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Ministerio de EconomÃa y Competitividad (Espanya) | |
Bak, Brian L V
Turon Blasco, Albert Lindgaard, Esben Lund, Erik |
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A novel computational method for simulating fatigue-driven mixed-mode delamination cracks in laminated structures under cyclic loading is presented. The proposed fatigue method is based on linking a cohesive zone model for quasi-static crack growth and a Paris’ law-like model described as a function of the energy release rate for the crack growth rate during cyclic loading. The J-integral has been applied to determine the energy release rate. Unlike other cohesive fatigue methods, the proposed method depends only on quasi-static properties and Paris’ law parameters without relying on parameter fitting of any kind. The method has been implemented as a zero-thickness eight-node interface element for Abaqus and as a spring element for a simple finite element model in MATLAB. The method has been validated in simulations of mode I, mode II, and mixed-mode crack loading for both self-similar and non-self-similar crack propagation. The method produces highly accurate results compared with currently available methods and is capable of simulating general mixed-mode non-self-similar crack growth problems The work was supported by the Danish Centre for Composite Structures and Materials forWind Turbines (DCCSM), grant no. 09-067212 from the Danish Strategic Research Council. This support is gratefully acknowledged. The second author acknowledges the support of the Spanish government through the Ministerio de EconomÃa y Competitividad under the contract DPI2012-34465 |
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http://hdl.handle.net/2072/299158 | |
eng | |
Wiley | |
Tots els drets reservats | |
Materials laminats -- Fatiga
Laminated materials -- Fatigue Materials laminats -- Fractura Laminated materials -- Fracture Mecà nica de fractura Fracture mechanics Assaigs de materials -- Mètodes de simulació Materials --T esting -- Simulation methods |
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A simulation method for high-cycle fatigue-driven delamination using a cohesive zone model | |
info:eu-repo/semantics/article | |
Recercat |