Non-Local Analysis of Forming Limits of Ductile Material Considering Damage Growth

Autor:	Sungyeun Won, Young-Suk Kim
Rok vydání:	2003
Předmět:	Yield (engineering) Materials science Quantitative Biology::Neurons and Cognition Characteristic length Mechanical Engineering Local plasticity Mechanics Plasticity Non local Condensed Matter::Materials Science Rock mass plasticity Hardening (metallurgy) Composite material Laplace operator
Zdroj:	Transactions of the Korean Society of Mechanical Engineers A. 27:914-922
ISSN:	1226-4873
DOI:	10.3795/ksme-a.2003.27.6.914
Popis:	In this paper, the strain localization of voided ductile material has been analyzed by nonlocal plasticity formulation in which the yield strength not only depends on an equivalent plastic strain measure (hardening parameter), but also on the Laplacian thereof. The gradient terms in yield criterion show an important role on modeling strain-softening phenomena of material. The influence of the mesh size on the elastic -plastic deformation behavior and the effect of the characteristic length parameter for localization prediction are also investigated. The proposed nonlocal plasticity shows that the load -strain curves converge to one curve. Results using nonlocal plasticity also exhibit the dependence of mesh size is much less sensitivity than that for a corresponding local plasticity formulation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6d0e8d0f9cdf1fb82e084deeb4603627 https://doi.org/10.3795/ksme-a.2003.27.6.914 Zobrazit plný text záznamu