In this paper an approach that is able to derive the flexibility parameters in curved beams with an edge crack based on the strain energy density theory is presented. The method takes into account that the crack in a beam does not propagate in a collinear manner, but due to the presence of the mixed mode, it changes its direction. This allows a description of the phenomenon of the propagation of the crack similar to the experimental evidence. The crack is assumed to be radial before the loading, then it runs in the direction of the minimum of the strain energy density. Then, the crack is supposed to follow the direction of the principal tensile stress in the section. Preliminary results are presented for different position and initial length of the crack.
L.Nobile, C.Gentilini (2010). On the evaluation of the flexibility parameters of cracked curved beams based on the Strain Energy Density Theory. TAIPEI : National Taiwan University of Science & Technology.
On the evaluation of the flexibility parameters of cracked curved beams based on the Strain Energy Density Theory
NOBILE, LUCIO;GENTILINI, CRISTINA
2010
Abstract
In this paper an approach that is able to derive the flexibility parameters in curved beams with an edge crack based on the strain energy density theory is presented. The method takes into account that the crack in a beam does not propagate in a collinear manner, but due to the presence of the mixed mode, it changes its direction. This allows a description of the phenomenon of the propagation of the crack similar to the experimental evidence. The crack is assumed to be radial before the loading, then it runs in the direction of the minimum of the strain energy density. Then, the crack is supposed to follow the direction of the principal tensile stress in the section. Preliminary results are presented for different position and initial length of the crack.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
