Fracture Mode Separation for Delamination in Platelike Composite Structures

Autor:	Z. Yang, C.T. Sun, John T. Wang
Rok vydání:	2000
Předmět:	Strain energy release rate Cantilever Materials science business.industry Traction (engineering) Aerospace Engineering Structural engineering Composite laminates Finite element method Plate theory Mode coupling Composite material business Stress intensity factor
Zdroj:	AIAA Journal. 38:868-874
ISSN:	1533-385X 0001-1452
DOI:	10.2514/2.1041
Popis:	A computationally efficient approach combining a plate crack-tip element model and a mixed-mode separation technique was developed to calculate mode mixities and stress intensity factors for delamination in platelike composite structures. The crack-tip element was based on classical plate theory, assuming the delamination surfaces to be traction free. Fracture mode separation was achieved by equating the total strain energy release rate from classical plate theory with that from the three-dimensional near-tip solution, along with two supplementary finite element analyses for special loadings. Using this approach, the separation of fracture modes under any other load combinations can easily be carried out. Numerical results showed that the present method gives good evaluations of the mixed-mode stress intensity factors.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::12356ae74f88157da50fb175baa1c577 https://doi.org/10.2514/2.1041 Zobrazit plný text záznamu