A novel phase-field based cohesive zone model for modeling interfacial failure in composites

被引:13
作者
Bian, Pei-Liang [1 ]
Qing, Hai [1 ]
Schmauder, Siegfried [2 ]
机构
[1] Nanjing Univ Aeronaut & Astronaut, State Key Lab Mech & Control Mech Struct, Nanjing, Peoples R China
[2] Univ Stuttgart, Inst Mat Testing Mat Sci & Strength Mat, Stuttgart, Germany
基金
中国国家自然科学基金;
关键词
cohesive crack; finite element method; interfacial debonding; phase-field theory; FINITE-ELEMENT-METHOD; BRITTLE-FRACTURE; CRACK-PROPAGATION; DAMAGE; FIBER; FRAMEWORK; KINKING; GROWTH;
D O I
10.1002/nme.6821
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The interface plays a critical role in the mechanical properties of composites. In the present work, a novel phase-field based cohesive zone model (CZM) is proposed for the cracking simulation. The competition and interaction between the bulk and interfacial cracking are taken into consideration directly in both displacement- and phase-field. A family of modified degradation functions is utilized to describe the traction-separation law in the CZM. Finite element implementation of the present CZM was carried out with a completely staggered algorithm. Several numerical examples, including a single bar tension test, a double cantilever beam test, a three-point bending test, and a single-fiber reinforced composite test, are carried out to verify the present model by comparison with existing numerical and experimental results. The present model shows its advantage on modeling interaction between bulk and interfacial cracking.
引用
收藏
页码:7054 / 7077
页数:24
相关论文
共 51 条
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Zhang, Peng ;
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COMPOSITE STRUCTURES, 2020, 232