A pseudo-transient solution strategy for the analysis of delamination by means of interface elements
Data(s) |
01/05/2006
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Resumo |
<p>Recent efforts in the finite element modelling of delamination have concentrated on the development of cohesive interface elements. These are characterised by a bilinear constitutive law, where there is an initial high positive stiffness until a threshold stress level is reached, followed by a negative tangent stiffness representing softening (or damage evolution). Complete decohesion occurs when the amount of work done per unit area of crack surface is equal to a critical strain energy release rate. It is difficult to achieve a stable, oscillation-free solution beyond the onset of damage, using standard implicit quasi-static methods, unless a very refined mesh is used. In the present paper, a new solution strategy is proposed based on a pseudo-transient formulation and demonstrated through the modelling of a double cantilever beam undergoing Mode I delamination. A detailed analysis into the sensitivity of the user-defined parameters is also presented. Comparisons with other published solutions using a quasi-static formulation show that the pseudo-transient formulation gives improved accuracy and oscillation-free results with coarser meshes</p> |
Identificador | |
Idioma(s) |
eng |
Direitos |
info:eu-repo/semantics/restrictedAccess |
Fonte |
Tenchev , R T & Falzon , B G 2006 , ' A pseudo-transient solution strategy for the analysis of delamination by means of interface elements ' Finite Elements in Analysis and Design , vol 42 , no. 8-9 , pp. 698-708 . DOI: 10.1016/j.finel.2005.10.006 |
Palavras-Chave | #/dk/atira/pure/subjectarea/asjc/1700/1706 #Computer Science Applications #/dk/atira/pure/subjectarea/asjc/2200/2206 #Computational Mechanics |
Tipo |
article |