炸药条加载圆柱壳的数值模拟(Ⅲ)：对X射线力学效应的模拟等效性分析

毛勇建; 李玉龙; 陈颖; 黄含军; 王军评

doi:10.11858/gywlxb.2013.05.009

炸药条加载圆柱壳的数值模拟(Ⅲ)：对X射线力学效应的模拟等效性分析

doi: 10.11858/gywlxb.2013.05.009

1.
中国工程物理研究院总体工程研究所，四川绵阳 621900；
2.
西北工业大学航空学院，陕西西安 710072

详细信息

通讯作者:
李玉龙 E-mail:liyulong@nwpu.edu.cn

计量
- 文章访问数: 6587
- HTML全文浏览量: 292
- PDF下载量: 364
出版历程
- 收稿日期: 2011-11-19
- 修回日期: 2012-01-02
- 发布日期: 2013-10-15

Numerical Simulation of Loading Cylindrical Shell by Explosive Rods (Ⅲ): Fidelity for Simulating X-Ray Mechanical Effects

1.
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang 621900, China;
2.
School of Aeronautics, Northwestern Polytechnical University, Xi′an 710072, China

摘要

摘要: 利用建立的解耦分析技术，结合旋转叠加法对炸药条加载圆柱壳的试验进行了大量工况的数值模拟。定义3个特征点环向应变的平均差异作为评价等效性的指标，发现了炸药条数量与壳体半径之比n/r对平均应变差异的控制作用，得到了正常（理想）、少量炸药条熄爆、考虑炸药条位置误差以及起爆不同步4种情况下平均应变差异随n/r的变化关系。数值试验结果为炸药条加载试验设计与结果评估提供了指导。
- X射线 /
- 圆柱壳 /
- 炸药条 /
- 结构响应 /
- 旋转叠加法 /
- 等效性
Abstract: According to the prior uncoupling analysis and utilizing the Rotation-Superposition Method, a large number of numerical experiments for loading cylindrical shells by explosive rods were performed. The average strain difference at three typical locations was defined as the index for evaluating the test simulation fidelity. It was found that the index mainly relies on the ratio of the rods number to the shell radius, i.e. n/r. The relations between the average strain difference and n/r under four conditions, i.e. the normal (ideal) condition, considering incomplete initiations, explosive rod distribution error and non-simultaneous initiations, were obtained. The investigation provides guidelines for the test design and results evaluation.
- X-ray /
- cylindrical shell /
- explosive rod /
- structural response /
- rotation-superposition method /
- fidelity

HTML全文

参考文献(16)

Mao Y J, Li Y L, Chen Y, et al. Numerical simulation of loading cylindrical shell by explosive rods (Ⅰ): Fluid-structure interaction simulation [J]. Chinese Journal of High Pressure Physics, 2012, 26(2): 155-162. ( in Chinese)

毛勇建, 李玉龙, 陈颖, 等. 炸药条加载圆柱壳的数值模拟(Ⅰ): 流固耦合模拟 [J]. 高压物理学报, 2012, 26(2): 155-162.

Mao Y J, Li Y L, Chen Y, et al. Numerical simulation of loading cylindrical shell by explosive rods (Ⅱ): Decoupling analysis and experimental validation [J]. Chinese Journal of High Pressure Physics, 2013, 27(1): 76-82. ( in Chinese) 毛勇建, 李玉龙, 陈颖, 等. 炸药条加载圆柱壳的数值模拟(Ⅱ): 解耦分析与试验验证 [J]. 高压物理学报, 2013, 27(1): 76-82.

Rivera W G, Benham R A, Duggins B D, et al. Explosive technique for impulse loading of space structures, SAND-99-3175C [R]. Albuquerque, NM, USA: Sandia National Laboratories, 1999.

He M H, Liu D C, Nie J X. Transient dynamic response analysis of a thin-walled conical shell [J]. Journal of Vibration and Shock, 2006, 25(6): 157-161. (in Chinese)

何明辉, 刘得成, 聂景旭. 圆锥薄壳体瞬态动力响应分析 [J]. 振动与冲击, 2006, 25(6): 157-161.

Cai C Z, Chen H. Dynamic response analysis of conical shell under high impulse load [J]. Missiles and Space Vehicles, 2007(4): 52-53. (in Chinese)

蔡成钟, 陈浩. 截锥壳在强脉冲载荷作用下的动响应分析 [J]. 导弹与航天运载技术, 2007(4): 52-53.

Deng H J, Xiao H W, He R J. Structural response of cylindrical shells subjected to external impulsive loads applied with slice explosive [C]//Proceedings of the 8th National Conference of Explosion Mechanics. Jian, 2007: 206-212. (in Chinese)

邓宏见, 肖宏伟, 何荣建. 片炸药爆炸加载下壳体结构响应研究 [C]//第八届全国爆炸力学学术会议论文集. 吉安, 2007: 206-212.

Mao Y J, Li Y L, Deng H J, et al. A quick method for analyzing dynamic responses of axisymmetric structures under lateral impulsive loadings [J]. Chinese Journal of Computational Mechanics, 2010, 27(3): 563-568. (in Chinese)

毛勇建, 李玉龙, 邓宏见, 等. 求解轴对称结构侧向冲击响应的一种快速算法 [J]. 计算力学学报, 2010, 27(3): 563-568.

Mao Y J, Li Y L, Huang H J, et al. A quick method for solving responses of axisymmetric structures subjected to loads of rotational similarity: Rotation-superposition method and its application [J]. Chinese Journal of Solid Mechanics, 2011, 32(3): 306-312. (in Chinese)

毛勇建, 李玉龙, 黄含军, 等. 旋转相似载荷下轴对称结构弹性响应的快速算法: 旋转叠加法及其应用 [J]. 固体力学学报, 2011, 32(3): 306-312.

Mao Y J, Li Y L, Huang H J. A simplified method for distribution design of explosive rods to simulate cosine-distributed impulse on cylindrical/conical shell [J]. Advanced Materials Research, 2010, 108-111: 1039-1042.

Benham R A, Bickes R W, Grubelich M C, et al. LDRD summary report. Part 1: Initiation studies of thin film explosvies used for scabbling concrete. Part 2: Investigation of spray techniques for use in explosive scabbling of concrete, SAND-96-2470UC-742 [R]. Albuquerque, NM, USA: Sandia National Labs, 1996.

施引文献

资源附件(0)

访问统计