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H. Askes+, J. Pamin# and R. de Borst+

+Koiter Institute Delft, Delft University of Technology, Delft, The Netherlands
#Institute of Computer Methods in Civil Engineering, Cracow University of Technology, Krakow, Poland

doi:10.4203/ccp.67.2.1

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H. Askes, J. Pamin, R. de Borst, "An EFG Implementation of a Gradient-Enhanced Damage Model", in B.H.V. Topping, (Editor), "Computational Techniques for Materials, Composites and Composite Structures", Civil-Comp Press, Edinburgh, UK, pp 137-145, 2000. doi:10.4203/ccp.67.2.1

Abstract

Different gradient-enhanced damage formulations are derived and compared. Also the underlying nonlocal damage model is taken into consideration. For the analytical comparisons an analysis of dispersive waves is performed. The Element-Free Galerkin (EFG) method is used for a numerical comparison of the various models. EFG shape functions are easily formulated with an infinite order of continuity, so that different gradient-enhanced models can be compared in a straightforward manner. The discretisation aspects and the consistent linearisation are discussed. Two benchmark tests are considered. It is found that the so-called second-order implicit model is the preferred option from a physical, numerical and implementational point of view.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 67 COMPUTATIONAL TECHNIQUES FOR MATERIALS, COMPOSITES AND COMPOSITE STRUCTURES Edited by: B.H.V. Topping Paper II.1 An EFG Implementation of a Gradient-Enhanced Damage Model H. Askes+, J. Pamin# and R. de Borst+ +Koiter Institute Delft, Delft University of Technology, Delft, The Netherlands #Institute of Computer Methods in Civil Engineering, Cracow University of Technology, Krakow, Poland doi:10.4203/ccp.67.2.1 purchase the full-text of this paper Full Bibliographic Reference for this paper H. Askes, J. Pamin, R. de Borst, "An EFG Implementation of a Gradient-Enhanced Damage Model", in B.H.V. Topping, (Editor), "Computational Techniques for Materials, Composites and Composite Structures", Civil-Comp Press, Edinburgh, UK, pp 137-145, 2000. doi:10.4203/ccp.67.2.1 Abstract Different gradient-enhanced damage formulations are derived and compared. Also the underlying nonlocal damage model is taken into consideration. For the analytical comparisons an analysis of dispersive waves is performed. The Element-Free Galerkin (EFG) method is used for a numerical comparison of the various models. EFG shape functions are easily formulated with an infinite order of continuity, so that different gradient-enhanced models can be compared in a straightforward manner. The discretisation aspects and the consistent linearisation are discussed. Two benchmark tests are considered. It is found that the so-called second-order implicit model is the preferred option from a physical, numerical and implementational point of view. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £92 +P&P)
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