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Nonlinear free and forced vibration analysis of a single-walled carbon nanotube using shell model

Submitted by payam.soltani on Sat, 10/08/2011 - 03:39

research

Payam Soltani, J. Saberian, R. Bahramian, and A. Farshidianfar

http://fundamentaljournals.org/ijfps/archive.html#A14

In this Paper, the nonlinear free and force vibration of a single-walled carbon nanotube (SWCNT) with simply supported ends is

investigated based on von Karman’s geometric nonlinearity. The SWCNT described as an individual shell and the Donnell’s

equations of cylindrical shells are used to obtain the governing equations. The Galerkin's procedure is used to discretized partial

Special Saint-Venant's Principe of the “ Hole in Plate” Problem

Submitted by Jian-zhong Zhao on Sat, 10/08/2011 - 02:28

research

The problem of the
infinite plate with a central hole loaded by an equilibrium system of forces is
generalized and its formulation of Special Saint-Venant's Principle is
established. It is essential to develop mathematical theories of Special
Saint-Venant's Principle one by one if Elasticity has to be constructed to be
rational, logical, rigorous and secure mechanics.

Saint-Venant's Principe of the Problem of the Cylinder

Submitted by Jian-zhong Zhao on Sat, 10/08/2011 - 02:20

research

The problem of the
infinite axisymmetrical circular cylinder loaded by an equilibrium system of
forces on its near end is discussed and its formulation of Special
Saint-Venant's Principle is established. It is essential to develop
mathematical theories of Special Saint-Venant's Principle one by one if
Elasticity has to be constructed to be rational, logical，rigorous and secure mechanics.

Modified Saint-Venant's Principe of the Problem of Curved Bars

Submitted by Jian-zhong Zhao on Sat, 10/08/2011 - 02:13

research

The proof of
Saint-Venant's Principle for curved bars is discussed and the formulation of
Modified Saint-Venant's Principle of the problem is established. The study
shows that Saint-Venant's decay of stresses is valid only for the curved bars
which are “effectively infinite”. It is essential and significant to develop

Abaqus

Submitted by kdevarajanmts on Fri, 10/07/2011 - 16:11

research

quenching

hello everyone.

iam devarajan.k currently pursuring M.Tech in Engineering Design in Amrita University and doing projects on hot rolling of thick plates.For FEm simulation iam using ABAQUS software. After material rolled, i want to quench that material into water or some other material. i dont know how to do this in abaqus. please guide me if any one know this. please

With Regards

Devarajan.K

How to link the fortran compiler with Abaqus?

Submitted by tony711 on Thu, 10/06/2011 - 21:50

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User Subroutine

Dear All Abaqus Experts:

I am new Subroutine user and I have Force2.0 installed on my computer with Abaqus 6.10. When I type 'abaqus job=analysis user=analysis', it returns that 'analysis.f or analysis.obj can not be located', I changed the extension of the .f file to .for, which seems pass through but still with error that 'ifort.exe can not be found'. I looked everywhere and got no clue, pls pls help on this and your kind help is mostly appreciated.

Solver settings in Abaqus/S for delamination analysis with cohesive elements

Submitted by BrianBak on Thu, 10/06/2011 - 12:50

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Hi

I have different 3D models of laminates where I analyse the delamination propagation using zero thickness cohesive elements in Abaqus/Standard. My experience with the RIKS solver and Newton solvers are that they are extremely sensitive to even small changes in the step size settings as well as other solver settings.

Mathematics and Mechanics of Solids

Submitted by arash_yavari on Thu, 10/06/2011 - 01:21

research

Dear Friends:

I would like to encourage you to consider submitting papers to Mathematics and Mechanics of Solids. The focus of this journal is on applications of mathematical techniques to solid mechanics problems. You can find more information in the following link: http://mms.sagepub.com/

Please feel free to contact me (arash.yavari [at] ce.gatech.edu) if you have any questions regarding this journal.

Regards,

Nonlocal Instability Analysis of FCC Bulk and (100) Surfaces Under Uniaxial Stretching

Submitted by Harold S. Park on Wed, 10/05/2011 - 01:36

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nonlocal

defect nucleation

The objective of this paper is to examine the instability characteristics of both a bulk FCC crystal and a (100) surface of an FCC crystal under uniaxial stretching along a <100> direction using an atomistic-based nonlocal instability criterion. By comparison to benchmark atomistic simulations, we demonstrate that for both the FCC bulk and (100) surface, about 5000-10000 atoms are required in order to obtain an accurate converged value for the instability strain and a converged instability mode. The instability modes are fundamentally different at the surface as comp