Análisis por elementos finitos del crecimiento de grietas en modo I+II en uniones adhesivas usando un nuevo elemento singular
Adhesive joints are increasingly used in a wide range of industries, requiring detailed analyses of crack growth. These studies often rely on finite element method (FEM) simulations, which face challenges such as logarithmic stress singularities at crack tips on Winkler-type spring interfaces. Addre...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universidad de Sevilla (US) |
| Repositorio: | idUS. Depósito de Investigación de la Universidad de Sevilla |
| OAI Identifier: | oai:dnet:idus________::97c782ba158f826c668c4f8f8221ed37 |
| Acceso en línea: | https://hdl.handle.net/11441/186119 |
| Access Level: | acceso abierto |
| Palabra clave: | Unión adhesiva Método de los Elementos Finitos Elemento singular Singularidad logarítmica Adhesive joint Finite Element Method Singular element Logarithmic singularity |
| Sumario: | Adhesive joints are increasingly used in a wide range of industries, requiring detailed analyses of crack growth. These studies often rely on finite element method (FEM) simulations, which face challenges such as logarithmic stress singularities at crack tips on Winkler-type spring interfaces. Addressing these singularities typically requires strong mesh refinement, resulting in high computational costs. This work proposes a novel finite element for plane fracture analysis in mode I+II, focusing on cracks along interfaces modeled by Winkler-type spring distributions. The element is triangular with 5 nodes obtained by collapsing a 6-node rectangular element. It incorporates the asymptotic elastic solution for logarithmic stress singularities, improving the accuracy of Energy Release Rate (ERR) calculations compared to standard finite elements. This approach achieves higher accuracy in simulations with the presence of cracks while substantially reducing computational costs. These results demonstrate the potential of the proposed element to enhance the efficiency and accuracy of fracture mechanics analyses in adhesive joints, making it a promising tool for addressing interface-related challenges in FEM. |
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