基于速度势侵彻模型的应用研究

王政; 倪玉山; 曹菊珍; 张文; 金吾根

doi:10.11858/gywlxb.2005.01.003

基于速度势侵彻模型的应用研究

doi: 10.11858/gywlxb.2005.01.003

1.
复旦大学力学与工程科学系，上海 200433；
2.
北京应用物理与计算数学研究所，北京 100088

详细信息

通讯作者:
王政

计量
- 文章访问数: 7592
- HTML全文浏览量: 245
- PDF下载量: 717
出版历程
- 收稿日期: 2004-02-02
- 修回日期: 2004-05-09
- 发布日期: 2005-03-05

Application of the Velocity Potential Model to Penetration Study

1.
Department of Mechanics and Engineering Science, Fudan University, Shanghai 200433, China;
2.
Institute of Applied Physics and Computational Mathematics, Beijing 100088, China

More Information

Corresponding author: WANG Zheng

摘要

摘要: 研究了Rubin等人提出的基于Rankine卵形体速度势函数分析的侵彻模型。根据该侵彻模型的基本方法编制了计算程序，计算头部形状为锥形、卵形和球形的长杆弹体垂直碰撞靶板时的侵彻深度和穿透靶板后的剩余速度，分析侵彻模型对不同头部形状的长杆弹体的适用性。另外，利用该分析方法计算并分析了卵形头部长杆弹体对铝靶侵彻和穿透的缩比模型问题，用分析方法验证了无量纲侵彻深度和剩余速度相等的侵彻几何相似规律，同时得到了弹体减加速度与几何尺寸成反比的重要结论。最后对混凝土靶板的侵彻与穿透问题进行了尝试计算，得到了同实验基本一致的计算结果并对其进行了深入分析。
- 应用力学 /
- 侵彻 /
- 穿透 /
- 速度势
Abstract: With the application of Rubin's penetration theory and the velocity potential model, some new results of penetration problem are presented in this paper. A code according to this model was written to calculate penetration problems of long rod projectile with conical-nose, ogive-nose and spherical nose. The results of penetration depths and residual velocity were compared with the experimental data to analysis the adaptability of the model to varied kinds of noses. The comparison showed that the results given by the theoretical penetration model are in good agreement with the experiments for ogive-nose rod projectile. Then we used the theoretical penetration model to study the scaling penetration problems of ogive-nose projectile impacting on aluminum targets. The calculated results testified the conclusion that the normalized penetration depths and residual velocity are equal. Meanwhile we drew an important conclusion that the deceleration of the projectile are inverse proportion to the size. Finally, using the theoretical model, we made a trial to calculate penetration problems of the concrete targets, presented some results consistent with the experiments, and gave a delicate analysis.
- applied mechanics /
- penetration /
- perforation /
- velocity potential

HTML全文

参考文献(12)

Luk V K, Amos D E. Dynamic Cylindrical Cavity Expansion of Compressible Strain-Hardening Materials [J]. J Appl Mech, 1991, 58: 334-340.

Forrestal M J, Tzoud D Y, Longcope D B. Penetration into Ductile Metal Ttargets with Rigid Spherical-Nose Rods [J]. Int J Impact Eng, 1995, 16(5): 699-710.

Forrestal M J, Tzoud D Y. A Spherical Cavity-Expansion Penetration Model for Concrete Targets [J]. Int J Solids Struct, 1997, 34(31-32): 4127-4146.

Tate A. Long Rod Penetration Models-Part Ⅰ: A Flow Field Model for High Speed Long Rod Penetration [J]. Int J Eng Sci, 1986, 28: 535-548.

Tate A. Long Rod Penetration Models-Part Ⅱ: Extensions to the Hydrodynamic Theory of Penetration [J]. Int J Eng Sci, 1986, 28: 599-612.

Yarin A L, Rubin M B, Roisman I V. Penetration of a Rigid Projectile into an Elastic-Plastic Target of Finite Thickness [J]. Int J Impact Eng, 1995, 16: 801-831.

Yossifon G, Rubin M B, Yarin A L. Penetration of a Rigid Projectile into a Finite Thickness Elastic-Plastic Target-Comparison between Theory and Numerical Computations [J]. Int J Impact Eng, 2001, 25: 265-290.

Piekutowski A J, Forrestal M J, Poormon K L, et al. Perforation of Aluminum Plates with Ogive-Nose Steel Rods at Normal and Oblique Impacts [J]. Int J Impact Eng, 1996, 18: 877-887.

Forrestal M J, Okajima K, Luk V K. Penetration of 6061-T651 Aluminum Targets with Rigid Long Rods [J]. J Appl Mech, 1988, 55: 755-760.

Hanchak S J, Forrestal M J. Perforation of Cocnrete Slabs with 48 MPa(7 ksi) and 140 MPa(20 ksi) Unconfined Compressive Strengths [J]. Int J Impact Eng, 1992, 12: 1-7.

Forrestal M J, Frew D J. Penetration of Grout and Concrete Targets with Ogive-Nose Steel Projectiles [J]. Int J Impact Eng, 1996, 18: 465-476.

Malvern L E, Jenkins D A, Tang T, et al. Dynamic Compressive Testing of Concrete [A]. Proceedings of Second Symposium on the Interaction of Non-Nuclear Munitions with Structures [C]. Florida: US Dept of Defense, 1985. 194-199.

施引文献

资源附件(0)

访问统计