{"title":"Evaluations on VCCT and CZM methods of delamination propagation simulation for composite specimens","authors":"Rui Liu, Zhefeng Yu, Fedor Nasonov","doi":"10.1007/s42401-023-00231-8","DOIUrl":null,"url":null,"abstract":"<div><p>Fiber-reinforced composite laminates are widely used in aerospace and other fields. Delamination damage is the main damage form of laminates, which has always been one of the focus problems of composite mechanics. Virtual crack closure technique (VCCT) and cohesive zone modeling (CZM) are two well-known numerical methods frequently used for crack propagation modeling. In this study, to better understand the advantages and limitations of these two methods, as well as the process of practical application, the evaluations on them are conducted. A double cantilever beam (DCB) specimen, an end notched flexure (ENF) specimen, and a mixed-mode bending (MMB) specimen as benchmark examples are modeled in ABAQUS. The mode I, mode II, and mixed-mode (I + II) delamination initiation and propagation behaviors of unidirectional specimens are simulated using two above methods. Finite element (FE) results are compared with experimental results available in the literature to verify the validity of the FE models. Finally, the accuracy, convergence speed, run-time, mesh dependency, and influence of modeling parameters of each method are discussed based on the simulation of DCB test.</p></div>","PeriodicalId":36309,"journal":{"name":"Aerospace Systems","volume":"6 4","pages":"621 - 632"},"PeriodicalIF":0.0000,"publicationDate":"2023-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Aerospace Systems","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1007/s42401-023-00231-8","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Earth and Planetary Sciences","Score":null,"Total":0}
引用次数: 1
Abstract
Fiber-reinforced composite laminates are widely used in aerospace and other fields. Delamination damage is the main damage form of laminates, which has always been one of the focus problems of composite mechanics. Virtual crack closure technique (VCCT) and cohesive zone modeling (CZM) are two well-known numerical methods frequently used for crack propagation modeling. In this study, to better understand the advantages and limitations of these two methods, as well as the process of practical application, the evaluations on them are conducted. A double cantilever beam (DCB) specimen, an end notched flexure (ENF) specimen, and a mixed-mode bending (MMB) specimen as benchmark examples are modeled in ABAQUS. The mode I, mode II, and mixed-mode (I + II) delamination initiation and propagation behaviors of unidirectional specimens are simulated using two above methods. Finite element (FE) results are compared with experimental results available in the literature to verify the validity of the FE models. Finally, the accuracy, convergence speed, run-time, mesh dependency, and influence of modeling parameters of each method are discussed based on the simulation of DCB test.
期刊介绍:
Aerospace Systems provides an international, peer-reviewed forum which focuses on system-level research and development regarding aeronautics and astronautics. The journal emphasizes the unique role and increasing importance of informatics on aerospace. It fills a gap in current publishing coverage from outer space vehicles to atmospheric vehicles by highlighting interdisciplinary science, technology and engineering.
Potential topics include, but are not limited to:
Trans-space vehicle systems design and integration
Air vehicle systems
Space vehicle systems
Near-space vehicle systems
Aerospace robotics and unmanned system
Communication, navigation and surveillance
Aerodynamics and aircraft design
Dynamics and control
Aerospace propulsion
Avionics system
Opto-electronic system
Air traffic management
Earth observation
Deep space exploration
Bionic micro-aircraft/spacecraft
Intelligent sensing and Information fusion