research

iMechanica Journal Club (October 2013): Contortion of thin elastic rods

Submitted by Pedro Reis on Mon, 10/07/2013 - 00:00

geometric nonlinearities

mechanical instabilities

Modeling and Simulation of Moisture Diffusion in Hybrid Fiber-reinforced Polymer Composites

Submitted by prathyush963 on Sun, 10/06/2013 - 04:03

research

Hybrid fiber-reinforced polymer composites have
extensive applications due to their high strength, corrosion resistance,
low maintenance and design flexibility. However, moisture absorbed by
composite components plays a detrimental role in the integrity and
durability of hybrid structure since it can degrade the mechanical
properties and induce interfacial delamination failures. In the current
study, the moisture diffusion characteristics in two-phase
(unidirectional S-glass fiber reinforced epoxy matrix/unidirectional
graphite fiber reinforced epoxy matrix) hybrid composites using moisture
concentration-dependent diffusion method have been investigated. In the
moisture concentration-dependent diffusion method, the diffusion

Recent paper on defective nanotwinned boundaries in Cu

Submitted by Jaime on Fri, 10/04/2013 - 02:34

research

Case Studies in Structural Engineering

Submitted by Laure Ballu on Thu, 10/03/2013 - 14:19

code applications or performance-based design

NEW JOURNAL WELCOMING SUBMISSIONS

To submit your paper, go to http://www.journals.elsevier.com/case-studies-in-structural-engineering/

Note from the Editor, Kourosh Kayvani:

Scale transition of a higher order plasticity model – a consistent homogenization theory from meso to macro

Submitted by L.H.Poh on Thu, 10/03/2013 - 00:21

research

size scale dependent plasticity

multiscale mechanics

homogenization

Book Review in Journal of Applied Mechanics, April issue, 2014

Submitted by Yonggang Huang on Wed, 10/02/2013 - 21:38

research

A book review by Prof. Jan Achenbach (Northwestern University) is published in the Journal of Applied Mechanics, April, 2014. The book, The Theory of Materials Failure, was authored by Prof. Richard M. Christensen and published by Oxford University Press, 2013.

http://appliedmechanics.asmedigitalcollection.asme.org/article.aspx?articleid=1734822

Incompressibility limit

Submitted by Breslavsky on Tue, 10/01/2013 - 20:06

research

incompressibility

poisson's ratio

Right Cauchy-Green Tensor

Dear All,

I want to calculate the limit of the fraction (J-1)/(1-2*nu) when material approach to incompressibility, where nu is the Poisson's ratio and J is the third invariant of the Cauchy-Green deformation tensor. In this case J->1 and nu->0.5, but I can't find any reference, how J depends on nu.

Intuitively, this limit has to be a finite value, as it is known that (J-1)^2/(1-2*nu) -> 0 (under the assumption that there is no hydrostatic pressure). Thanks in advance for any suggestions

About indentation simulation with Ansys

Submitted by haolpk37 on Tue, 10/01/2013 - 13:57

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Ansys simulation

Hi,all

Recently,I met some problems about intendation simulation with Ansys.My simulation consider failure and large deflection.But the elements happen to distortion when the defelction became very large. So I have a confusion about how to handle the element distorted. Who have any idea about that?

My simulation is a quasi-static problem, How to use Ls-dyna to simulation this problem if the Ansys can't solve the element distortion efficient? Thanks a lot!