Blog posts

A model for conditional polarization of the actuation enhancement of a dielectric elastomer

Submitted by Bo Li on Mon, 10/24/2011 - 11:00

research

electromechanical instability

dielectric elastomer

polarization

mechanical constrains

dielectric constant

How to estimate crack growth propagation using the maximum tangential stress criterion method?

Submitted by Abdulmajid 12345 on Mon, 10/24/2011 - 10:29

Hi All Currently I am running FE modelling using linear elastic fracture mechanics approach to estimate crack growth propagation in a web plate of box girder in an existing bridge deck. The FE model includes 3D solid element. The crack growth direction is expected to follow in a plan perpendicular to the maximum principal stress. As I know there are many methods can be used to estimate the direction of crack during propagation. My question is about the maximum tangential stress criterion method.

WCCM 2012: Minisymposium on Cohesive Zone Models - Fundamentals and Multiscale Applications

Submitted by Kyoungsoo Park on Mon, 10/24/2011 - 10:15

conference

I am co-organizing a mini-symposium on Cohesive Zone Models –
Fundamentals and Multiscale Applications (MS-139) in
the World Congress on Computational Mechanics (WCCM 2012) with Dr.
Glaucio H. Paulino at the University of Illinois at
Urbana-Champaign. We welcome papers that present theory and
applications of cohesive zone models at any length and time scales,
from atomistic and molecular to microstructural and phenomenological
models. Please, see the attached PDF for more detail of the
mini-symposium.

Nonlinear flow-induced vibration of a SWCNT with a geometrical imperfection

Submitted by Payam Soltani on Sun, 10/23/2011 - 06:07

research

nanomechanics

Abstract

Tensile stress of the concrete

Submitted by mahmood seraji on Sun, 10/23/2011 - 02:35

research

Tensile stress; concrete

Dear friends

The obtained results from my model show that the ultimate load is higher
than the expected one. after checking the results, I found out that the
tensile stress of concrete is much higher than input value for the
tensile yield stress. "concrete damaged plasticity model" is applied.

your help is highly appreciated.

On the effect of Lüders bands on the bending of steel tubes

Submitted by Julian Hallai on Sun, 10/23/2011 - 02:01

Propagating Instabilities

What is the best method now to solve advection equation?

Submitted by xiashengxu on Sat, 10/22/2011 - 19:17

research

I am solving the advection equation which is hyperbolic. Some basic techniques (shown on the page http://www.cse.illinois.edu/iem/pde/discadvc/) are either of large oscillation or numerical diffusion.

I am striving to find a method without or with little of these problems. Or is there any post correction method to use?

Thank you all!

Czech Society of Mechanics Institutes Z.P. Bazant Prize for Engineering Mechanics

Submitted by Horacio Espinosa on Sat, 10/22/2011 - 15:49

research

Czech Society of Mechanics Institutes Z.P. Bazant Prize for Engineering Mechanics

The Czech Society of Mechanics, Prague, has instituted the Z.P. Bazant Prize for Engineering Mechanics,
in honor of Prof. Zdenek P. Bazant, the McCormick Professor and Walter
P. Murphy Professor Of Civil Engineering And Materials Science. The selection
committee is composed of members from the Czech Technical University
and the Czech Academy of Sciences. The Prize is to be given annually.

Empirical observations of temperature

Submitted by Zhigang Suo on Sat, 10/22/2011 - 15:22

I have divided the old notes on temperature into three parts:

Principle of the conservation of energy
Empirical observations of temperature (this part)
Energy and fundamental postulate

Our feeling of hotness comes from everyday experiences. These experiences indicate that many levels of hotness exist, and that all levels of hotness can be mapped to a real variable.