A fatigue damage meso-model for fiber-reinforced composites with stress ratio effect. (5th October 2016)

• Record Type: Journal Article
• Authors: Zhang, Wenjiao; Zhou, Zhengong; Scarpa, Fabrizio; Zhao, Shuyuan
• Is Part Of: Materials & design. Volume 107(2016)
• Page Start: 212
• Page End: 220
• Publication Date: 2016-10-05
• Subjects: Fiber-reinforced composite -- Fatigue damage -- Meso-model -- Continuum damage mechanics -- Stress ratio; Materials -- Periodicals; Engineering design -- Periodicals; Matériaux -- Périodiques; Conception technique -- Périodiques; Electronic journals; 620.11
• DOI: 10.1016/j.matdes.2016.06.040
• Languages: English
• ISSNs: 0264-1275

Abstract

Abstract: 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. Graphical abstract: Highlights: Novel fatigue damage model at mesoscale with stress ratios effects Extensive study of fatigue meso -damage growth under high and low stress levels and different stress ratios Prediction of the off-axial fatigue behavior in unidirectional composite laminates