A Hybrid Approach to Composite Damage and Failure Analysis Combining Synergistic Damage Mechanics and Peridynamics

Abstract

In most manufacturing processes for polymer matrix composites (PMCs) one starts with dry bundles of fibers. On resin infusion, the initially closed-pack fibers are spread out to the degree dictated by the intended fiber volume fraction, resulting in disordered fiber distributions and defects such as voids in the matrix. A novel procedure has been devised to create nonuniform fiber distributions by perturbing the initial dry fiber bundle. In order to calibrate the Peridynamic (PD) model to the representative volume element (RVE) used in the SDM approach, we will re-create statistical PD models with exact geometry of fibers and matrix, and manufacturing defects present. Procedures have been developed to simulate occurrence of voids of various sizes within the volume of the composite. Effect of the voids on the initiation of failure has been analyzed. The activities related to Task 2.2 cover the estimation of surface effects and effects at material interfaces in peridynarnic models of composites.

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Document Details

Document Type
Technical Report
Publication Date
Dec 31, 2016
Accession Number
AD1024838

Entities

People

  • Florin Bobaru
  • Ramesh Talreja

Organizations

  • Texas Engineering Experiment Station

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Composite Materials
  • Department Of Defense
  • Engineering
  • Failure Analysis
  • Laminates
  • Manufacturing
  • Materials
  • Materials Processing
  • Materials Science
  • Mechanical Properties
  • Mechanics
  • Micromechanics
  • Peridynamics
  • Polymer Matrix Composites
  • Resin Transfer Molding
  • Resins

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