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Compared to the traditional numerical methods, meshless SPH method is more suitable to simulate the hypervelocity impact in that it can simulate the material interface clearly and overcome the numerical instability due to the large mesh deformation in the Lagrange method. In SPH, in order to get the physical value of one nodal at time t, it is firstly required to find the neighboring nodes interacting with it, so the calculation speed is slower and the calculation time is longer than that of the FEM. This paper adopts the coupling method of SPH and Lagrange to simulate the 3D hypervelocity impact problem. The results show that the coupling method can save largely time while keep the accuracy approximately to that of SPH.

, authors=Yu-Yu WU, Yuan-Hang HE, Jin-Zhu LI, authorsList=Yu-Yu WU, Yuan-Hang HE, Jin-Zhu LI, authorCompany=null, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1323703413338419348, articleId=1323703412621193362, tenantId=1146029695717560320, journalId=1255847867265597444, language=CN, title=耦合方法在超高速碰撞数值模拟中的应用, columnId=1322942131614134466, journalTitle=高压物理学报, columnName=研究简报, runingTitle=null, highlight=null, articleAbstract=

相比于传统的数值方法,无网格光滑粒子法(SPH:Smoothed Particle Hydrodynamics)更适合模拟超高速碰撞问题,它能够清晰地模拟材料界面,并且能够克服中网格大变形导致的数值不稳定。然而在SPH方法中,为了得到t时刻一个节点上的物理量,需要先找出与它相互作用的临近节点,导致计算速度很慢,计算所需的时间远远大于有限元方法所需的时间。采用SPH与Lagrange法相耦合的方法对3D超高速碰撞过程进行了模拟研究。计算结果表明:SPH与Lagrange法耦合方法的计算结果与SPH计算结果精度接近,并且能够大大地节省计算时间。

, authors=武玉玉, 何远航, 李金柱, authorsList=武玉玉, 何远航, 李金柱, authorCompany=null, correspAuthors=null, authorNote=

武玉玉(1970—),女,硕士,主要研究方向为高速撞击动力学和流体力学. E-mail:

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武玉玉(1970—),女,硕士,主要研究方向为高速撞击动力学和流体力学. E-mail:

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武玉玉(1970—),女,硕士,主要研究方向为高速撞击动力学和流体力学. E-mail:

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耦合方法在超高速碰撞数值模拟中的应用
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武玉玉 , 何远航 , 李金柱
高压物理学报 | 研究简报 2005,19(4): 385-389
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高压物理学报 |研究简报 2005 , 19 (4) : 385 -389
耦合方法在超高速碰撞数值模拟中的应用
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武玉玉 , 何远航, 李金柱
作者信息
  • 北京理工大学爆炸科学与技术国家重点实验室,北京 100081
作者简介:

武玉玉(1970—),女,硕士,主要研究方向为高速撞击动力学和流体力学. E-mail:

Application of the Coupling Method inSimulating the Hypervelocity Impact
Yu-Yu WU , Yuan-Hang HE, Jin-Zhu LI
Affiliations
  • State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
出版时间: 2005-12-05
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相比于传统的数值方法,无网格光滑粒子法(SPH:Smoothed Particle Hydrodynamics)更适合模拟超高速碰撞问题,它能够清晰地模拟材料界面,并且能够克服中网格大变形导致的数值不稳定。然而在SPH方法中,为了得到t时刻一个节点上的物理量,需要先找出与它相互作用的临近节点,导致计算速度很慢,计算所需的时间远远大于有限元方法所需的时间。采用SPH与Lagrange法相耦合的方法对3D超高速碰撞过程进行了模拟研究。计算结果表明:SPH与Lagrange法耦合方法的计算结果与SPH计算结果精度接近,并且能够大大地节省计算时间。

SPH  /  耦合方法  /  数值模拟

Compared to the traditional numerical methods, meshless SPH method is more suitable to simulate the hypervelocity impact in that it can simulate the material interface clearly and overcome the numerical instability due to the large mesh deformation in the Lagrange method. In SPH, in order to get the physical value of one nodal at time t, it is firstly required to find the neighboring nodes interacting with it, so the calculation speed is slower and the calculation time is longer than that of the FEM. This paper adopts the coupling method of SPH and Lagrange to simulate the 3D hypervelocity impact problem. The results show that the coupling method can save largely time while keep the accuracy approximately to that of SPH.

SPH  /  coupling method  /  numerical simulation
武玉玉, 何远航, 李金柱. 耦合方法在超高速碰撞数值模拟中的应用. 高压物理学报, 2005 , 19 (4) : 385 -389 .
Yu-Yu WU, Yuan-Hang HE, Jin-Zhu LI. Application of the Coupling Method inSimulating the Hypervelocity Impact[J]. Chinese Journal of High Pressure Physics, 2005 , 19 (4) : 385 -389 .

参考文献 引证文献
排序方式:
[1]
Rabb R J, Fahrenthold E P. Numerical Simulation of the Oblique Impact on Orbital Debris Shielding[J]. Int J Impact Eng, 1999, 23(1): 735-744.
[2]
WAttary S, Heinstein M W, Swegle J W. Coupling of Smooth Particle Hydrodynamics with the Finite Element Method[J]. Nucl Eng Des, 1994, 150: 199-205.
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Johnson G R. Linking of Lagrangian Particle Methods to Standard Finite Element Methods for High Velocity Impact Computations[J]. Nucl Eng Des, 1994, 150: 263-274.
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Maiden C J, Gehring J W, McMillan A R. Investigation of Fundamental Mechanism of Damage to Thin Targets by Hypervelocity Projectiles[R]. Santa Barbara: General Motors Defense Research Laboratory, GM-DRL-TR-63-225, 1963.
2005年第19卷第4期
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  • 接收时间:2004-09-09
  • 首发时间:2026-11-01
  • 出版时间:2005-12-05
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  • 收稿日期:2004-09-09
  • 修回日期:2004-12-13
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    北京理工大学爆炸科学与技术国家重点实验室,北京 100081
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
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