Composite delamination analysis using finite element methods

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

Abstract

The fracture mechanics-based virtual crack closure technique (VCCT) is commonly used to simulate composite delamination failure. However, this technique is limited by the need for a pre-defined crack, solution convergence issues, and computational inefficiency. To overcome these limitations, an alternative delamination simulation method using a cohesive zone model (CZM) is investigated. The CZM is realized by incorporating special cohesive elements between continuum finite elements of adjacent lamina. An energy based CZM constitutive law reduces mesh dependence, but requires specification of additional failure parameters in order to adequately predict the damage process. This paper describes a modeling method for the implementation of CZM to predict delamination damage in fiber-reinforced polymer composite laminates. Procedures for calibrating cohesive element parameters with VCCT results along with computational techniques used to suppress numerical convergence issues are discussed. Laminated composite double cantilever beam (DCB) and end notch flexure (ENF) examples are analyzed using the commercial finite element code ABAQUS. Load versus deflection curves predicted using theory, VCCT, and CZM analyses are compared.

Original languageEnglish (US)
Title of host publicationSAMPE '09 Spring Symposium Conference Proceedings
Subtitle of host publicationChanging Times. New Opportunities. Are You Prepared?
StatePublished - Dec 1 2009
EventSAMPE '09 Spring Symposium Conference Proceedings - Baltimore, MD, United States
Duration: May 18 2009May 21 2009

Publication series

NameInternational SAMPE Symposium and Exhibition (Proceedings)
Volume54
ISSN (Print)0891-0138

Other

OtherSAMPE '09 Spring Symposium Conference Proceedings
CountryUnited States
CityBaltimore, MD
Period5/18/095/21/09

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Matthews, P. J., Koudela, K. L., & Bakis, C. E. (2009). Composite delamination analysis using finite element methods. In SAMPE '09 Spring Symposium Conference Proceedings: Changing Times. New Opportunities. Are You Prepared? (International SAMPE Symposium and Exhibition (Proceedings); Vol. 54).