Comparison and Validation of Smooth Particle Hydrodynamic (SPH) and Coupled Euler Lagrange (CEL) Techniques for Modeling Hydrodynamic Ram
Comparison and Validation of Smooth Particle Hydrodynamic (SPH) and Coupled Euler Lagrange (CEL) Techniques for Modeling Hydrodynamic Ram
复制标题
DOI：
10.2514/6.2005-2331
复制
发表时间：
2005-04
期刊：
影响因子：
--
通讯作者：
Chad E. Sparks;R. Hinrichsen;D. Friedmann;F. Eustis
中科院分区：
文献类型：
--
作者：
Chad E. Sparks;R. Hinrichsen;D. Friedmann;F. Eustis
本文介绍了（1）预测流体动力冲压（HRAM）引起的结构损伤的计算技术的发展概况和简要历史，（2）简要描述了光滑粒子流体动力学（SPH）技术，（3）简要描述了耦合欧拉拉格朗日（CEL）技术，（4）描述了一种用于检测12.7mm射弹进入充水容器所产生的HRAM载荷的测试夹具和程序;（5）SPH和CEL技术在模拟流体-结构相互作用中的应用和比较;并与实验数据进行比较。作者利用LS-DYNA®代码的功能对HRAM效应进行建模。本文将提出的模拟技术与实验数据的压力-时间的历史，速度退化的弹丸，以及高速摄影的实际事件的比较。
‡This paper presents (1) an overview and brief history of the evolution of computational techniques to predict structural damage resulting from hydrodynamic ram (HRAM), (2) a brief description of the smoothed particle hydrodynamics (SPH) technique, (3) a brief description of the Coupled Euler Lagrange (CEL) technique, (4) a description of a test fixture and program to examine the HRAM loads generated by a 12.7mm projectile entering a water-filled container, (5) applications and comparisons of SPH and CEL techniques for modeling fluid structure interactions, and comparisons with experimental data. The authors have exploited the capabilities of the LS-DYNA® code to model HRAM effects. This paper will present comparisons of the simulation techniques with experimental data in terms of pressure-time histories, velocity degradation of the projectile, as well as high speed photography of the actual events.