EXPERIMENTATION AND FINITE-ELEMENT SIMULATION OF ADIABATIC SHEAR BANDS IN CONTROLLED PENETRATION IMPACT

被引：18

作者：

CHOU, PC

HASHEMI, J

CHOU, A

ROGERS, HC

机构：

[1] Drexel University, Philadelphia

来源：

INTERNATIONAL JOURNAL OF IMPACT ENGINEERING | 1991年 / 11卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0734-743X(91)90041-D

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Distinct shear bands were generated in a controlled-penetration impact experiment. The experimental set-up included a projectile, an indentor, a stopper, and a backup ring. Impact tests with steel specimens of different flow stresses showed that the shear band length is directly proportional to the flow stress and the indentation depth, and inversely proportional to the back-up hole diameter. A finite element computer code simulation showed that shear bands could be formed without initial disturbances or defects. The calculated shear band length was in good agreement with the experimentally measured ones.

引用

页码：305 / 321

页数：17

共 25 条

[1]

Rogers, Adiabatic plastic deformation, Annual Review of Materials Science, 9, pp. 283-311, (1979)

[2]

Dormeval, The adiabatic shear phenomenon, Materials at High Strain Rate, (1987)

[3]

Clifton, Plastic waves: theory and experiment, Mechanics Today, (1972)

[4]

Chou, Adiabatic shear band formation in 4140 alloy steel, M.Sc. Thesis, (1987)

[5]

Curran, Seaman, Shockey, Dynamic failure in solids, Physics Today, 30, (1977)

[6]

Recht, Catastrophic thermoplastic shear, Journal of Applied Mechanics, 18, pp. 189-193, (1964)

[7]

Marchand, Duffy, An experimental study of the formation process of adiabatic shear bands in a structural steel, Journal of the Mechanics and Physics of Solids, 36, (1987)

[8]

Nemat-Nasser, Dynamic deformation and fracture, Int. Conf. on High Strain Rate Phenomena in Materials, (1990)

[9]

Zener, Hollomon, Effect of strain rate upon plastic flow of steel, J. Appl. Phys., 15, pp. 22-32, (1944)

[10]

Stock, Wingrove, The energy required for high—speed shearing of steel, ARCHIVE: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23), 13, pp. 110-115, (1971)

← 1 2 3 →