Fast algorithm for simulation of normal and oblique penetration into limestone targets

doi:10.1007/s10483-017-2193-7

Applied Mathematics and Mechanics (English Edition) ›› 2017, Vol. 38 ›› Issue (5): 671-688.doi: https://doi.org/10.1007/s10483-017-2193-7

Fast algorithm for simulation of normal and oblique penetration into limestone targets

Xuguang CHEN, Duo ZHANG, Shujian YAO, Fangyun LU

College of Science, National University of Defense Technology, Changsha 410073, China

收稿日期:2016-07-16 修回日期:2016-09-05 出版日期:2017-05-01 发布日期:2017-05-01
通讯作者: Duo ZHANG E-mail:duo.w.zhang@gmail.com
基金资助:
Project supported by the National Natural Science Foundation of China (No. 11202236)

Fast algorithm for simulation of normal and oblique penetration into limestone targets

Xuguang CHEN, Duo ZHANG, Shujian YAO, Fangyun LU

College of Science, National University of Defense Technology, Changsha 410073, China

Received:2016-07-16 Revised:2016-09-05 Online:2017-05-01 Published:2017-05-01
Contact: Duo ZHANG E-mail:duo.w.zhang@gmail.com
Supported by:
Project supported by the National Natural Science Foundation of China (No. 11202236)

摘要/Abstract

摘要：

A fast algorithm is proposed to predict penetration trajectory in simulation of normal and oblique penetration of a rigid steel projectile into a limestone target. The algorithm is designed based on the idea of isolation between the projectile and the target. Corresponding factors of influence are considered, including analytical load model, cratering effect, free surface effect, and separation-reattachment phenomenon. Besides, a method of cavity ring is used to study the process of cavity expansion. Further, description of the projectile's three-dimensional gesture is presented. As a result, the algorithm is coded for fast calculation, named PENE3D. A series of cases with selected normal and oblique penetrations are simulated by the algorithm. The predictions agree with the results of tests, showing that the proposed algorithm is fast and effective in simulation of the penetration process and prediction of the penetration trajectory.

关键词: quadratic system, divergence, critical point, isolation between projectile and target, fast algorithm, analytical loading model, limestone target, ogive-nosed projectile

Abstract:

Key words: quadratic system, divergence, critical point, ogive-nosed projectile, fast algorithm, isolation between projectile and target, analytical loading model, limestone target

中图分类号:

O385

Xuguang CHEN, Duo ZHANG, Shujian YAO, Fangyun LU. Fast algorithm for simulation of normal and oblique penetration into limestone targets[J]. Applied Mathematics and Mechanics (English Edition), 2017, 38(5): 671-688.

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Fast algorithm for simulation of normal and oblique penetration into limestone targets

Fast algorithm for simulation of normal and oblique penetration into limestone targets

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