Bruchmechanische Untersuchung geschichteter Piezoelektrika unter dynamischer Belastung mit Hilfe von Randelementmethoden

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The proposal is motivated by the dynamic fracture processes evaluation in piezoelectric materials (PEM) with consideration of the coupled mechanical and electric effects. This analyze will be in help to improve the perfomance and to predict the reliable service lifetime of piezoelectric components. The aim of the proposal is a creation of an efficient BIEM numerical tool for solution of 2D electromechanical-coupled dynamic problem for a finite cracked multilayered piezoeletric body. The solution method is the extended BIEM for the coupled electromechanical dynamic problem. The accuracy of the proposed method will be studied by a solution of appropriate test examples. The crack-tip modeling and calculation of the extended SIF will be done. Parametric study results revealing the sensitivity of the extended fracture field on the dynamic parameters of the different time-harmonic and transient coupled loads will be obtained.