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A micromechanical model for a viscoelastic cohesive zone

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Abstract

A micromechanical model for a viscoelastic cohesive zone is formulated herein. Care has been taken in the construction of a physically-based continuum mechanics model of the damaged region ahead of the crack tip. The homogenization of the cohesive forces encountered in this region results in a damage dependent traction-displacement law which is both single integral and internal variable-type. An incrementalized form of this traction-displacement law has been integrated numerically and placed within an implicit finite element program designed to predict crack propagation in viscoelastic media. This research concludes with several example problems on the response of this model for various displacement boundary conditions.

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Authors and Affiliations

  1. Department of Aerospace, Texas A&M University, Engineering College Station, Texas, 77843, USA

    David H. Allen & Chad R. Searcy

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  1. David H. Allen
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  2. Chad R. Searcy
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Allen, D.H., Searcy, C.R. A micromechanical model for a viscoelastic cohesive zone. International Journal of Fracture 107, 159–176 (2001). https://doi.org/10.1023/A:1007693116116

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