Journal of Materials Science

, Volume 41, Issue 20, pp 6510–6519 | Cite as

A model for predicting the evolution of multiple cracks on multiple length scales in viscoelastic composites

Article

Abstract

A model is presented herein for predicting the evolution of numerous cracks on multiple length scales, the objective of such a model being to develop the capability to predict failure of structural components to perform their intended tasks. Such a capability would then be useful as a predictive tool for designing structural components so as not to fail, but rather to succeed in performing their intended tasks. The model developed herein is somewhat involved, being based in continuum mechanics and thermodynamics, but is nevertheless expected to be cost effective (wherever sufficient accuracy permits) when compared to more costly experimental means of determining component life. An essential ingredient within the context of the model is that cracks must develop on widely differing length scales. Where this is observed to occur in nature, which is surprisingly often, there are potential simplifications over more generally described but practically untenable approaches, that can lead to (at least partly) computational multiscale algorithms capable of assimilating failure due to multiple cracking with a high degree of accuracy. The model presented herein will be briefly described within a mathematical framework, and an example problem will be presented that is representative of certain currently relevant technologies.

Keywords

Local Scale Crack Opening Displacement Cohesive Zone Damage Parameter Cohesive Zone Model 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

The authors are grateful for funding received for this research from the US Army Research Laboratory under contract no. W911NF-04-2-0011.

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Copyright information

© Springer Science+Business Media, LLC 2006

Authors and Affiliations

  1. 1.College of EngineeringUniversity of Nebraska-LincolnLincolnUSA
  2. 2.Stress EngineeringHoustonUSA

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