Coupled space-time multiscale simulations of dynamic delamination tests

• Autorzy: Mariani S. , Pandolfi A. , Pavani R.
• Konferencja: E-MRS 2004 Fall Meeting Warsaw, Poland , 6-10 September,2004
• Języki publikacji: EN

Abstrakty

EN

The aim of this work was to numerically investigate the dynamic debonding of a thin composite laminate from a rigid substrate. The laminate is elastic and the separation surface behaviour is governed by a cohesive softening law. By way of simplification, the bending dominated deflection of the free part of the laminate is described through the Euler - Bernoulli kinematics. In this context, the partial differential equation governing the laminate motion is characterized by two length scales and two time scales. To accurately simulate the growth of delamination, a coupled space-time multiscale integration was used. The qualifying features of such an approach are: i) a fine spatial discretization across the process zone, where the evolution of the cohesive tractions demands a detailed description; ii) a high order accurate time integration algorithm, capable of damping spurious high frequency oscillations of the solution. The results of a two-stage peel test testify to the good performance of the approach applied.

Słowa kluczowe

EN

non-linear dynamic fracture mechanics; delamination; heterogeneous multiscale method

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2005
• Tom: Vol. 23, No. 2
• Strony: 509--519
• Opis fizyczny: Bibliogr. 12 poz.

Twórcy

autor

Mariani S.

• Dipartimento di Ingegneria Strutturale, Politecnico di Milano, Milano, Italy

autor

Pandolfi A.

• Dipartimento di Ingegneria Strutturale, Politecnico di Milano, Milano, Italy

autor

Pavani R.

• Dipartimento di Matematica ''Francesco Brioschi'', Politecnico di Milano, Milano, Italy

Bibliografia

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