Micromechanics-based simulation for the fracture of composite materials with cohesive/volumetric finite-element schemes

M. Nishikawa, T. Okabe, N. Takeda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The understanding of meso-scale fracture behavior of fiber-reinforced composite materials (such as initiation, coalescence and accumulation of microscopic damage) is important for evaluating the macroscopic strength or toughness. Thus the present study proposes a micromechanics-based simulation for the fracture of composite materials with cohesive/volumetric finite-element schemes. The present simulation handles the multiple, interacting damage mechanisms involved in the damage process of composites, including interacting fiber breaks, matrix plasticity and cracking, and interfacial debonding. First the modeling for the microscopic damage is validated and calibrated by simulating the microscopic damage in single-fiber composite (SFC) tests. The present simulation well reproduces the microscopic damage and fragmentation process in SFC tests. Based on the calibrated micromechanical model, we simulate the meso-scale fracture of short-fiber reinforced polymer-matrix composites, and discuss the effect of constitutive structure of composites on damage initiation and coalescence.

Original languageEnglish
Title of host publicationAmerican Society for Composites - 22nd Technical Conference of the American Society for Composites 2007 - Composites
Subtitle of host publicationEnabling a New Era in Civil Aviation
Pages39-58
Number of pages20
Publication statusPublished - 2007
Event22nd Technical Conference of the American Society for Composites 2007 - Composites: Enabling a New Era in Civil Aviation - Seattle, WA, United States
Duration: 2007 Sep 172007 Sep 19

Publication series

NameAmerican Society for Composites - 22nd Technical Conference of the American Society for Composites 2007 - Composites: Enabling a New Era in Civil Aviation
Volume1

Other

Other22nd Technical Conference of the American Society for Composites 2007 - Composites: Enabling a New Era in Civil Aviation
Country/TerritoryUnited States
CitySeattle, WA
Period07/9/1707/9/19

ASJC Scopus subject areas

  • Ceramics and Composites

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