Numerical simulation on the deformation behaviors of bulk metallic glass composites under uniaxial tension and compression
Numerical simulation on the deformation behaviors of bulk metallic glass composites under uniaxial tension and compression
复制标题
大块金属玻璃复合材料单轴拉伸和压缩变形行为的数值模拟
DOI：
10.1016/j.compstruct.2017.12.070
复制
发表时间：
2018-03
影响因子：
6.3
通讯作者：
Peter K. Liaw
中科院分区：
文献类型：
--
作者：
Wei Rao;Juan Zhang;Guozheng Kang;Peter K. Liaw
首先对自由体积模型进行扩展，使其能够描述单轴拉伸和压缩变形下大块金属玻璃（BMG）的非对称性，然后将扩展模型作为用户材料子程序（UMAT）实现到有限元程序中。在此基础上，对BMG复合材料在单向拉伸和压缩载荷作用下的变形行为进行了系统的数值模拟。采用von-Mises等效剪切塑性应变来表征BMG基体中剪切带的形核和扩展。对不同增韧颗粒体积分数、形状、取向和屈服应力的BMG复合材料的模拟单向拉伸应力-应变响应与压缩响应进行了比较。结果表明，BMG复合材料中剪切带的产生和扩展取决于增韧颗粒的几何特征和屈服应力，在单向拉伸和压缩下呈现出明显不同的演化特征。所得结果对BMG复合材料的设计和建模具有重要意义。
The free volume model is firstly extended to describe the asymmetry of bulk metallic glass (BMG) presented under the uniaxial tensile and compressive deformations, and then the extended model is implemented into a finite element code as a user material subroutine (UMAT). Based on such a UMAT, a systematic numerical simulation is performed to investigate the deformation behaviors of BMG composites subjected to uniaxial tensile and compressive loadings. The von-Mises equivalent shear plastic strain is adopted to characterize the nucleation and propagation of shear bands in the BMG matrix here. The simulated uniaxial tensile overall stress–strain responses of the BMG composites containing different volume fractions, shapes, orientations and yielding stresses of toughening particles are compared with the compressive ones. It is shown that the initiation and propagation of shear bands in the BMG composites depend on the geometric features and yielding stresses of the toughening particles and present obviously different evolution features under the uniaxial tension and compression. The obtained results are very useful for designing and modeling the BMG composites.
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钛基大块金属玻璃复合材料的拉伸和压缩行为
DOI：
10.1007/s12613-013-0769-5
发表时间：
2013-06
影响因子：
4.8
作者：
Wang, Yong-sheng;Hao, Guo-jian;Lin, Jun-pin
通讯作者：
Lin, Jun-pin
影响因子：
9.4
作者：
Szuecs, F;Kim, CP;Johnson, WL
通讯作者：
Johnson, WL
DOI：
10.1016/0001-6160(79)90055-5
发表时间：
1979-01-01
期刊：
ACTA METALLURGICA
影响因子：
--
作者：
ARGON, AS
通讯作者：
ARGON, AS
影响因子：
1.6
作者：
S. Bargmann;Tao Xiao;B. Klusemann
通讯作者：
S. Bargmann;Tao Xiao;B. Klusemann
影响因子：
9.8
作者：
Haofei Zhou;S. Qu;Wei Yang
通讯作者：
Haofei Zhou;S. Qu;Wei Yang