炸药条加载圆柱壳的数值模拟（Ⅱ）：解耦分析与实验验证

毛勇建; 李玉龙; 陈颖; 邓宏见; 黄海莹; 周擎; 黄含军

doi:10.11858/gywlxb.2013.01.011

炸药条加载圆柱壳的数值模拟（Ⅱ）：解耦分析与实验验证

doi: 10.11858/gywlxb.2013.01.011

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:
毛勇建 E-mail:liyulong@nwpu.edu.cn

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出版历程
- 收稿日期: 2011-05-27
- 修回日期: 2011-11-14
- 发布日期: 2013-02-15

Numerical Simulation of Cylindrical Shell Loaded by Explosive Rods (Ⅱ): Decoupling Analysis and Experimental Validation

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

摘要

摘要: 根据已报道的二维流固耦合数值模拟结果，建立了经缓冲橡胶整形后的单炸药条载荷模型。将炸药条载荷叠加后直接施加在圆柱壳表面，进行二维解耦模拟，得到了与流固耦合模拟基本吻合的应力结果。在此基础上，对19条炸药条加载265 mm380 mm圆柱壳进行了三维解耦模拟，并采用相同状态的实验予以验证。结果表明，特征点应变响应吻合较好，验证了炸药条加载圆柱壳解耦数值模拟的有效性，为大量工况数值分析、提高建模和计算效率奠定了基础。
- 圆柱壳 /
- X射线 /
- 炸药 /
- 结构响应 /
- 解耦
Abstract: According to the previous simulation results of two-dimensional fluid-structure interaction, the model of impulsive load generated by a single explosive rod and shaped by the buffer is built. Then the loads generated by multiple explosive rods are superposed and applied on the surface of the cylindrical shell, and a two-dimensional decoupled simulation is performed. The results basically agree with those of the fluid-structure interaction simulation. Based on that, a three-dimensional decoupled simulation of the 265 mm380 mm cylindrical shell loaded by 19 explosive rods is accomplished. Meanwhile, the corresponding test is performed. There shows a good agreement between the three-dimensional numerical and tested strain histories at typical locations. These results prove the effectiveness of decoupled numerical simulation and provide a foundation for improving the modeling and computational efficiency in performing a large number of numerical simulations.
- cylindrical shell /
- X-ray /
- explosive /
- structural response /
- decoupling

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参考文献(18)

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