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

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

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.

Usually, taut helical strand bending is dealt with by decoupling axial load and bending analysis. In the attached report,  based on a purely geometrical approach, it is shown that there is indeed some coupling, albeit small.

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.

I would like to share with you our recent paper published in the Journal of Applied Mechanics: J. Appl. Mech. 81(8), 081010 (Jun 02, 2014)

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:

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?