Strong embedded discontinuities for simulating fracture in quasi-brittle materials [PDF]
In this paper embedded strong discontinuities are used to model discrete cracking in materials like concrete. In the approach followed a discontinuous displacement field is considered and the deformation is localized at a surface of zero width.
core +9 more sources
Perturbation of mode III interfacial cracks [PDF]
We consider the perturbation problem of a Mode III interfacial crack. The perturbation is of geometrical type and can be both perturbation of the crack faces and perturbation of the interface, which can deviate from the initial straight line configuration.
Piccolroaz, A, Mishuris, G, Movchan, AB
openaire +4 more sources
Mode Localization of a Cracked Blade-Disks [PDF]
In this paper, the effect of blade crack on the mode localization of a rotating blade-disk is studied. Pretwisted taper beams are used to simulate blades of a blade-disk. The crack on the blade can be regarded as a local disorder of this periodically coupled blades system.
J. H. Kuang, B. W. Huang
openaire +1 more source
Crack kinking at the tip of a mode I crack in an orthotropic solid [PDF]
The competition between crack penetration and crack kinking is addressed for a mode I macroscopic crack in an orthotropic elastic solid. Cohesive zones of finite peak strength and finite toughness are placed directly ahead of and orthogonal to the plane of the parent crack.
Tankasala, Harika C +2 more
openaire +2 more sources
Mixed Mode Crack Propagation in Iliac Bone [PDF]
Abstract Bone is a complex material that can be regarded as an anisotropic elastic composite material. The problem of crack propagation in human bone is analyzed by using a generalization of the maximum tensile stress criterion (MTS). The results concern the critical stress for crack propagation and the direction of the crack path in ...
Baesu, E. +3 more
openaire +2 more sources
A numerical study of crack shielding and deflection under extensive plasticity [PDF]
Experimentally observed crack deflection events in multi-layered material systems, occurring even under pure mode-I loading, are here simulated and explained through elasto-plastic finite element modelling.
Reed, Philippa A.S. +2 more
core +1 more source
The Effect of Temperature and Heating–Cooling Cycles on Mode I, Mode II and Mixed-Mode I-II Fracture Toughness of Sandstone [PDF]
In the case of explosions and fires, the rocks undergo a cycle of heating and cooling. For that, first, they are exposed to considerable heat and then cooled after extinguishing the fire.
Sh. Latifi, M. Hosseini, M. Mahdikhani
doaj +1 more source
Crack detection of a beam-like bridge using 3D mode shapes
In this paper, mode shapes of a 3D cracked beam with a rectangular cross section are analyzed for crack detection. The influence of coupling mechanism between horizontal and vertical bending vibrations due to the 3D crack model on the mode shapes is ...
Nguyen Viet Khoa
doaj +1 more source
Effects of stitching on delamination of satin weave carbon-epoxy laminates under mode I, mode II and mixed-mode I/II loadings [PDF]
The objective of the present study is to characterize the effect of modified chain stitching on the delamination growth under mixed-mode I/II loading conditions.
Trabelsi, Walid +2 more
core +1 more source
On the connection between mode II and mode III effective thresholds in metals [PDF]
Closure-free long cracks under the remote mode III loading grow in a more complicated way than those under the remote mode II. For bcc metals, a coplanar in-plane spreading of tongues driven by the local mode II loading components at crack-front ...
Tomas Vojtek +2 more
doaj +2 more sources

