Effective shear modulus in shock-compressed aluminum

被引：6

作者：

Yu Yu-Ying ^{[1
]}

Tan Hua ^{[1
]}

Hu Jian-Bo ^{[1
]}

Dai Cheng-Da ^{[1
]}

Chen Da-Nian ^{[2
]}

Wang Huan-Ran ^{[2
]}

机构：

[1] China Acad Engn Phys, Inst Fluid Phys, Key Lab Nat Def Sci & Technol Shock Wave & Detona, Mianyang 621900, Peoples R China

[2] Ningbo Univ, Ctr Mech & Mat Sci Res, Ningbo 315211, Zhejiang, Peoples R China

来源：

ACTA PHYSICA SINICA | 2008年 / 57卷 / 04期

关键词：

effective shear modulus; sound velocity; quasi-elastic release; shock wave; aluminum;

D O I：

10.7498/aps.57.2352

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A method to determine the effective shear modulus under shock loading conditions by using longitudinal and bulk sound velocities along the quasi-elastic release was introduced in present paper. The effective shear modulus was calculated for LY12 aluminum over shock pressures range of 20-70 GPa. Results show that the effective shear modulus decreases linearly with the stress, reaching to zero at the reverse yield point, and the effective shear modulus at first release can be depicted by the modified Steinberg-Cochran-Guinan model. Using the effective shear modulus data, simulation has been successful in reproducing the experimental data with quasi-elastic release behavior, showing smooth transition from elastic wave to fully plastic wave.

引用

页码：2352 / 2357

页数：6

共 17 条

[1] Asay J. R., 1981, SHOCK WAVES HIGH STR, P417
[2] COCHRAN SG, 1976, 17105 UCID LAWR LIV
[3] Time-resolved particle velocity measurements at impact velocities of 10 km/s
Furnish, MD
Chhabildas, LC
Reinhart, WD
[J]. INTERNATIONAL JOURNAL OF IMPACT ENGINEERING, 1999, 23 (01) : 261 - 270
[4] GRAY GT, 1992, HIGH PRESSURE SHOCK, P206
[5] Hu JB, 2006, CHINESE PHYS LETT, V23, P1265, DOI 10.1088/0256-307X/23/5/055
[6] Constitutive study for tungsten alloy under high pressure
Hua, JS
Jing, FQ
Dong, YB
Tan, H
Shen, ZY
Zhou, XM
Hu, SL
[J]. ACTA PHYSICA SINICA, 2003, 52 (08) : 2005 - 2009
[7] Compressive strength measurements in aluminum for shock compression over the stress range of 4-22 GPa
Huang, H
Asay, JR
[J]. JOURNAL OF APPLIED PHYSICS, 2005, 98 (03)
[8] QUASI-ELASTIC RELEASE IN SHOCK-COMPRESSED SOLIDS
JOHNSON, JN
HIXSON, RS
GRAY, GT
MORRIS, CE
[J]. JOURNAL OF APPLIED PHYSICS, 1992, 72 (02) : 429 - 441
[9] MEYERS MA, 1994, DYNAMIC BEHAV MAT, P386
[10] Moss W. C., 1984, Shock Waves in Condensed Matter - 1983. Proceedings of the American Physical Society Topical Conference, P133

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