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Incompressibility and Bulk Stress for Viscoelasticity

Submitted by shrimad on
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incompressibility
Bulk stress
poisson's ratio

Hi all,

 

I am performing compression on a viscoelastic material with relaxation only in shear and the bulk being nearly incompressible.

The relaxation times for shear are of the order of millisecons so shear stress is dissipated almost immediately at the end. But there are high stresses due to bulk part.

Help with curved specimen and mechanical loading

Submitted by tom_biomech on
research
Background:

Rib fractures in infants are highly suggestive of child abuse. I am performing mechanical testing and finite element analysis on pig ribs with the aim of characterising the behaviour of ribs under anterior-posterior (from end to end rather from the side) loading.



Help needed:


Large electric field induced strains in ferroelectric islands

Submitted by jzz108 on
research

An effective mechanism that generates large recoverable electric field induced strains in ferroelectric islands is studied by phase-field modeling. The large strains originate from the reversible 90° domain switching between a1 (a2) domains and c domains, driven by an applied electric field and an internal stress field. The electric field induced strains could be effectively controlled by the magnitude of island-substrate misfit and the aspect ratio of islands.

The paper could be download in the following link:

Multiscale method with model reduction

Submitted by Julien Yvonnet on
research
model reduction
multiscale methods
propper orthogonal decomposition

Model reduction based on Propper Orthogonal decomposition is widely used in Computational mechanics to reduce the number of degrees of freedom in systems. In the attached papers, we introduced a POD-based model reduction in a multiscale framework to significantly reduce the computations.

PhD at the University of Wisconsin-Milwaukee

Submitted by Dr. Michael No… on
job
PhD studies in tribology / contact mechanics

I am looking for a PhD student (RA) in Mechanical
Engineering to start in Sept. 2010. The topic is in modeling in tribology
(biomimetic surfaces, contact mechanics, adhesion). The initial support (RA) can be
provided via INSIC TAPE grant and other sources. Interested persons should send
their resume to me at nosonovs AT uwm.edu. The admission criteria for the PhD
degree can be found at http://www4.uwm.edu/ceas/current_students/graduate_students/index.cfm

A very basic doubt in Strength Of Materials

Submitted by ROHAN_SK on
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Hi Members,

                   This may seem a very basic or even stupid question to you all , but it still leaves me with a doubt regarding the concept behind the WHY and HOW of this. So however trivial this may seem Please bear wiith it and Help me Clearify my concept and getting the right idea.

Postdoctoral/PhD position

Submitted by Eran Bouchbinder on
job

A postdoctoral/PhD position in various non-equilibrium problems in solid mechanics is available at the Weizmann Institute of Science. Candidates should have a strong background in physics and/or theoretical mechanics, as well as experience with analytical and computational methods for solving partial differential equations. More details can be found in http://www.weizmann.ac.il/chemphys/bouchbinder/ For information about specific research projects, please send CV, a publications list and a statement of research interests to Dr.

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