|
|
金属材料在高应变率下的热粘塑性本构模型
A thermo-viscoplastic constitutive model of metallic materials at high strain rates
查看参考文献8篇
|
文摘
|
提出了一种考虑应变强化、应变率强化、热软化效应及材料损伤的本构模型,通过在Johnson-Cook热粘塑性本构关系中增加一个随应变增大应力减速小的软化项,反映材料的损伤.该模型可以很好地预测材料的整个变形过程,同时提供了一个确定软化项系数的简单方法. |
|
其他语种文摘
|
A constitutive model considering the effects of strain hardening, strain rate hardening, thermal softening, and material damage was suggested. In order to take the effect of material damage into account, a strain softening term was added in Johnson-Cook flow stress law. The model can predict the overall deformation process of metallic materials at high strain rates. A simple way was provided to determine the coefficients of softening term. |
|
来源
|
弹道学报
,2004,16(4):18-22 【扩展库】
|
|
关键词
|
热粘塑性
;
本构模型
;
高应变率
;
损伤
|
|
地址
|
中科院金属所, 材料科学国家实验室, 沈阳, 110016
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1004-499X |
|
学科
|
武器工业 |
|
基金
|
国家自然科学基金
;
山西省自然科学基金
|
|
文献收藏号
|
CSCD:1672883
|
参考文献 共
8
共1页
|
|
1.
李国琛. 塑性大应变微结构力学[M].
塑性大应变微结构力学,1993
|
CSCD被引
9
次
|
|
|
|
|
2.
Bai Y L. Thermoplastic instability in simple shear[J].
J Mech Phys Solids,1982,30:195-207
|
CSCD被引
26
次
|
|
|
|
|
3.
Johnson G R. A constitutive model and data for metals subjected to large strain rates and high temperatures[A].
Proceedings of the Seventh International Ballistics Symposium,1983:541-547
|
CSCD被引
4
次
|
|
|
|
|
4.
Zhu Z G. Shear band development in a thermally softening viscoplastic body[J].
Comput Struct,1991,39:459-472
|
CSCD被引
1
次
|
|
|
|
|
5.
Marchand A. An experimental study of the formation process of adiabatic shear bands in a structural steel.
An experimental study of the formation process of adiabatic shear bands in a structural steel
|
CSCD被引
1
次
|
|
|
|
|
6.
Yadav S. The mechaniocalproperties of tungsten–based composites at very high strain rates[J].
Materials Science and Engineering. A,1995,203:140-153
|
CSCD被引
11
次
|
|
|
|
|
7.
Duan Z Q. Microstructures and adiabatic shear bands formed by ballistic impact in steels and tungsten alloy.
Fat Fract Struc Eng Mter,2003,26:1119-1126
|
CSCD被引
5
次
|
|
|
|
|
8.
李金泉. 高速侵彻装甲钢绝热剪切带特性研究.
弹道学报,2003,15(3):86-91
|
CSCD被引
3
次
|
|
|
|
|
|
了解气象卫星更多信息，请访问