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Engineering journal that is reliable (high impact factor is better) that discuss about the expert opinion

Submitted by Peter A on
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I have been asking this question in physics, chemistry, corrosion engineering, the same question.

now, in this forum, i am hoping to get some information in this subject too.

Engineering journal that is reliable (high impact factor is better) that discuss about the expert opinion, philosophy. Not on the data 'show and tell'

thanks

Journal with high impact factor that discuss more on expert opinion?

Submitted by Peter A on
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what is the journal with moderate or high impact factor that discuss about expert opinion on the philosophy of science in general?

I am not interested in indepth particular data show and tell type. I am more onto scientifical philosophy.

Sorry, I have been asking about this also in chemistry forum and corrosion forum.

and now, I am asking in the mechanics...

your answer could be both in the science in general, or in the subject of your expertise.

thank you.

peter

Stress concentartion factors in the beams with hole

Submitted by manooir on
research

Dear All,

A section of a beam with hole is subjected to the shear and moment. Assuming that we ignore the moment in the section of the beam, is there any formulation for obtaining the stress concentration due to shear only. I have attached a picture of the problem.

I appreciate your professional comment.

Thank you,

Manooir

 

Lithium batteries--When mechanics meets chemistry

Submitted by Zhigang Suo on
research

When I learned chemistry in college, the subject was presented to me with equations of chemical reactions.  It took me some time to realize a couple of simple points:  reactants need to meet to produce a product, and compounds take space.

The connection between chemistry and mechanics is made vivid to me in recent years in studying lithium batteries.  As an example, here is a recent paper when chemistry is linked with plasticity, mass transport, and fracture—essential ingredients of solid mechanics.

Debugging standard user subroutines of ABAQUS

Submitted by Hamid.Mirkhani on
research
User subroutines in ABAQUS

Hi,

I managed to find a way to debug UMAT step by step. I tested it on ABAQUS 6.9 using intel fortran 11.0 which is integrated with Visual Studio 2005 or 2008 running on Win 7/x64. The process is the same for other versions and other user subroutines (The same process should also work in linux, but with different debugger).

Using VGETVRM to compute strain in VUSDFLD ( abaqus explicit subroutine)

Submitted by arash_n on
research
metal forming

hi everybody.

I've used vgetvrm in vusdfld to calculate strain.

I have two question.



1- what's the differences between tensor strain and engineering strain?

I read user subroutine manual and it says"The shear strain components returned from utility subroutine VGETVRM are tensor components and not engineering components."



2-I want to calculate PE11 and PE22 with vgetvrm. but my results are strange.for example PE11 change between -11.14033 and 75.25797.

and PE22 change between -1.5974975E-04 and 4.7500171E-03

Hysteretic damping in modal analysis using ANSYS

Submitted by saeed_11 on
research
ansys
Modal Analysis
Hysteretic damping

Hello,

I want to do modal analysis of a structure with viscoelastic material. The viscoelastic
material has a complex youngs modulus E= E (1+i*g), where g is the loss factor. In ANSYS, modal analysis ignores all
nonlinearity, so how can I perform modal analysis with viscoelastic material?

OR

How can I perform modal analysis in ANSYS considering hysteretic damping (complex Young’s
modulus  E= E (1+i*g) as input).


Cheers

 

J Plastic Calculation

Submitted by nsanteb on
research
Dear All:
 
I completed calculating my stress-intensity factors by  modifying the verification test case  in ANSYS 
I need to calculate the J-plastic values for  Ramberg-Osgood type material using isotropic hardening for various n values . 
Does ANSYS have a Ramberg-osgood material model built in ?

The minimal nanowire

Submitted by lamm on
research
Mechanical properties of nanoscale systems

Advances in molecular assembly are converging to an ultimate in atomistic precision —nanostructures built by single atoms. Recent experimental studies confirm that single chains of carbon atoms —carbyne— exist in stable polyyne structures and can be synthesized, representing the minimal possible nanowire. Here we report the mechanical properties of carbyne obtained by first-principles–based ReaxFF molecular simulation. A peak Young’s modulus of 288GPa is found with linear stiffnesses ranging from 64.6–5 N/m for lengths of 5–64  ̊A.

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