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Computational Mechanics

, Volume 27, Issue 6, pp 504–512 | Cite as

A computational approach to the investigation of impact damage evolution in discontinuously reinforced fiber composites

  • H. K. Lee

Abstract

 A micromechanical damage constitutive model for discontinuous fiber-reinforced composites is developed to perform impact simulation. Progressive interfacial fiber debonding and a crack-weakened model are considered in accordance with a statistical function to describe the varying probability of damage. Emanating from a constitutive damage model for aligned fiber-reinforced composites, a micromechanical damage constitutive model for randomly oriented, discontinuous fiber-reinforced composites is developed. The constitutive damage model is then implemented into a finite element program DYNA3D to simulate the dynamic behavior and the progressive damage of composites. Finally, numerical simulations for a biaxial loading test and a four-point bend impact test of composite specimens are performed to validate the computational model and investigate impact damage evolution in discontinuous fiber-reinforced composite structures. Furthermore, in order to address the influence of Weibull parameter S o on the damage evolution in composites, parametric analysis is carried out.

Keywords

Impact Test Load Test Fiber Composite Damage Evolution Element Program 
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.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2001

Authors and Affiliations

  • H. K. Lee
    • 1
  1. 1.Department of Civil, Architectural, and Environmental Engineering, University of Miami, Coral Gables, FL 33124-0630 e-mail: hklee@miami.eduUS

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