Thermomechanical Cohesive Zone Models for the Analysis of Composite Failure under Thermal Gradients and Transients
The coupled thermomechanical numerical analysis of damaged composite structures loaded by temperature transients and gradients is described. The numerical approach presented is based on the framework of cohesive zone models. Traction-separation laws are coupled to heat conduction across the cracks. An implementation of the model into a finite element framework is described. Three examples of application are discussed: (i) interface crack growth; (ii) crack bridging; (iii) application to photothermal imaging.
KeywordsHeat Flux Energy Release Rate Cohesive Zone Cohesive Strength Cohesive Zone Model
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