3-D constraint effects on fracture mechanics specimens
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2005
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INTERNATIONAL CONGRESS OF MECHANICAL ENGINEERING, 18th
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Resumo
The constraint is accepted as a measure of the triaxiality level at the crack-tip. Specimens with different a/W
ratios present variation on the stress field ahead of the crack-tip. A stress relaxation can occur depending on the a/W
values which is known as loss of constraint and has strong influence on the structural steels fracture toughness.
Different approaches have been proposed to quantify constraint and to describe the effects of constraint variations on
engineering fracture toughness characterized by J-integral, or equivalently the crack-tip opening displacement, CTOD.
This paper presents the results of a numerical investigation, in which single-edge cracked bars in three point bend
SE(B) and compact tension C(T) specimens, with different relative crack lengths, were systematically studied via
detailed three-dimensional finite element analyses. A new parameter is then proposed to quantify crack-tip constraint.
Como referenciar
RABELLO, E.G.; MATTAR NETO, M.; CRUZ, J.R.B.; GOMES, P.T.V. 3-D constraint effects on fracture mechanics specimens. In: INTERNATIONAL CONGRESS OF MECHANICAL ENGINEERING, 18th, November 6-11, 2005, Ouro Preto, MG. Proceedings... Disponível em: http://repositorio.ipen.br/handle/123456789/18333. Acesso em: 25 Jan 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.