Modelling & Simulation

Poster

Modelling of damage and fracture behaviour in nanostructred laminates

Shahed Rezaei, Institute of Applied Mechanics / RWTH Aachen University, Aachen, Germany
Stephan Wulfinghoff, Institute of Applied Mechanics / RWTH Aachen University, Aachen, Germany
Stefanie Reese, Institute of Applied Mechanics / RWTH Aachen University, Aachen, Germany

Different tools and elements from high-tech industries to our daily life need to be coated in order to have satisfactory lifetime and degradation resistance. There are of course various methods to apply these coatings. New techniques like high-power impulse magnetron sputtering (HPPMS) provide more parameters to control the deposition process. The HPPMS technique provides more flexibility to produce desired coating layers with optimized properties for required application. By using cohesive zone element technique (CZ) as well as a proper continuum damage model, a powerful numerical model has been developed in order to predict the damage behaviour and crack propagation in the coating system. Various numerical studies reveal the most effective parameters in order to produce stronger coatings. These parameters could be summarized as grain morphology, elastic and plastic properties, and eigenstresses.

« back