Fatigue Crack Growth Analysis of Functionally Graded Materials by EFGM and XFEM

被引：19

作者：

Pant, Mohit ^{[1
]}

Bhattacharya, Somnath ^{[2
]}

机构：

[1] Natl Inst Technol Hamirpur, Dept Mech Engn, Hamirpur 177005, HP, India

[2] Natl Inst Technol Raipur, Dept Mech Engn, Raipur 492010, Chhattisgarh, India

来源：

INTERNATIONAL JOURNAL OF COMPUTATIONAL METHODS | 2017年 / 14卷 / 01期

关键词：

FGM; XFEM; EFGM; fatigue crack growth; enrichment criterion; SIF; FINITE-ELEMENT-METHOD; SHAPE SENSITIVITY METHOD; STRESS INTENSITY FACTORS; FRACTURE-ANALYSIS; PIEZOELECTRIC MATERIALS; VIBRATION ANALYSIS; SOLIDS; MODEL; SIMULATION; COATINGS;

D O I：

10.1142/S0219876217500049

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The present work investigates the fatigue life of a functionally graded material (FGM) made of aluminum alloy and alumina (ceramic) under cyclic mixed mode loading. Both element free Galerkin method (EFGM) and extended finite element method (XFEM) are employed to simulate and compare the fatigue crack growth. Partition of unity is used to track the crack path in XFEM while a new enrichment criterion is proposed to track the crack path in EFGM. The fatigue lives of aluminum alloy, FGM and an equivalent composite (having the same composition as of FGM) are compared for a major edge crack and center crack in a rectangular domain. The proposed enrichment criterion not only simulates the crack propagation but it also extends the applicability and robustness of EFGM for accurate estimation of fatigue life of component.

引用

页数：33

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