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EnglishThe paper presents a computationally efficient numerical tool for interface modeling in fiber-reinforced composite structures. The proposed numerical tool is part of a computational platform built for virtual testing of composites developed within the scheme of the Carrera Unified Formulation (CUF), a unified hierarchical formulation to generate refined structural theories through a variable kinematic description. In this work, Lagrange-type polynomials (LE) are used to interpolate the displacement field over the cross-section leading to a purely displacement-based refined one-dimensional model. The Component-Wise modeling (CW), an approach that stems out of LE models, is utilized to model various components of composite structures across scales, e.g., fiber, matrix, laminae and laminates. A class of higher-order cohesive elements is implemented within the CW modeling framework for simulating interfacial fracture mechanics problems. Zero thickness cohesive cross-section elements are introduced along interface of various components of composite materials and structures. A dissipation-based arc-length scheme is implemented within the CUF framework to trace the equilibrium path. The arc-length constraint introduced is based on the energy dissipated during the delamination process. The numerical example demonstrates the effectiveness of the higher-order beam models.
Computationally efficient interface modeling in fiber-reinforced composites through displacement-based component-wise approach / Kaleel, Ibrahim; Petrolo, Marco; Carrera, Erasmo. - ELETTRONICO. - (2018). ((Intervento presentato al convegno American Society for Composites (ASC) 33rd Annual Technical Conference tenutosi a Seattle, USA nel 24-26 September 2018.
| Titolo: | Computationally efficient interface modeling in fiber-reinforced composites through displacement-based component-wise approach |
| Autori: | |
| Data di pubblicazione: | 2018 |
| Abstract: | The paper presents a computationally efficient numerical tool for interface modeling in fiber-rei...nforced composite structures. The proposed numerical tool is part of a computational platform built for virtual testing of composites developed within the scheme of the Carrera Unified Formulation (CUF), a unified hierarchical formulation to generate refined structural theories through a variable kinematic description. In this work, Lagrange-type polynomials (LE) are used to interpolate the displacement field over the cross-section leading to a purely displacement-based refined one-dimensional model. The Component-Wise modeling (CW), an approach that stems out of LE models, is utilized to model various components of composite structures across scales, e.g., fiber, matrix, laminae and laminates. A class of higher-order cohesive elements is implemented within the CW modeling framework for simulating interfacial fracture mechanics problems. Zero thickness cohesive cross-section elements are introduced along interface of various components of composite materials and structures. A dissipation-based arc-length scheme is implemented within the CUF framework to trace the equilibrium path. The arc-length constraint introduced is based on the energy dissipated during the delamination process. The numerical example demonstrates the effectiveness of the higher-order beam models. |
| Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |
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| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| KPC_ASC_2018_FINAL.pdf | Paper | 1. Preprint / Submitted Version | Non Pubblico - Accesso privato/ristretto | Administrator Richiedi una copia |
http://hdl.handle.net/11583/2714780
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