Concept

Plane stress

Publications associées (102)

Equation of state, elasticity, and shear strength of pyrite under high pressure

Physical properties including the equation of state, elasticity, and shear strength of pyrite have been measured by a series of X-ray diffraction in diamond-anvil cells at pressures up to 50 GPa. A Birch-Murnaghan equation of state fit to the quasi hydrost ...

2002

Comportement mécanique des milieux granulaires sous sollicitations cycliques

Frédéric Mayoraz

The following work deals with the characterisation of the behaviour of road bases granular material, made of tunnel excavation material and loaded by passing vehicle axles. This granular media, don't correspond generally to the standards demanded for the c ...

EPFL2002

The influence of internal stresses on the microbond test II : Physical aging and adhesion

Yves Leterrier

The present work investigated the effects of physical aging on interfacial adhesion and internal stresses using single-fibre model composites. First, the stress state of the interface and its evolution upon aging were studied for the microbond geometry. Th ...

2002

Parameter identification method for a polycrystalline viscoplastic selfconsistent model based on analytical derivatives of the direct model equations

Roland Logé

An inverse method for automatic identification of the parameters involved in a polycrystalline viscoplastic selfconsistent (VPSC) model is presented. The parameters of the constitutive viscoplastic law at the single-crystal level, i.e. the critical resolve ...

2000

Time-cure-temperature superposition for the prediction of instantaneous viscoelastic properties during cure

Véronique Michaud, Paul Sunderland

The relative sequence of shrinkage and evolution of modulus of a thermoset resin during cure leads to the build-up of internal stresses, especially if the resin is constrained by the presence of other materials in the form of a substrate or reinforcing fib ...

2000

The fixation of the cemented femoral component - Effects of stem stiffness, cement thickness and roughness of the cement-bone surface

Lalaonirina Rakotomanana Ravelonarivo, Pierre-François Leyvraz

After cemented total hip arthroplasty (THA) there may be failure at either the cement-stem or the cement-bone interface. This results from the occurrence of abnormally high shear and compressive stresses within the cement and excessive relative micromoveme ...

2000

Strain rate effect on the mechanical behavior of the anterior cruciate ligament-bone complex

Dominique Pioletti, Lalaonirina Rakotomanana Ravelonarivo, Pierre-François Leyvraz

Traction tests were performed on the bovine anterior cruciate ligament-bone complex at seven strain rates (0.1, 1, 5, 10, 20, 30, 40%/s). Corresponding stress-strain curves showed that, for a given strain level, the stress increased with the augmentation o ...

1999

Fatigue failure of thin wire-electrodischarge-machined flexure hinges

Reymond Clavel, Simon Nessim Henein

This paper inquires into the exportability of the fatigue measurements made on standard test-specimen to wire electro- discharge machined flexures with thin cross sections (50 micrometers ). It describes the results of a set of fatigue measurements made on ...

1999

A model for geometric and mechanical adaptation of arteries to sustained hypertension

Nikolaos Stergiopoulos, Jean-Jacques Meister

This study aimed to model phenomenologically the dynamics of arterial wall remodeling under hypertensive conditions. Sustained hypertension was simulated by a step increase in blood pressure. The arterial wall was considered to be a thick-walled tube made ...

American Society of Mechanical Engineers1998

Residual strain effects on the stress field in a thick wall finite element model of the human carotid bifurcation

Nikolaos Stergiopoulos, Jean-Jacques Meister

A three-dimensional finite element model of the carotid artery bifurcation was constructed in order to determine the stress field and assess the modification of the stress field when residual strain is taken into account. Residual strain in the carotid bif ...

1997

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