Cohesive analysis of a 3D benchmark for delamination growth under quasi-static and fatigue loading conditions

被引：7

作者：

Raimondo, Antonio ^{[1
]}

Davila, Carlos G. ^{[2
]}

Bisagni, Chiara ^{[1
]}

机构：

[1] Delft Univ Technol, Fac Aerosp Engn, Delft, Netherlands

[2] NASA Langley Res Ctr, Durabil Damage Tolerance & Reliabil Branch, 4, Hampton, VA USA

来源：

FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES | 2022年 / 45卷 / 07期

关键词：

cohesive zone model; delamination; fatigue; Paris law; S-N diagram; COMPOSITE STIFFENED STRUCTURES; DAMAGE TOLERANCE; SIMULATION; LIFE;

D O I：

10.1111/ffe.13712

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This paper evaluates the capabilities of the recently developed CF20 cohesive fatigue model, which can predict crack initiation as well as the rates of crack propagation by relying on intrinsic relationships between a stress-life diagram and its corresponding Paris law. The model is validated here using a partially reinforced double cantilever beam (R-DCB) benchmark proposed in literature. The two parameters needed for the CF20 cohesive fatigue model were obtained by performing preliminary analyses of a conventional DCB. The analysis results indicate that the CF20 cohesive fatigue model can accurately reproduce the complex evolution of the delamination observed in the R-DCB.

引用

页码：1942 / 1952

页数：11

共 27 条

[1] A unified formulation for fatigue crack onset and growth via cohesive zone modelling [J].