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how to start a research

Submitted by mbmohan on

hi all,

 I am a mechanical engineer currently pursuing Master degree (Post graduation). Ultimately i also want to pursue a research leading to PhD after my master's. Its my burning desire to do some significant research in the field of Fatigue analysis using Fracture mechanics approach preferably for aerospace domain using advanced CAE softwares like Nasgrow, Afgrow, Abaqus, FE-safe, MSC Fatigue, etc,..

International Journal of Applied Mechanics (IJAM) Vol.1 No.4

Submitted by zishun liu on

Forthcoming papers of International Journal of Applied Mechanics (IJAM) Vol.1 No.4 

1. “Strain Deconcentration In Thin Films Patterned With Circular Holes”, Matthew B. Tucker and Teng Li, (University of Maryland, USA). 

2. “Thermal-Elastic Behaviors Of Staggered Composites”, Fan Yang , Dai-Ning Fang and Bin Liu  (Tsinghua University, China). 

I'm looking for a new vibration exciter

Submitted by haitao hu on

I'm looking for a new vibration exciter which exciting frequency can reach 300hz .I'll use it to load the cantilever beam specimen , compare the  fatigue life of the specimen under different loading frequency. the electric exciter can not  generate the same amplitude under difference exciting frequency.

who can tell me that how can I found or design a mechine to finish the expriment.thank you

Compositional patterning in coherent and dislocated alloy nanocrystals

Submitted by vh on
Variations in the distribution of the alloy components can significantly influence the electronic properties
of self-organized alloy nanocrystals. Using a combination of finite element and quadratic programming
optimization methods, we have developed an efficient numerical technique to compute the equilibrium
composition profiles in coherent and dislocated nanocrystals. We show that the variations in composition
profiles arise due to the competition between chemical mixing effects and the relaxation of composition-
dependent mismatch strain as well as strain due to dislocations. We find that the composition profiles

How to attach a file to a comment?

Submitted by Anonymous (not verified) on

Drupal, the software that powers iMechanica, treats comments very differently from a blog entry.  You cannot attach a file to a comment directly. 

One way to link to a file in the comment is to first write a new blog entry, where you can upload the file. The blog entry and the uploaded file have distinct URLs. In your comment, you can choose to hyperlink to your blog entry, or to the uploaded file.

Abaqus error help for radiation

Submitted by emrecan88 on

I am runnin simulations for heat transfer analysis counting conduction, when I add the effect of surface radiation to environment with *radiate or *sradiate , I am getting the error message:

***WARNING: Temperature at 1 nodes has fallen below absolute zero. Increment

             will be attempted again with a new time increment. The nodes have

             been identified in node set WarnNodeTempBelowZeroStep2Inc45.

Comparison of intrapore velocities measured and simulated in the highly macro-porous biscayne aquifer

Submitted by BoJing Zhu on

Using the data from 3D hybrid lattice boltzmann code under parallel environments, some interesting simulated results are obtained by using Tecplot.

Tips:

After download the attached files, please change files name from *.ppt to *.wmv, then they  can be display normally by media player  

Water diffusion and fracture behavior in nano-porous low-k dielectric film stacks

Submitted by Li Han on
Among various low-dielectric constant low-k materials under development, organosilicate glasses
OSGs containing nanometer-size pores are leading candidates for use as intrametal dielectrics in
future microelectronics technologies. In this paper, we investigate the direct impact of water
diffusion on the fracture behavior of film stacks that contain porous OSG coatings. We demonstrate
that exposure of the film stacks to water causes significant degradation of the interfacial adhesion