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PRACTICAL PERIDYNAMIC MODELING FOR DAMAGE AND FAILURE PREDICTION

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Title: PRACTICAL PERIDYNAMIC MODELING FOR DAMAGE AND FAILURE PREDICTION   

 

Abstract: Predicting damage and failure of materials is one of the central themes of materials science and engineering.  Here, computer-aided engineering software applies the Finite Element Method (FEM) to capture the macroscopic stress-strain response.  However, virtual characterization of advanced materials with heterogeneities and discontinuities requires a different approach capable of providing clear linkage to material microstructure. A fundamental difficulty with implementation of such approach in existing engineering software is that damage in complex materials involves highly-coupled nonlinear processes, which constitute many challenges to existing FEM based models. The peridynamic method has a potential to address those challenges as it is based on equations that are valid everywhere, including discontinuities; it does not require an external criterion for crack initiation and propagation; and it invokes material damage through the direct material response. However, traditional FEM-based models remain 3 to 5 times faster than peridynamic models in performing structural analysis of materials, which limits the acceptance of peridynamic models in materials science and engineering. The overall goal of this paper is to demonstrate practical peridynamic modeling for material damage and failure prediction.  

 

Authors: Alex V. Vasenkov 

 

Conference: CAMX 2017 –Orlando

 

SKU/Code: TP17-0013

 

Pages: 13


 

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