A finite element analysis of fractured sandwich composite structures under small scale yielding
- Material Science & Engineering International Journal
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Ilias Tourlomousiss, Efstathios E Theotokoglou
Ilias Tourlomousiss, Efstathios E Theotokoglou
Ilias Tourlomousiss, Efstathios E Theotokoglou
Abstract
In this paper a sandwich composite beam under three point bending. In the core material of the beam an initially small crack is considered. In this study a computational analysis is developed based on the extension of Elastic Fracture Mechanics to the Elasto-plastic Fracture Mechanics. The plastic zone length and the distribution of the stress field around the crack tip are evaluated. Furthermore an analysis of the cracking propagation path utilizing concepts of the Elastoplastic Fracture Mechanics Theory is performed. A finite element analysis code has been developed in order to predict the position of the direction and the length of the plastic zone ahead of the crack tip.
In this paper a sandwich composite beam under three point bending. In the core material of the beam an initially small crack is considered. In this study a computational analysis is developed based on the extension of Elastic Fracture Mechanics to the Elasto-plastic Fracture Mechanics. The plastic zone length and the distribution of the stress field around the crack tip are evaluated. Furthermore an analysis of the cracking propagation path utilizing concepts of the Elastoplastic Fracture Mechanics Theory is performed. A finite element analysis code has been developed in order to predict the position of the direction and the length of the plastic zone ahead of the crack tip.
In this paper a sandwich composite beam under three point bending. In the core material of the beam an initially small crack is considered. In this study a computational analysis is developed based on the extension of Elastic Fracture Mechanics to the Elasto-plastic Fracture Mechanics. The plastic zone length and the distribution of the stress field around the crack tip are evaluated. Furthermore an analysis of the cracking propagation path utilizing concepts of the Elastoplastic Fracture Mechanics Theory is performed. A finite element analysis code has been developed in order to predict the position of the direction and the length of the plastic zone ahead of the crack tip.
In this paper a sandwich composite beam under three point bending. In the core material of the beam an initially small crack is considered. In this study a computational analysis is developed based on the extension of Elastic Fracture Mechanics to the Elasto-plastic Fracture Mechanics. The plastic zone length and the distribution of the stress field around the crack tip are evaluated. Furthermore an analysis of the cracking propagation path utilizing concepts of the Elastoplastic Fracture Mechanics Theory is performed. A finite element analysis code has been developed in order to predict the position of the direction and the length of the plastic zone ahead of the crack tip.
Keywords
composite structure, computational analysis, fiber reinforced plastics, fracture mechanics, von mises and tresca yielding criteria, stress intensity factor
