Delamination is an important concern in the context of structural behaviour of laminated composite materials. It is known that delamination can diminish the stiffness and the strength of the material and promote structural failure. Delamination onset and growth is governed by interlaminar fracture toughness of the material. Delamination propagation is frequently dominated by mode II fracture; c...

Abstract. This work proposes a new FE model to predict dynamic crack propagation mechanisms in quasi-brittle materials. The numerical strategy uses Moving Mesh (MM) technique consistent with the Arbitrary Lagrangian-Eulerian (ALE) formulation reproduce variation of geometry computational domain caused by dynamically growing cracks. Specifically, motion mesh nodes takes place consistently condit...

The purpose of this paper is to investigate the application of a combined finite-discrete element program, such as ELFEN, for the simulation and prediction of backfill stope failure risks due to blast loading effects in underground mines. A real size of a backfilled stope blasted in the nearby rock of the paste fill is modelled. The dynamic fracture propagation and fragmentation in rock and the...

abstract we report a 71 year-old patient with intertrochanteric fracture who had been managed with dhs and her healed fracture complicated by a subcapital femoral neck fracture. a subcapital femoral neck fracture complicating a healed intertrochanteric fracture is rare but catastrophic event. such cases are managed in a hetereogenous manner, i.e. there exists a mixture of cases treated by eithe...

The experiments on dynamic crack propagation in PMMA (polymethyl methacrylate) and in soda lime glass conducted by Fineberg and Sharon (see [1-2] and quoted references) during the last decade pointed out some characteristic features of the microbranching instability in brittle materials. They observed the existence of a critical velocity for the onset of the microbranching; described the relati...

Crack propagation modeling in quasi-brittle materials such as concrete is essential for improving the reliability and load-bearing capacity assessment. Crack propagation explains many failure characteristics of concrete structures using the fracture mechanics approach. This approach could better explain the softening behavior of concrete structures. A great effort has been made in developing nu...

Double network (DN) gels, consisting of two contrasting interpenetrated polymer networks, exhibit large resistances to crack initiation and propagation. For practical applications, materials in highly stretched states are important. In this study, we investigated the growth behaviors DN gels by inducing seeds into these under various degrees tension. This examination enables analysis propagatio...

Instabilities in snow slopes generally involve the progressive fracture along a weak snowpack layer. Recent field observations on fractures in weak layers have shown that this process results vertical displacement due to crushing of the weak layer. Long beam specimens containing a natural weak layer were used to study the propagation of fracture. Multiple black markers were inserted in the snow...