Concept

Tenseur des contraintes

Publications associées (718)

Stress fields for the interaction of in-plane and out-of-plane forces in reinforced concrete shell elements

Plane reinforced concrete (RC) elements are used in a large variety of structures. Their principal function is to carry forces that act in the plane of the element, but external actions and connections to other structural elements generally introduce addit ...

EPFL2017

Development of a consistent approach for design and assessment of structural concrete members using stress fields and strut-and-tie models

Filip Niketic

Designing new concrete members and assessing the strength of existing elements subjected to in-plane stress state conditions is often conducted by means of Stress Fields (SF) and Strut-and-Tie Models (STM). These methods are usually accounting for identica ...

EPFL2017

Impacts of Thermally Induced Stresses on Fracture Stability During Geological Storage of CO2

Lyesse Laloui, Victor Vilarrasa Riano

Geomechanical stability issues may arise due to induced thermal stresses because CO2 will generally reach the storage formation at a temperature lower than that of the reservoir. Cold injection will form a cold region around the injection well, which will ...

Elsevier2017

Multiphysical behaviour of shales from Northern Switzerland

Valentina Favero

Shales are involved in energy-related applications such as the extraction of shale gas, the CO2 storage and the nuclear waste disposal. In these contexts, fundamental issues come along with the multiphysical conditions in which shales are found, where mech ...

EPFL2017

Very-High-Speed Permanent Magnet Motors: Mechanical Rotor Stresses Analytical Model

Yves Perriard, Douglas Martins Araujo, Guillaume Paul-André Burnand

In the context of the development of a 500’000 rpm miniaturized permanent magnet motor, a 3D analytical model for the assessment of mechanical stresses is presented. The significant mechanical stresses and thermal constraints encountered at such speeds are ...

2017

Development of anchorage systems for strengthening of steel plates with iron-based shape memory alloy strips

Ardalan Hosseini, Masoud Motavalli, Elyas Ghafoori

The aim of this study is to propose a series of mechanical anchorage system for strengthening of steel plates with iron-based shape memory (Fe-SMA) strips. Four different friction-based mechanical clamps to anchor the Fe-SMA strips to the steel substrate w ...

2017

Two-dimensional analytical stress distribution model for unbalanced FRP composite single-lap joints

Thomas Keller, Anastasios Vassilopoulos, Zhengwen Jiang

A two-dimensional analytical stress distribution model taking into account the effects of large deformation, bending-tension coupling and interfacial compliance on the quasi-static behavior of unbalanced FRP composite single-lap joints (SLJs) under tension ...

Elsevier2017

Influence of geometrical imperfections and flaws at welds of steel liners on fatigue behavior of pressure tunnels and shafts in anisotropic rock

Alexandre Jean Pachoud

High-head steel lined pressure tunnels and shafts may be considered as critical infrastructures especially when rock overburden is small. In the case of lining failure, catastrophic damages can occur when a large amount of water can reach the steep valley ...

EPFL-LCH2017

From rock to magma and back again: The evolution of temperature and deformation mechanism in conduit margin zones

Marie Estelle Solange Violay, Michael Heap

Explosive silicic volcanism is driven by gas overpressure in systems that are inefficient at outgassing. The zone at the margin of a volcanic conduit-thought to play an important role in the outgassing of magma and therefore pore pressure changes and explo ...

Elsevier2017

Stresses and Strains in Cruciform Samples Deformed in Tension

Helena Van Swygenhoven, Steven Van Petegem

The stress and strain relationship in the gauge region of six cruciform geometries is studied: the ISO standard geometry with slits in arms, two geometries with thinned gauge areas, two geometries with thinned gauge areas and slits in arms, and one modifie ...

Springer2017

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