Articles techniques et présentations

The formulation of bimodular stress field is based on stress dependent elasticity and the simulations have been carried out using commercial finite element software COMSOL Multiphysics® software. The complexity of the problem is enhanced due to adding bimodular stress field in the ... En savoir plus

Piping is a kind of internal erosion that occurs under water retaining structures lying on a sandy soil. In an attempt to reproduce the growth of erosion channels in sand, a small scale physical model has been set up in the laboratory and a finite element model that reproduces the ... En savoir plus

Ultra-thin flexible glass with thicknesses of 100 µm or below is bendable and has superior surface properties (Figure 1). The current use in foldable displays of mobile devices gives an idea of the range of possible applications [1]. However, it requires dedicated handling and processing ... En savoir plus

Making a diameter of needle small is effective for reducing the pain of patients. However, thinning a needle leads to easy buckling in the puncturing process, because the aspect ratio of needle becomes high. We propose a method for avoiding buckling of thin needle by setting a guide ... En savoir plus

Knowledge on flow behavior in fractured reservoir rocks is of great interest in petroleum engineering as well as for geothermal assets. Due to the big difference of magnitude (fracture aperture: ~?m, lateral extension of reservoirs ~km), modeling of discrete fracture flow is not ... En savoir plus

In tight gas formations where the low matrix permeability prevents successful and economic production rates, hydraulic fracturing is required to produce a well at economic rates. As production from the well and its initial fracture declines, re-fracturing treatments are required to ... En savoir plus

Spondylolysis (SL) is a defect of the spinal vertebra, and is typically caused by stress fracture of the pars interarticularis bone of the vertebral arch. It is especially common in adolescents who over train in sporting activities. Spina bifida occulta (SBO) is a malformation of the ... En savoir plus

A comparison of discrete fracture and explicit fracture models for single-phase flow in fractured porous media using COMSOL Multiphysics® software is presented to understand the contribution of each individual fracture to fluid flow, and the exchange between fracture and surrounding ... En savoir plus

Circuit board failures are often ignored because they could be impreceptible. This simulation examines how internal layers around a soldered pin via subject to temperature changes during the soldering process are affected, show the forces involved and determine breaking points. A 2D ... En savoir plus

Porous guided bone regeneration (GBR) meshes are used in dentistry as a mechanical barrier to separate and protect the area of bone loss, providing space for new bone growth. An appropriate pore size can play a role, as important as its space-maintaining properties. The characteristics ... En savoir plus