On modeling failure envelopes in residual strength-based fatigue life analyses of cfrp with regard to load direction changes
Because of their their excellent ratio of high stiffness and strength to low density, the use of composite materials is growing within several industrial segments. Whilst in operation, most of the parts are subjected to varying cyclic loads, which demand appropriate models for reliable dimensioning. The main focus of the current reasearch is the lifetime estimation of continuous fibre reinforced plastics within a layer-based fatigue analysis. In the present paper, the downsizing of the failure envelope due to multiaxial cyclic loads is investigated with regards to variable amplitude loads and change of load directions.
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