{"title":"应变速率对复合冲击损伤的影响:BVID到穿孔","authors":"Darko Ivančević, Jakov Ratković","doi":"10.1016/j.ijmecsci.2025.110907","DOIUrl":null,"url":null,"abstract":"<div><div>The work describes the development and application of a strain rate-dependent constitutive model for the simulation of impact damage in composite structures. The work is a continuation of the previous work by the authors with enhancements of the VUMAT subroutine that enable accurate determination of the full perforation threshold of the composite plates during impact events. The constitutive model has been extended by incorporating strain rate effects on the fracture energies in the transverse fracture modes. The improved compressive longitudinal failure initiation and evolution modelling has been incorporated by inclusion of shear stress contributions. Additionally, an Effective Failure Strain (EFS) element removal criterion is implemented to accurately capture the perforation of composite laminates. Thus, besides the improved longitudinal compressive damage modelling, the novelty of this study is found in combining it with the comprehensive strain rate dependence of the material properties and the employment of the EFS element removal criterion in impact damage assessment. These improvements enabled the distinction between BVID (low-energy conditions) and full perforation damage (high-energy conditions). Validation is performed by testing the simulation results obtained by utilising the enhanced VUMAT model with experimental data from the reference study. Impact simulations using a steel hemispherical impactor on the AS4/8552 carbon fibre/epoxy resin material system were performed at three different energy levels. The results have shown the importance of the inclusion of strain rate effects and delamination modelling. The effectiveness of the employed EFS element removal criterion in the assessment of full perforation of composite plates during impacts was proven.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"307 ","pages":"Article 110907"},"PeriodicalIF":9.4000,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Strain rate effects on composite impact damage: BVID to perforation\",\"authors\":\"Darko Ivančević, Jakov Ratković\",\"doi\":\"10.1016/j.ijmecsci.2025.110907\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The work describes the development and application of a strain rate-dependent constitutive model for the simulation of impact damage in composite structures. The work is a continuation of the previous work by the authors with enhancements of the VUMAT subroutine that enable accurate determination of the full perforation threshold of the composite plates during impact events. The constitutive model has been extended by incorporating strain rate effects on the fracture energies in the transverse fracture modes. The improved compressive longitudinal failure initiation and evolution modelling has been incorporated by inclusion of shear stress contributions. Additionally, an Effective Failure Strain (EFS) element removal criterion is implemented to accurately capture the perforation of composite laminates. Thus, besides the improved longitudinal compressive damage modelling, the novelty of this study is found in combining it with the comprehensive strain rate dependence of the material properties and the employment of the EFS element removal criterion in impact damage assessment. These improvements enabled the distinction between BVID (low-energy conditions) and full perforation damage (high-energy conditions). Validation is performed by testing the simulation results obtained by utilising the enhanced VUMAT model with experimental data from the reference study. Impact simulations using a steel hemispherical impactor on the AS4/8552 carbon fibre/epoxy resin material system were performed at three different energy levels. The results have shown the importance of the inclusion of strain rate effects and delamination modelling. The effectiveness of the employed EFS element removal criterion in the assessment of full perforation of composite plates during impacts was proven.</div></div>\",\"PeriodicalId\":56287,\"journal\":{\"name\":\"International Journal of Mechanical Sciences\",\"volume\":\"307 \",\"pages\":\"Article 110907\"},\"PeriodicalIF\":9.4000,\"publicationDate\":\"2025-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Mechanical Sciences\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0020740325009890\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, MECHANICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Mechanical Sciences","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0020740325009890","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
Strain rate effects on composite impact damage: BVID to perforation
The work describes the development and application of a strain rate-dependent constitutive model for the simulation of impact damage in composite structures. The work is a continuation of the previous work by the authors with enhancements of the VUMAT subroutine that enable accurate determination of the full perforation threshold of the composite plates during impact events. The constitutive model has been extended by incorporating strain rate effects on the fracture energies in the transverse fracture modes. The improved compressive longitudinal failure initiation and evolution modelling has been incorporated by inclusion of shear stress contributions. Additionally, an Effective Failure Strain (EFS) element removal criterion is implemented to accurately capture the perforation of composite laminates. Thus, besides the improved longitudinal compressive damage modelling, the novelty of this study is found in combining it with the comprehensive strain rate dependence of the material properties and the employment of the EFS element removal criterion in impact damage assessment. These improvements enabled the distinction between BVID (low-energy conditions) and full perforation damage (high-energy conditions). Validation is performed by testing the simulation results obtained by utilising the enhanced VUMAT model with experimental data from the reference study. Impact simulations using a steel hemispherical impactor on the AS4/8552 carbon fibre/epoxy resin material system were performed at three different energy levels. The results have shown the importance of the inclusion of strain rate effects and delamination modelling. The effectiveness of the employed EFS element removal criterion in the assessment of full perforation of composite plates during impacts was proven.
期刊介绍:
The International Journal of Mechanical Sciences (IJMS) serves as a global platform for the publication and dissemination of original research that contributes to a deeper scientific understanding of the fundamental disciplines within mechanical, civil, and material engineering.
The primary focus of IJMS is to showcase innovative and ground-breaking work that utilizes analytical and computational modeling techniques, such as Finite Element Method (FEM), Boundary Element Method (BEM), and mesh-free methods, among others. These modeling methods are applied to diverse fields including rigid-body mechanics (e.g., dynamics, vibration, stability), structural mechanics, metal forming, advanced materials (e.g., metals, composites, cellular, smart) behavior and applications, impact mechanics, strain localization, and other nonlinear effects (e.g., large deflections, plasticity, fracture).
Additionally, IJMS covers the realms of fluid mechanics (both external and internal flows), tribology, thermodynamics, and materials processing. These subjects collectively form the core of the journal's content.
In summary, IJMS provides a prestigious platform for researchers to present their original contributions, shedding light on analytical and computational modeling methods in various areas of mechanical engineering, as well as exploring the behavior and application of advanced materials, fluid mechanics, thermodynamics, and materials processing.