期刊
MATERIALS & DESIGN
卷 107, 期 -, 页码 212-220出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2016.06.040
关键词
Fiber-reinforced composite; Fatigue damage; Meso-model; Continuum damage mechanics; Stress ratio
This work presents a fatigue damage meso-model for fiber-reinforced plastic composites, in which the effect of stress ratios on the off-axis fatigue behavior is taken into account. The non-dimensional effective stress concept is introduced in the continuum damage mechanics method. Damage growths and fatigue failure are studied along axial, transverse and shear directions at meso-scale level. The proposed model is validated through numerical simulations that describe the meso fatigue damage accumulation and the fatigue life for off-axis unidirectional fiber-reinforced plastic composite laminates of arbitrary fiber orientation under different stress ratios. It is shown that the fatigue damage behavior and fatigue life for off-axis unidirectional glass/epoxy and carbon/epoxy composite laminates are adequately described by the proposed fatigue model over the range of different stress ratios. (C) 2016 Elsevier Ltd. All rights reserved.
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