期刊
ENGINEERING FRACTURE MECHANICS
卷 214, 期 -, 页码 558-577出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.engfracmech.2019.04.019
关键词
DCB test; Mode-I delamination; Cohesive-zone model; Parameter identification; Analytical solution; Timoshenko beam theory; Linear-elastic fracture mechanics
类别
资金
- Croatian Science Foundation [IP-2016-06-4775]
- University of Rijeka [17.06.2.2.01]
A novel parameter identification method for a bi-linear cohesive-zone model (CZM), based on closed-form analytical solutions for mode-I delamination in a double cantilever beam (DCB), is proposed. The parameters to be identified are the area under the traction-separation law of the CZM, the maximum traction and the initial (linear-elastic) stiffness. Using the three-phase analytical solution, each parameter is identified separately from a different phase. The proposed method requires only the measurement of the load-point displacement and the applied load, while the measurement of the crack length is not necessary. Compared to methods that use complex numerical models and sophisticated optimisation algorithms, the proposed method is extremely fast and robust. Using experimental data from the literature, parameter identification results are presented. It is shown that the bi-linear CZM with identified parameters can be used to model delamination in a DCB for many different combinations of bulk material and adhesive with an acceptable level of accuracy, except for the case of delamination of composites with fibre bridging.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据