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Publications associées (35)

Fatigue analysis of liquid-storage tank shell-to-base connections under multi-axial loading

During severe seismic events the base of unanchored steel liquid-storage tanks can uplift, causing large inelastic rotation demands at the shell-to-base connections and large multi-axial stresses (radial tension and circumferential compression) in the tank ...

Elsevier2012

Toward a microscopic description of flow near the jamming threshold

Matthieu Wyart

We study the relationship between microscopic structure and viscosity in non-Brownian suspensions. We argue that the formation and opening of contacts between particles in flow effectively leads to a negative selection of the contacts carrying weak forces. ...

EDP Sciences2012

Punching of Flat Slabs with Large Amounts of Shear Reinforcement

Stefan Lips

Punching shear reinforcement is an efficient method to increase not only the strength but also the deformation capacity of flat slabs supported by columns. Especially, the increase in deformation capacity is desired so that the load can be distributed to o ...

EPFL2012

Modeling and Simulation of Energy Efficient Milling Process Plans for Prismatic Parts

Nenad Nesic

The milling process has been continuously optimized from many aspects: forces, velocities, stability, quality. Numerous papers have been published that report results in the domain of toolpath optimization with criteria such as raising the quality of the m ...

EPFL2012

High-angular-range electrostatic rotary stepper micromotors fabricated with SOI technology

Martinus Gijs, Christophe Yamahata, Marc Stranczl

Flexible bearings are advantageous for microelectromechanical systems as they enable precise, accurate, repeatable, and reliable motion without frictional contact. Based on the principle of a rotary folded-beam suspension, we have designed, fabricated, mod ...

Institute of Electrical and Electronics Engineers2012

Theoretical and Experimental Study of a Thermally Driven Heat Pump Based on a Double Organic Rankine Cycle

Jonathan Demierre

Nowadays, one of the main alternatives for a more rational use of energy in heating applications is the heat pumping technologies. The market is dominated by two kinds of heat pump systems: the electrically driven vapor compression heat pumps (EHP), which ...

EPFL2012

Fatigue analysis of unanchored steel liquid storage tank shell-to-base connections during earthquake induced uplift

Alain Nussbaumer, Gary Scott Prinz, Gustavo Cortes

During severe seismic events the base of unanchored steel liquid-storage tanks can uplift, causing large inelastic rotation demands at the shell-to-base connections. With repeated cycles of uplift, these shell-to-base connections are susceptible to low-cyc ...

2012

Modal Identification and Modeling of Bearings for Very High-Speed Rotors

Grégoire Dormond

Rotor-bearing systems take an important place in engineering applications and are used in many industrial systems: gas turbines, compressors, jet engines, machine-tool spindles, etc. The spindle is an essential component of manufacturing systems involving ...

EPFL2010

On the upper part load vortex rope in Francis turbine: Experimental investigation

François Avellan, Christophe Nicolet, Pierre Maruzewski, Amirreza Zobeiri

The swirling flow developing in Francis turbine draft tube under part load operation leads to pressure fluctuations usually in the range of 0.2 to 0.4 times the runner rotational frequency resulting from the so-called vortex breakdown. For low cavitation n ...

International Association For Hydraulic Research2010

Influence of Shear on Rotation Capacity of Reinforced Concrete Members Without Shear Reinforcement

Aurelio Muttoni, Miguel Fernández Ruiz, Rui Vaz Rodrigues

The influence of shear on the rotation capacity of one-way slabs without shear reinforcement is investigated in this paper by means of an experimental study. The experimental program consisted of 11 slab strips 8400 mm (331 in.) long and 450 mm (17.7 in.) ...

ACI Structural Journal2010

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