的结构响应相似律的研究[J].北京理工大学学报,2018,38(S2):105-108. |
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| 作者姓名： | 徐坤 皮爱国 刘坚成 刘源 刘志林 黄风雷 |
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| 作者单位： | 北京航天长征飞行器研究所, 北京 100076,北京理工大学 爆炸科学与技术国家重点实验室, 北京 100081,北京航天长征飞行器研究所, 北京 100076,北京理工大学 爆炸科学与技术国家重点实验室, 北京 100081,北京航天长征飞行器研究所, 北京 100076,北京理工大学 爆炸科学与技术国家重点实验室, 北京 100081 |
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| 摘 要： | 基于量纲分析方法，讨论了冲击载荷条件下应变率效应对结构响应相似律的影响，提出速度修正方法来缩小由于应变率效应而导致的变形不相似现象.进行反弹道Taylor碰撞模型试验和原型试验，利用速度修正方法指导反弹道Taylor碰撞修正模型试验，并与原型和模型试验结果进行对比.结果表明，本文方法可有效改善材料应变率效应所致的原型试验与模型试验之间的结构响应差异.
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| 关 键 词： | 结构响应 应变率效应 相似律 |
| 收稿时间： | 2018/12/1 0:00:00 |
Analysis of Influence of Strain Rate Effects on Similarity Law of Structural Response |
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| XU Kun,PI Ai-guo,LIU Jian-cheng,LIU Yuan,LIU Zhi-lin and HUANG Feng-lei.Analysis of Influence of Strain Rate Effects on Similarity Law of Structural Response[J].Journal of Beijing Institute of Technology(Natural Science Edition),2018,38(S2):105-108. |
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| Authors: | XU Kun PI Ai-guo LIU Jian-cheng LIU Yuan LIU Zhi-lin and HUANG Feng-lei |
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| Institution: | Beijing Institute of Space Long March Vehicle, Beijing 100076, China,State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China,Beijing Institute of Space Long March Vehicle, Beijing 100076, China,State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China,Beijing Institute of Space Long March Vehicle, Beijing 100076, China and State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | Based on the dimensional analysis method, the influence of strain rate effects on the similarity law of structural response under impact load is analyzed. A velocity correction method is provided to decrease the deformation difference due to strain rate effects. The reverse ballistic Taylor impact prototype experiment and model experiment are performed. The velocity correction method is used to guide the reverse ballistic Taylor impact correction model experiment, and the results are compared with the results of prototype experiment and model experiment. The result shows that the velocity correction method can effectively decrease the structure response between prototype and model due to strain rate effects. |
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| Keywords: | structural response strain rate effects similarity law |
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