Investigation of the fatigue behaviour of carbon fibre reinforced plastics due to micro-damage and effects of the micro-damage on the ply strengths in the very high cycle fatigue regime

Hopmann, Christian; Marder, Johannes Alfred

doi:10.1007/978-3-658-24531-3_25

Fatigue of Materials at Very High Numbers of Loading Cycles 2018

DOI: 10.1007/978-3-658-24531-3_25

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Investigation of the fatigue behaviour of carbon fibre reinforced plastics due to micro-damage and effects of the micro-damage on the ply strengths in the very high cycle fatigue regime

Christian Hopmann

Johannes Alfred Marder

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2020

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A micromechanical model for loading and unloading behavior of fiber reinforced plastics under cyclic loading

2020

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The high fatigue resistance and low weight features make the unidirectional‐carbon fiber reinforced plastics (UD‐CFRP) attractive for cyclic loading applications. However, the complex damage mechanisms within the composite hinder the understanding of its fatigue response. An energy‐based fatigue model has been proposed for the fatigue behavior of epoxy polymers. However, this kind of approaches dependent on the accurate description of the material's behavior. Our work aims to build a representative volume element model (RVE) for the simulation of the cyclic shear loading behavior of UD‐CFRP, which could support the later extension of an energy‐based fatigue model. To precisely reproduce the micromechanical stress‐strain distribution within the matrix, a nonlinear viscoelastic model has been implemented and validated against experimental data. As a result, the simulated UD‐CFRP hysteresis, as well as the stiffness and strain energy density were accurately reproduced for two load ratios (R = 0.1 and R = − 1). Additionally, the cyclic strain accumulation observed in the UD‐CFRP can be accurately described by the proposed model.

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A micromechanical model for loading and unloading behavior of fiber reinforced plastics under cyclic loading

2020

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Investigation of the fatigue behaviour of carbon fibre reinforced plastics due to micro-damage and effects of the micro-damage on the ply strengths in the very high cycle fatigue regime

Cited by 1 publication

References 16 publications

A micromechanical model for loading and unloading behavior of fiber reinforced plastics under cyclic loading

A micromechanical model for loading and unloading behavior of fiber reinforced plastics under cyclic loading

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