Advances in molecular assembly are converging to an ultimate in atomistic precision —nanostructures built by single atoms. Recent experimental studies confirm that single chains of carbon atoms —carbyne— exist in stable polyyne structures and can be synthesized, representing the minimal possible nanowire. Here we report the mechanical properties of carbyne obtained by first-principles–based ReaxFF molecular simulation. A peak Young’s modulus of 288GPa is found with linear stiffnesses ranging from 64.6–5 N/m for lengths of 5–64 ̊A.
Hi All,
I am a PhD student working with anisotropic elasticity to model T-stress. I understand the simplicity of derivation in Stroh formalism but am lost in the Matrix algebra whereas Lekhnitskii provides complex derivation for the formulation but on first glance, it seems more user friendly for numerical modelling.
Does someone have an experience in modelling the either one formalisms with MATLAB and could he share his experience?
Thanks for the sharing of information.
Novel use of nonlinear microscopy and image-based modelling to determine the relationship between structure and function in small arteries and veins in health and diabetes.
Overview
Overview
Simpleware (http://www.simpleware.com) is looking for a software programmer in a Research and Development role to develop novel image based mesh generation tools under the auspices of an EU Framework 7 Initial Training Network (ITN). You will be working closely with the Managing Director and the software development team. The position is open to nationals of any country except UK citizens or those that have been resident in the UK for more than 12 months in the last 3 years.
Overview
A 24 Month Post Doctoral position is available at The University of Exeter (www.exeter.ac.uk) for a software developer in a Research and Development role to develop image processing tools under the auspices of an EPSRC grant. This is a joint project with TU Delft and De Montfort University. The work at Exeter will be in close collaboration with software company Simpleware Ltd (www.simpleware.com).
Dear Colleagues,
I would be glad to present symbolic-numeric CAE system for frame structures analysis.
It will be available soon as Preview version for enthusiasts
The main features are:
Dear friends
I am modeling a
plate subjected to the vertical loading. the problem is, when the analysis goes
to the nonlinear part, the reactions in some nodes get negative value, while the
plate must be free to move upwards. so there must be no negative value
for reaction. i was wondering, if someone help me define the support in a way
that the plate would be free to move upward and constrain it for the downward
movwement.
Best Regards
