Blog posts

Effects of mismatch strain and substrate surface corrugation on morphology of supported monolayer graphene

Submitted by Rui Huang on Wed, 03/03/2010 - 22:37

In a previous work, substrate-modulated morphology of graphene was analyzed using a numerical Monte Carlo method. Here we present an analytical approach that explicitly relates the van der Waals interaction energy to the surface corrugation and the interfacial properties. Moreover, the effect of mismatch strain is considered, which predicts a strain-induced instability under a compressive strain and reduced corrugation under a tensile strain.

Determination of strain energy release rate in an adhesive by using VCCT-Method with abaqus

Submitted by kianoosh kiai on Wed, 03/03/2010 - 14:26

Hello dear friends, I want to simulate a fracture process in an adhesive by the using of Double Cantilever Beam (DCB). My approach is the determination of strain energy release rate by the using of Virtual crack closure technique (VCCT). But I don’t know how can I begin with this. Can some one help me. Thanks a lot before because of your help.

Subsea Integrity

Submitted by Henry Tan on Wed, 03/03/2010 - 11:48

I am teaching Subsea Integrity for the MSc students majoring in Subsea Engineering at the School of Engineering, University of Aberdeen. This is a course that combines the fundamental principles (corrosion, fracture, fatigue and material selection) with the industry applications (subsea integrity management and implementation, cathodic protection, case studies on subsea reliability and engineering assurance).

Teaching time schedule

is it possible to get "yield stress at ambient temperature" AS the "von misses stress at very high temperature"? (ABAQUS)

Submitted by baleshan on Wed, 03/03/2010 - 08:56

research

Creating a path in ABAQUS using node set or elementset

Submitted by arasuk on Wed, 03/03/2010 - 08:49

Hi, I am interested to creating a path in visualising results in ABAQUS CAE.

Then I wish to plot xy plot of say x-distance Vs principal stress. How to achieve

say using node set or slement set.

I did by creating a path in the area of interest by many many mouse clicks.

I wish to avoid this, that's why I created node set or element set. After this

creating a path on this elset and plotting an xy plot is what my interet.

Highly appreciated to have feedback from experienced users. Thanks.

-arasu

is it possible to get "yield stress at ambient temperature" AS the "von misses stress at very high temperature"?

Submitted by baleshan on Wed, 03/03/2010 - 08:39

I didn't do any thermal analysis but only doing structural analysis but i am using measured temperature values to my structural model. I created temperature loading with time (Using amplitude method as you mentioned). Plastic perfect material model created with respect with temperature.

I used Nonlinear Static Analysis with Linear Perfect plastic materialmodel. (fy=612 at Temperature=20°C)

The yield stress and elastic modulus values wereinput with respect to temperature (Using FIELD)

ABAQUS

Submitted by anjudeepak on Wed, 03/03/2010 - 07:30

research

Hi.

I was trying to reproduce the work of Zhuang,Ellis and Yu to get a feel about ABAQUS before starting my actual work...i have already went through the geotech examples given in ABAQUS examples manual.

But i am not able to understand the analysis steps performed in this paper.

Could anyone please help me...

-anju