A New Approach to Fatigue Damage Modeling of Composite Laminates

Abstract:

Fatigue damage of composites can be described by the residual stiffness and residual strength, and the same damage state can be described by the two mechanical parameters equivalently. Based on this assumption, a new pair of fatigue damage accumulation models are established to simulate fatigue behavior and predict the fatigue life of composites. Each of two equations contains three parameters and has the similar form, and the power function relationships between the two damage indices are constructed. The proposed model, combining with constant life diagrams and failure criteria are used to estimate the fatigue life of composites, and good agreement is observed between the present model and experimental results.

• Periodical: Advanced Materials Research (Volume 338)
• Pages: 315-318
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.338.315
• Online since: September 2011
• Authors: Peng Gang Mu, Xiao Peng Wan, Mei Ying Zhao
• Keywords: Composite, Fatigue Damage, Fatigue Life, Residual Stiffness, Residual Strength

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