User login

Davide Bigoni's picture

Stress concentration near stiff inclusions

Do singular stress fields exist close to rigid corners?

See the photoelastic investigation at http://www.ing.unitn.it/~bigoni/stiffener.html

Acta Mechanica Sinica, Vol.30, Issue 3, 2014 is online now!

Dear everyone!

The third issue in 2014 (Volume 30, Issue 3) of Acta Mechanica Sinica (AMS) is now online.

Welcome to this SCI-indexed journal http://ams.cstam.org.cn for rapid publication of your exciting results.

_______________________________________________________________________________

Phase-field modeling and simulation of fracture in brittle materials with strongly anisotropic surface energy

Crack propagation in brittle materials with anisotropic surface energy is important in applications involving
single crystals, extruded polymers, or geological and organic materials. Furthermore, when this anisotropy
is strong, the phenomenology of crack propagation becomes very rich, with forbidden crack propagation
directions or complex sawtooth crack patterns. This problem interrogates fundamental issues in fracture
mechanics, including the principles behind the selection of crack direction. Here, we propose a variational

Workshop on Microfluidics : Nanofluidics : Multiscale CFD, Registration deadline extended

Please join us for a national workshop on Microfluidics and Nanofluidics near Delhi, India during 14-16 July 2014. We are happy to have some higly accomplished academician in multiscale CFD domain. Prof. Suman Chakraborty, Bhatnagar Awardee 2013 will be principal instructor and speaker in the event.

http://www.iitkgp.ac.in/fac-profiles/showprofile.php?empcode=bTmVW

VAL2015 conference on Variable Amplitude Loading - Abstract submission system opened

Dear iMechanician

We are preparing everything necessary to host the 3rd International Conference on Material and Component Performance under Variable Amplitude Loading (VAL 2015) in Prague, Czech Republic in March 23-26, 2015. From now on, you can register your abstracts in the online
submission system
. The system will stay open till July 7, 2014, so do not forget to insert your abstract in time.

Stress Recovery in XFEM

Hello all,

I am new to imechanica so pls forgive me if I make a mistake.

I have a coplue of doubts while recovering stresses from XFEM.

My problem statement has an inclusion with some eigen strain, embedded in  an infinite matrix. I have solved the problem for displacements using XFEM. I need to get the stresses at a point close to the interface.

New introductory course in structural mechanics opens on edX

2.01x: Elements of Structures is a new introductory course in structural mechanics that just started on edX. Anybody can  register  to audit the course for free. 

Course material includes lecture videos, tutorials, example problems, recitation problems with video walkthrough, homework problems, "boardnotes" (condensed lecture notes) and synoptic tables.

Amit Pandey's picture

TMS- 2015 CALL FOR ABSTRACT (Symposium on HIGH TEMPERATURE SYSTEMS FOR ENERGY CONVERSION AND STORAGE)

HIGH
TEMPERATURE SYSTEMS FOR ENERGY CONVERSION AND STORAGE

 

TMS Division: Functional Material Division (FMD
formerly known as EMPMD)

FMD sub-committee: Energy Conversion and Storage

 

Organizers:

Solution of Post-Buckling& Limit Load Problems, Without Inverting the Tangent Stiffness Matrix& Without Using Arc-Length Methods

Solution of Post-Buckling & Limit Load Problems, Without Inverting the Tangent Stiffness Matrix & Without Using Arc-Length Methods

by T.A. Elgohary, L. Dong, J.L. Junkins and S.N. Atluri

The paper can be downloaded freely at:

http://www.care.eng.uci.edu/pdf/Dong2014.pdf

Homogenization - If materials in the model are isotropic, is it possible to get truly anisotropic resulting material?

Hello,

I read that "In general, even if the materials on the micro-level are isotropic, the effective 

material can show anisotropic behavior. A general anisotropic linear elastic material 

may have twenty one independent material parameters.''

 

If I understand my results correctly then simple structures like ''ball in the unit cell'' result in orthotropic material.

I am a bit puzzled - what would be the simplest structure that would result in anisotropic material behaviour?

What is mandel stress?

Choose a channel featured in the header of iMechanica: 
Free Tags: 

 Dear all,

 Sometimes, we can see the conception of Mandel Stress, I wonder

What is mandel stress? How to use it?

Thanks. 

The 2nd Sandia Fracture Challenge is here!

update, 7/24/2014: The information packet ("SFC2-challenge-v5.ppt") is no longer attached to this post (iMechanica has a file size limit of 1 MB, so we can not attach the 6 MB file). IF YOU WOULD LIKE THE INFO PACKET, PLEASE E-MAIL ME, blboyce@sandia.gov and copy Dr. Sharlotte Kramer, slkrame@sandia.gov. If you have an older version of the information packet, please also e-mail for the newest (v5) info packet.

We intend to send the shear calibration data to all those whose e-mail address I have by August 1st (sorry for the delay!).

Theoretical and Applied Mechanics Letters, Volume 4, Issue 3, 2014 is online now!

Dear everyone,

The third issue in 2014 (Volume 4, Issue 3) of Theoretical and Applied Mehcanic Letters (TAML) is now online.

Welcome to this young journal http://taml.cstam.org.cn for rapid publication of your exciting results. Smile

_______________________________________________________________________________

Call for Abstract: Symposium XX: Bridging Scales in Heterogeneous Materials at 2014 MRS Fall Meeting & Exhibit (Nov 30 - Dec 5)

Dear colleagues,

You are cordially invited to submit an abstract to Symposium XX: Bridging Scales in Heterogeneous Materials at the 2014 MRS Fall Meeting & Exhibit, to be held
November 30 - December 5, 2014, in Boston, Massachusetts.

PhD Position in Computational Mechanics/Biomechanics at Villanova University

There is an immediate opening for a PhD student
position with a target start date of August 2014 in the Computational
Biomechanics and Solid Mechanics Laboratory at Villanova University.

Sulin Zhang's picture

Research Assistant position available

My group in the Deaprtment of Engineering Science & Mechanics /Biomedical Engineering has an immediate RA opening, expected to start from the Fall of 2014. 

Vladislav Yastrebov's picture

PhD position in numerical modelling of landslides and generated seismic waves at IPGP Paris

We are looking for a PhD
student to work on Numerical modelling of landslides and generated seismic waves.
This PhD is funded by the European project ERC SLIDEQUAKES.

From:

Anne Mangeney
Professor of Geosciences at University Paris Diderot, PRES SPC
Head of the Seismology Group, Institut de Physique du Globe de Paris

2014 Melosh Medalist

Phani Motamarri, from the University of Michigan, is the 2014 Melosh Medalist for his paper "A Spectral Finite-Element Based Method For Large-Scale Quantum Mechanical Calculations Using Kohn-Sham Density Functional Theory".  Please join me in congratulating Phani!

Pages

Subscribe to iMechanica RSS Subscribe to iMechanica - All comments

Recent comments

More comments

Syndicate

Subscribe to Syndicate