XFEM SIMULATION OF FATIGUE CRACK GROWTH IN ALUMINUM ZIRCONIA REINFORCED COMPOSITES

被引：1

作者：

Rostami, Rahman Bajmalu ^{[1
]}

Schmauder, Siegfried ^{[1
]}

机构：

[1] Univ Stuttgart, Mat Testing Inst IMWF, D-70569 Stuttgart, Germany

来源：

INTERNATIONAL JOURNAL FOR MULTISCALE COMPUTATIONAL ENGINEERING | 2019年 / 17卷 / 05期

关键词：

XFEM; finite element method; fatigue crack growth; composites; EXTENDED FINITE-ELEMENT; NUMERICAL-SIMULATION; LEVEL SETS; BEHAVIOR; PROPAGATION; FRACTURE;

D O I：

10.1615/IntJMultCompEng.2019029470

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of particles as reinforcement on fatigue crack growth behavior of Al 6061/ZrO2 composite material was investigated by the eXtended Finite Element Method (XFEM). This developed methodology represents the entire crack independently, so remeshing is not necessary. Results show that the crack propagation rate increased as volume fraction increased. The same trend was also observed as the particle size decreased in a constant volume fraction. The stress values within the reinforcements were much higher than that in the matrix, and as a consequence, the transferred load to the reinforcing particles slowed down the crack propagation speed by reduction in the stress concentration at the crack tip, and thus enhanced fatigue performance.

引用

页码：469 / 481

页数：13

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