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The edge effect in open lipid bilayers

Submitted by Meisam. Asgari on

Highlights:

 A model for the free energy of the edge of an open lipid bilayer is derived.

The derivation is based on the interactions of the molecules comprising the edge.

The derived model can be employed to study pore growth in open lipid bilayers.

The model captures bending and torsional energies of the edge, in addition to the line tension.

The molecular origins of spontaneous curvatures and elastic moduli are investigated.

Applied Mechanics Division – Haythornthwaite Foundation Research Initiation Grants

Submitted by Executive Comm… on

With funding from the Haythornthwaite Foundation, the Executive Committee (EC) of the Applied Mechanics Division (AMD) of ASME is pleased to announce the establishment of the Haythornthwaite Research Initiation Grant Program, targeting university faculty engaged in research in theoretical and applied mechanics that are at the beginning of their academic careers. Applicants must hold a tenure-track appointment at the rank of Assistant Professor at a US university on October 1, 2015, and must not be more than 5 years beyond receipt of their doctoral degree at the time the award is made.

Regarding the ABAQUS Subroutine 'FRIC'

Submitted by rmbwang on

Dear all,

I have recently using the subroutine FRIC in ABAQUS, and I found that there is a variable 'PRESS' which is specified as 'contact pressure at end of increment' in the ABAQUS documentations. However, I have extracted this PRESS in a text file through applying the subroutine FRIC in a two-block compression model, and I found that the PRESS is different from the contact pressure (CPRESS) which can be obtained from the field output and it seems that there are two values in each simulation increment.

Position filled: Postdoc opening in design optimisation at the University of California, San Diego

Submitted by alicia on

The Multiscale and Multiphysics Design Optimization Group at the University of California, San Diego, is looking for a Postdoc. The research will develop numerical methods in coupled multiphysics and multiscale topology optimisation in aircraft in a modularized and parallel computing environment. It is expected that the applicants would have background in topology optimization or level set method, aeroelasticity, computer programming and computational mechanics.

ASME Applied Mechanics Division Seeks Nominations for Awards

Submitted by Executive Comm… on

The Applied Mechanics Division, of the American Society of Mechanical Engineers, seeks nominations for the awards listed below. All the awards are international. Neither the nominee nor the nominator need be a member of the ASME. However nominators must not be active members of the respective award committees. Further descriptions of the awards are given at http://divisions.asme.org/amd/Honors_Awards.cfm. A PDF version of this announcement can be found as an attachment at the end of this blog entry.

Dynamic instabilities of frictional sliding at a bimaterial interface

Submitted by Eran Bouchbinder on

Understanding the dynamic stability of bodies in frictional contact steadily sliding one over the other is of basic interest in various disciplines such as physics, solid mechanics, materials science and geophysics. Here we report on a two-dimensional linear stability analysis of a deformable solid of a finite height H, steadily sliding on top of a rigid solid within a generic rate-and-state friction type constitutive framework, fully accounting for elastodynamic effects.

Large-eddy simulation with near-wall modeling using weakly enforced no-slip boundary conditions

Submitted by Mario Juha on

In the present paper, weakly enforced no-slip wall boundary conditions are revisited in the context of Large-Eddy Simulations (LES) with near-wall modeling. A new formulation is proposed in the framework of weakly enforced no-slip conditions that is better aligned with traditional near-wall modeling approaches than its predecessors. The new formulation is tested on turbulent open-channel flows at friction-velocity-based Reynolds numbers Reτ=395Reτ=395 and 950 benchmark problems.