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Fri, 2016-12-02 15:02

In reply to Bending moment and axial force from free body cut ABAQUS

Subscribe to and seek assistance from the
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Search the archive before posting.

Good luck

Frank

This Position has been filled.

Thu, 2016-12-01 14:16

In reply to PhD Position in Mechanics & Materials of Origami Metal Structures at UC Merced

This Position has been filled.

Hello Matin,

Mon, 2016-11-28 01:01

In reply to Dynamic Auxiliary Fields for Interaction Integral

Hello Matin,

 

Have you got the answer to your question? I was looking for an answer too! Would appreciate if anyone can help!

 

Thanks

A Bhuiyan

Sir

Sun, 2016-11-27 10:51

In reply to PhD/Postdoc position at IIT Delhi

Sir

Greetings of the day, I am keenly interested to do Phd in the mentioned topic. I have been working in SRM UNIVERSITY since last 6 years. And I have keen interest in mathematics and solid mechanics too. Sir I have mailed regarding the same and I m waiting for your reply.

FGM

Thu, 2016-11-24 11:10

In reply to functionally graded material

I studied your paper. If temperature doesn't exist in my problem,  should I use from user subroutine in ABAQUS? can I vary material properties in integral point by APDL ansys without temperature? I  am not  familiar to ABAQUS. 

please help me.

Best regards. 

Mina

What to include in a model

Thu, 2016-11-24 10:28

In reply to Indeed, if one want to

Dear Quy Dong,

these are very good points! I personally think that the goal is not to reproduce all MD results in a continuum theory.
I see MD more as an inspiration to which mechanisms might be important and should not be neglected as they might have a strong influence on the macroscopic fracture behavior. I agreen that heat transfer and wave propagation might also important.
So I think that in order to decide what to include in a model or not we would need to in some way extract information on which aspects contribute how much to energy dissipation, and which mechanisms change the behavior of cracks. This will be different for different types of materials and microstructures. MD might help here, as we have all the information from all the atoms, but the gold standard would be experimental methods...

Link to the papers

Thu, 2016-11-24 00:03

In reply to Discussion of fracture paper #15 - Designing for crack arrest

Hi Kumar,

I cannot upload either of the parts of the paper. However, there is a link to Part-2 a couple of lines below the link to Part-1.

Now that I am in a hotel lobby replying to you, I realise that when I am outside my university area I cannot access more than the highlights, abstract and graphical abstracts because it is not an open access paper. Thank you for reminding me of this. 

Per

Abaqus mailing list

Wed, 2016-11-23 16:21

In reply to Point mass problem with abaqus

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Search the archive before posting.

Good luck

Frank

thanks...

Wed, 2016-11-23 07:04

In reply to functionally graded material

your guidence is very useful, thanks alot.

Mina

Dear Mina,

Wed, 2016-11-23 01:52

In reply to functionally graded material

Dear Mina,

There are many ways to implement functionally graded elements in commercial FE packages. One way is to make use of the temperature if you are dealing with a purely mechanical problem. You can also easily do it by means of a user subroutine. All the options are thoroughly discussed in the following paper:

http://link.springer.com/article/10.1007%2Fs10999-014-9265-y

(You can find a pre-print version and the associated code at www.empaneda.com)

I hope that this is useful.

Emilio

Hi,

Tue, 2016-11-22 15:56

In reply to Discussion of fracture paper #15 - Designing for crack arrest

Hi,

Can you please upload both Part-1 and Part-2 papers?

Thanks

Kumar

Congrats

Mon, 2016-11-21 08:22

In reply to About adiabatic shear failure.....

Congratulations, Dani!

Indeed, if one want to

Mon, 2016-11-21 05:53

In reply to Journal Club for November 2016: 3D Fracture Mechanics at the Atomic Scale

Indeed, if one want to reproduce MD results by a continuum theory, plasticity can not be neglected. Sometimes, plasticity may not be enough. Many ssues can intervene in the MD process for example heat transfer, wave propagation, etc..., which will render the continuum method quite complicated.

Please see attached file.

Mon, 2016-11-21 05:32

In reply to Research assistant position at the TU Braunschweig

Please see attached file.

Please see attached file.

Mon, 2016-11-21 05:32

In reply to Research assistant position at the TU Braunschweig

Please see attached file.

Thanks for your interest in

Sun, 2016-11-20 17:17

In reply to This is a very interesting

Thanks for your interest in such kind of work! From my perspective, however, there are already pretty good, atomistically-informed crystal plasticity models for semi-brittle materials out there (e.g., http://www.sciencedirect.com/science/article/pii/S0749641912000526http://www.sciencedirect.com/science/article/pii/S1359645412002431http://www.sciencedirect.com/science/article/pii/S0749641915001485 ,http://www.annualreviews.org/doi/pdf/10.1146/annurev-matsci-070214-020852). The challenge seems to lie more in how to couple/implement the crack tip plasticity in such models, e.g., through appropriate source and sink terms. I would be interested in collaborations along such lines!

Ph.D. Applicant

Thu, 2016-11-17 12:23

In reply to PhD student open position at Virginia Tech

Dear Dr. Shakiba,

I have sent you neomerous Emails about the position in your group, but I did not recieve any responses.  

I finished my master studies at Sharif University of Technology, in Structural Mechanics, under the supervision of Professor Hossein Shodja.

During my graduate program, I gained experience and knowledge in performing analytical and computational studies in the field of solid mechanics. Moreover, I am familiar with finite element analysis and simulation in COMSOL Multiphysics. Above all, I acquired programming skills and employed them to various problems, which I believe is one of the most important abilities I possess. In my M.Sc. thesis, I studied surface acoustic wave, SAW, propagation in functionally graded piezo-electro-magnetic material, which led to two publications in peer-reviewed journals. In addition, I have completed a research on the Rayleigh wave propagation in piezoelectric layer/half-space system with imperfect interface, which is ready to be submitted. Finally, I am currently working on modeling of Nano mechanical piezoelectric cantilevers employing higher order continuum theories.

 I have explored your webpage in detail. Your researches seem like an excellent fit for me. I believe with my experience and expertise in performing computational analysis, I can contribute to several ongoing projects in your group. I am also highly interested in learning about your future research and experience new fields under your supervision.

I will be grateful if you could consider my application. Please also feel free to email or call me. I am looking forward to hearing from you. Thanks for your consideration.

 CV: http://alum.sharif.ir/~seskandari/Shahin%20Eskandari%20CV.pdf

Sincerely yours,

Shahin Eskandari.

 --

Shahin Eskandari

Master of Structural Mechanics / Civil Engineering

Sharif University of Technology

Tel: +98-937-486-3428

Email: seskandari@alum.sharif.edu

Webpage: alum.sharif.edu/~seskandari

 

Very nice collections~

Thu, 2016-11-17 00:22

In reply to Special issue on Nanomechanics in Extreme Mechanics Letters

Great efforts, Yong!

Ktt unit

Wed, 2016-11-16 19:19

In reply to cohesive element definition in ABAQUS

Hi everyone

I think the unit of Knn Kss and Ktt should be the same with elastic constants (like MPa, or N/m^2 etc.)

Please see Abaqus Analysis uses' manual (29.5.6 Defining the constitutive response of cohesive elements using a traction-separation description) for details. Subtitle is Linear elastic traction-separation behavior.

Best wishes

Jiadi

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