A mesoscale fatigue progressive damage model for 3D woven composites

被引：21
|
作者：
Guo, Junhua [1 ,2 ]
Wen, Weidong [1 ,2 ,3 ]
Zhang, Hongjian [1 ,2 ]
Cui, Haitao [1 ,2 ,3 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Coll Energy & Power Engn, Nanjing 210016, Jiangsu, Peoples R China
[2] Nanjing Univ Aeronaut & Astronaut, Aeroengine Thermal Environm & Struct Key Lab, Minist Ind & Informat Technol, Nanjing 210016, Jiangsu, Peoples R China
[3] Nanjing Univ Aeronaut & Astronaut, State Key Lab Mech & Control Mech Struct, Nanjing 210016, Jiangsu, Peoples R China
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2021年 / 152卷
关键词：
Fatigue progressive damage model; Life prediction; Damage process analysis; Full-thickness unit cell model; 3D woven composites; FINITE-ELEMENT-ANALYSIS; BRAIDED COMPOSITES; FAILURE CRITERIA; LIFE PREDICTION; BEHAVIORS; ANGLE; AXIS; AMBIENT;
D O I：
10.1016/j.ijfatigue.2021.106455
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
A mesoscale fatigue progressive damage model (FPDM) is proposed for fatigue life prediction and failure behavior assessment of 3D woven composites (3DWC). The Hashin's fatigue criteria and the maximum tensile/ shear stress criteria are used as damage activation criteria for the yarn and resin-rich matrix, respectively. A fatigue damage evolution model is developed based on Fang's static-load damage evolution model, where the damage irreversibility and compressive crack closure effect are considered. The UserMat subroutine and APDL language in ANSYS are employed to implement the fatigue process of 3DWC. The results show that all predicted fatigue lives are within two-fold error band.
引用
收藏
页数：17
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