Numerical simulation for fatigue damage progress in FML using embedded process zone elements

T. Yamaguchi, Tomonaga Okabe

Research output: Contribution to conferencePaperpeer-review

1 Citation (Scopus)

Abstract

In this paper, a new numerical approach for addressing the fatigue damage progress of the Fiber Metal Laminate (FML) is presented. The layer-wise finite element model are used to represent the metal facesheet or composite layers. The virtual crack extension method is used to predict the crack growth rate in the metal facesheet based on the Pari's law. In addition, the embedded process zone elements are used to predict split length and delamination shape. Proposed simulation introduces a damage-mechanics concept into the degradation process in embedded process zone elements in order to express the damage progress due to the cyclic loading. This enable us to address the complicated fatigue damage process seen in the FML. We applied this model to the Ti / GFRP laminates and monolithic titanium specimen, and then compared the simulated results with the experimental data reported in the reference. We confirmed that this model could reproduce the fatigue damage process in the FML very well.

Original languageEnglish
Publication statusPublished - 2008 Dec 1
EventUS-Japan Conference on Composite Materials 2008, US-Japan 2008 - Tokyo, Japan
Duration: 2008 Jun 62008 Jun 7

Other

OtherUS-Japan Conference on Composite Materials 2008, US-Japan 2008
CountryJapan
CityTokyo
Period08/6/608/6/7

Keywords

  • Delamination
  • Fatigue
  • Fiber metal laminate
  • Finite element method
  • Pari's law

ASJC Scopus subject areas

  • Ceramics and Composites

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