research
Extreme Particle Shape Effect for Packs of Platonic Solids
For centuries, great minds like Kepler, Maxwell and Einstein have investigated the statistical characterization of many-body systems, and implications of small-scale structures on the macroscopic transport and mechanical properties. In this work, an accurate statistical description of heterogeneous particulate materials is computed using novel adaptive interpolation/integration scheme. This statistical information is then utilized within mathematical theories for predicting the overall thermo-mechanical behavior.
Cellular Automata for Multi-scale Fracture
Could cellular automata be used to model mechanisms (for quasi-brittle fracture) that occur at the meso-scale and then feed these mechanisms to a macro-scale finite element model? Is it possible to replace constitutive models with mechanistic models, simulating mechanisms that lead to fracture instead of formulating equations that predict failure? These are typical questions that have motivated my recent collaboration with Dr Anton Shterenlikht at the University of Bristol.
application for a post doc
Dear imechanica members,
My name is Ahmed El Moumen and I am posting this blog in searching for postdoctoral positions in Computational Solid Mechanics and heterogeneous materials modelling.
I obtained Ph.D. in Computational Mechanics at Lille 1 university/mechanics laboratory of Lille. My thesis work involves developing multiscale method to predect the elastic and plastic behavior of heterogeneous materials using homogenization techniques.
Residual Stresses and Poisson’s Effect Drive Shape Formation and Transition of Helical Structures
Strained multilayer structures are extensively investigated because of their applications in microelectromechanical/nano-elecromechanical systems. Here we employ a finite element method (FEM) to study the bending and twisting of multilayer structures subjected to misfit strains or residual stresses. This method is first validated by comparing the simulation results with analytic predictions for the bending radius of a bilayer strip with given misfit strains.
CutExtrude error Abaqus
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Hi all,
I'm trying to create a full-scale truss for a static loading simulation using Abaqus.
I wanted to use a Python script to do this, but I am not very experienced with this language or the Abaqus methods.
The members forming the truss are cee sections. However, at the ends of the cee sections I want to create an extruded cut
like so:
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However, when I try to use the CutExtrude command, Abaqus keeps giving me an "Invalid sketch plane" error even though I'm sure that the face I'm putting in the CutExtrude method is correct.
Getting elastic constants using LAMMPS .
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Hello everyone ,
LAMMPS suggests a script to calculate C44 , C11 & C12 .The question is : How to calculate the others for a nanomaterial ? Thanks in advance !
Summer School on Fatigue and Damage Mechanics of Composite Materials
Dear Colleagues,
we are glad to present the Summer School on Fatigue and Damage Mechanics of Composite Materials (13 . 17 July 2015) and the Short Course on Experimental Techniques and Testing of Composite Materials (9 . 10 July 2015) organized by and to be held at The Department of Management and Engineering - University of Padova in Vicenza - Italy.
Post-doctoral position in Montréal on crystal plasticity in collaboration with the aerospace industry
Hi
I am looking for a 12-15 months post-doctoral fellow to work on crystal plasticity finite element simulation of impacts. This project is parts of a larger collaborative project with Pratt and Whitney, Bell Helicopter, L3 and Héroux Devtek aiming at understanding the effects of shot peening on fatigue life. The project involves 3 other post-doctoral fellows and 4 PhD students.
The starting date is flexible and could be as soon as now, depending on the candidates expertise.
The interested candidates are invited to send me their CV and publication lists.
Virtual Special Issue on LCA of Tall Buildings
Elsevier-CTBUH Virtual Journal on Tall Building Research