The cycle jump concept for modelling high-cycle fatigue in composite materials
Abstract
Residual stiffness models are an important class of fatigue models for composites that take into account the progressive degradation of stiffness during fatigue life. When those models are applied to full-scale industrial components with complex geometry, stress concentrators and multiaxial loads, the stiffness degradation will never be uniform throughout the composite structure, but rather will be concentrated in certain highly stressed areas. Due to the larger amount of fatigue damage in those areas, and hence the lower stiffness, the load-bearing capacity of those areas is reduced over time, and stresses ...
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