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Can anybody tell me what is the most suitable software for molecular dynamic simulation of CNT from SIESTA and Material Studio?

                              About: why we have not synthetic diamonds.

hi every body

nice to meet all of u

i am a metallurgical engineering. and recently i am trying welding residual stress simulation using abaqus .

i
have some problem .i think i should set a thermal history for the material
witch is welded in simulation. i want to know how can i set a temperature
dependant properties like tensile stress or  yield stress and ...

hi,

I just started working on composites. when i applied the load on one side of the panel, ansys is giving me an error, stated

' large pivotal value. you had given temparature dependent material property', but i'm doing just a static analysis.

i searched for this error in the help menu, but couldnt found any help.

any info regarding this will a great help for me.

mitra

hello!

i am completely new using ansys for composites. any suggestions regarding 'how to start' and 'what to refer' will be of great help for me.

please anyone help me out with this, i has to do 'fatigue analysis of composite laminate' as the part of my project work.

thanks in advance.

mitra

Hi Every one, 

I noticed one thing about specifying surface flux in abaqus/cae.  I specify user-defined surface flux in abaqus/cae, but the inp-file  writes *DsFlux as seen in the following lines,

** LOADS

**

** Name: Load-1   Type: Surface heat flux

*Dsflux

_PickedSurf28, SNU, 10.

When I submit the Job, I see this error

Error in job Essai: USER SUBROUTINE DFLUX IS MISSING

Job Essai: ABAQUS/Standard aborted due to errors. 

hello every one

i am a student who is doing a project on surface finish of a turbine blade,

presently the surface roughness is 11.8 microns and i am trying to decrease the surface roughness to 0.1 micron

kindly suggest me the methods to acheive the above mentioned objective 

thanking you

angad