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Article: Turbulence-induced vibration in annular flow of a rigid cylinder mounted on a cantilever beam

Submitted by lagrangr on
research
Fluid Structure Interaction
fluid-elastic instability

This study investigates the fluid–structure interaction of two coaxial cylinders separated by a Newtonian fluid under turbulent axial flow. The theoretical framework treats the inner cylinder as a rigid body mounted on a flexible blade modeled as a Rayleigh beam. The goals of this study are to determine the free vibration modes and frequencies, identify the fluid-elastic instability threshold, and establish an analytical expression for the mean-square displacement of the structure.

Nonlinear Cauchy Elasticity

Submitted by arash_yavari on
research
Cauchy elasticity
Green elasticity
hyper-elasticity
Nonlinear elasticity
linear elasticity
odd elasticity
Most theories and applications of elasticity rely on an energy function that depends on the strains from which the stresses can be derived. This is the traditional setting of Green elasticity, also known as hyper-elasticity. However, in its original form the theory of elasticity does not assume the existence of a strain energy function. In this case, called Cauchy elasticity, stresses are directly related to the strains. Since the emergence of modern elasticity in the 1940s, research on Cauchy elasticity has been relatively limited.

Junior Professorship in Multiphase flow heat and mass transfer

Submitted by hnaceur on
job
Junior Professorship
Multiphase flow
mass transfer
phase change
heat transfer
Thermal Engineering
Energy efficiency

The Polytechnic University of Hauts-de-France (https://www.uphf.fr) is offering a junior professorship in Multiphase flow heat and mass transfer with phase change.

Associate Professor Position in the field of Design and Manufacturing at Aarhus University

Submitted by info@signatur.dk on
job
associate professor
Aarhus University
Denmark
mechanical engineering
design
manufacturing

The Department of Mechanical and Production Engineering (MPE) at Aarhus University is consolidating its research and teaching activities within the field of Design and Manufacturing and invites applications for Associate Professor within the Section of Design and Manufacturing.

Discussion of fracture paper #44 - Flexo & piezoelectric effects and cracks

Submitted by ESIS on
research

The Curie brothers, Pierre and Jacques, discovered the piezoelectric effect in 1880. The phenomenon has been exploited in many useful applications, such as for the pickup on the gramophone that registers the sound when it follows the winding groove in the vinyl record surface. It is also used in lighters that ignite a gas when the voltage gap between different locations exceeds the limit to produce a spark. When things are made smaller and smaller, passing mm's, microns down to nano scales, the piezoelectric effect is surpassed by the flexoelectric effect.

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