反弹道斜撞击下自由梁结构响应研究

doi:10.3969/j.issn.1000-1093.2017.11.006

兵工学报 ›› 2017, Vol. 38 ›› Issue (11): 2117-2125.doi: 10.3969/j.issn.1000-1093.2017.11.006

反弹道斜撞击下自由梁结构响应研究

刘坚成^1,2，皮爱国¹，黄风雷¹

（1.北京理工大学爆炸科学与技术国家重点实验室，北京 100081； 2.北京航天长征飞行器研究所，北京 100076）

收稿日期:2017-01-12 修回日期:2017-01-12 上线日期:2018-01-03
通讯作者: 皮爱国（1977—），男, 副教授，硕士生导师 E-mail:aiguo_pi@bit.edu.cn
作者简介:刘坚成（1989—），男，博士。E-mail：liujc@bit.edu.cn
基金资助:
国家自然科学基金项目（11202029、11390362、11572048）

Structural Response of Free-free Beam under Oblique Reverse Ballistic Impact

LIU Jian-cheng^1,2, PI Ai-guo¹, HUANG Feng-lei¹

(1.State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081， China;2.Beijing Institute of Space Long March Vehicle, Beijing 100076, China)

Received:2017-01-12 Revised:2017-01-12 Online:2018-01-03

摘要/Abstract

摘要： 反弹道撞击实验在材料与结构动力学响应研究领域中已有广泛应用，相比正向撞击实验，反弹道实验可在自由梁上加装测量装置，得到更精确的测试结果。开展了自由梁20°斜撞击的反弹道实验，使用数字图像相关方法测试了弹体的实时动态响应情况，引入失效判据，并结合数值模拟分析，求解了轴向与横向载荷交互作用下的自由梁弯曲形貌。结果表明：考虑轴向力的计算结果与实验吻合较好，且优于文献［4］给出的自由梁计算模型；当质量比m_γ≥10时，正反弹道具有较好的等效性，该方法亦可用于求解弹体在非正侵彻过程中的结构响应。

关键词: 爆炸力学, 自由梁, 弯曲响应, 斜撞击, 反弹道, 数字图像相关方法

Abstract: Reverse ballistic impact test has been widely used to research the materials and structural dynamic response, in which the measuring devices can be installed on the free-free beam to obtain the more accurate measured results. The 20° reverse ballistic oblique impact tests of free-free beam are carried out, and the digital image correlation (DIC) technique is used to measure the real-time dynamic response. The failure criterion is introduced and the simulated results are considered to solve the dynamic responses of free-free beam under axial and transverse impact loading. The results show that the calcula-ted bending shape agrees well with the experimental result, and is better than that in Ref［4］. The reverse ballistics is equivalent to the forward ballistics for the reverse ballistic mass ratio m_γ≥10. The proposed method can also be used for solving the dynamic response of projectile during penetration. Key

Key words: explosionmechanics, free-freebeam, bendingresponse, obliqueimpact, reverseballistics, digitalimagecorrelationmethod

中图分类号:

O385

刘坚成，皮爱国，黄风雷. 反弹道斜撞击下自由梁结构响应研究[J]. 兵工学报, 2017, 38(11): 2117-2125.

LIU Jian-cheng, PI Ai-guo, HUANG Feng-lei. Structural Response of Free-free Beam under Oblique Reverse Ballistic Impact[J]. Acta Armamentarii, 2017, 38(11): 2117-2125.

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反弹道斜撞击下自由梁结构响应研究

Structural Response of Free-free Beam under Oblique Reverse Ballistic Impact

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