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Updated: 13 hours 42 min ago

It looks like "hyperfit" is quite similar to your photo

Tue, 2016-05-03 13:42

In reply to fitting of test data to get constants from hyperelastic properties

It appears that "hyperfit" can be downloaded for free from sourceforge at the following link:

https://sourceforge.net/projects/hyperfit/

Or directly from the main website

http://www.hyperfit.wz.cz/

regards,

Louie

Dear Subscriber 

Tue, 2016-05-03 07:38

In reply to Simulation of surfaces interaction in 2d model in Abaqus

Dear Subscriber 

thank you for your answe It will be very helpful for me.

Best 

Anthos

Simulation of surfaces interaction in 2d model in Abaqus

Mon, 2016-05-02 05:02

In reply to Simulation of surfaces interaction in 2d model in Abaqus

Plesae go through following chapters of the Abaqus user guide:

Chapter 36, “Defining Contact Interactions”

Chapter 37, “Contact Property Models”

Chapter 38, “Contact Formulations and Numerical Methods”

Chapter 39, “Contact Difficulties and Diagnostics”

Chapter 40, “Contact Elements in Abaqus/Standard”

Chapter 41, “Defining Cavity Radiation in Abaqus/Standard”

 

You might want to try

Sun, 2016-05-01 20:52

In reply to ACP

You might want to try SwiftComp, a general-purpose multiscale composites modeling software completely free in the cloud at https://cdmhub.org/resources/scstandard

how to cool the assembly?

Sun, 2016-05-01 04:24

In reply to Suggestion to resolve in K units

Is there any way to cool the assembly.I cant able to cool it.But for Residual stress generation it has to be cooled.

can i have your contact no so that i can discuss it over phn?

 

Sure Sir, 

Sun, 2016-05-01 04:01

In reply to Hi Vishal,

Sure Sir, 

Your familiarization with my supervisor makes me glad. I will convey your wishes. Thanks for the paper, it seems quite helpful. Currently, my task is to solve a few simple contact-impact problem to understand the physics and theory of this subject practically. 

Thanks again Sir,

Sincerely,

Vishal 

Hi Vishal,

Sat, 2016-04-30 17:51

In reply to Hi Sir,

Hi Vishal,

Convey my wishes to your supervisor. We know each other pretty well.

Coming to your question on contact-impact formulations, I never implemented contact in FEM codes. But, I read and understood the concept to some extent from the paper by Camacho and Ortiz. It is based on predictor-corrector type. Here is the link to that paper : http://ac.els-cdn.com/0020768395002553/1-s2.0-0020768395002553-main.pdf?...

Please have a look at it. If I find anything better I will get back to you.

Regards,

Siva.

Re: The stress intensity factor and Young's Modulus

Sat, 2016-04-30 08:26

In reply to The stress intensity factor and Young's Modulus

For a linearly elastic body, under traction-prescribed boundary conditions, the stress intensity factor is independent of Young's modulus.  See my class notes on crack tip field.

Hi Sir,

Sat, 2016-04-30 01:51

In reply to Lecture notes or material to get start Contact Mechanics.

Hi Sir,

Yes, Dr. Sachin Singh Gautam is my Supervisor. I am really glad that you replied but I am unable to find the complete formulation of a particular-kind of problem and its treatment. As in FEM, to solve a plate with a hole problem (for a case), we have 2D stress-strain formulation, available in almost all books. From there any student can learn the way of analysis of such problem. Can't we learn the analysis of contact mechanics problems similar to the FEM..?

Thanks a lot sir,

Sincerely,

Vishal Agrawal 

Hi Vishal,

Fri, 2016-04-29 17:40

In reply to Lecture notes or material to get start Contact Mechanics.

Hi Vishal,

There are many sources in internet explaining contact formulation in Finite elements. For e.g., http://opensees.berkeley.edu/workshop/OpenSeesDays2005_presentations/AA-... seems good. It would be better to understand the treatment of contact mechancis given in K.L. Johnson before understanding the FEM version of treating contacts.

By the way, are you working with Dr. Sachin Singh Gautam at IIT Guwahati? I find your topic close to his areas of interest. Anyway, my best wishes for you.

With Regards,

Siva.

abaqus

Fri, 2016-04-29 15:35

In reply to coupled heat transfer and mass diffusion

Subscribe to and seek assistance from the
ABAQUS mailing list
https://groups.yahoo.com/group/ABAQUS
Search the archive before posting.

Good luck

Frank

Suggestion to resolve in K units

Fri, 2016-04-29 11:41

In reply to 22 degree centigrade

 I am expecting it to be a minor problem/ minor miss. Please try to resolve the problem by following temp units in K. Check if you are getting same temperature in K units.

22 degree centigrade

Fri, 2016-04-29 11:20

In reply to Units of Temp

The ambient temperature is 22 degree centigrade.Cant find what is the problem. Please suggest.

vumat problem

Fri, 2016-04-29 08:31

In reply to When and where the stress objective rates are used in ABAQUS software?

<p>hii..</p>
<p>im a phd student , and i have question related to updation in shear modulus of&nbsp; a film (which is not constant but a linear function of film thickness&nbsp;&nbsp;&nbsp; E= Eint*(1+(beta*coordinates(z direction)/thickness))).</p>
<p>i have a soft elastic film (2D-shell) and applying a external force by using vdload&nbsp; subroutine to deform the film surface , so my question is that when the film deform ,what will be shear modulus ???(suppose initially position of element /point&nbsp; is =z1 and after deformation it reaches at z2)??</p>
<p>thanks in advance ..</p>
<p>&nbsp;</p>

cell mechanics

Fri, 2016-04-29 06:55

In reply to cell mechanics

Experimental studies recently performed on single cancer and healthy cells have demonstrated that the former are about 70% softer than the latter, regardless of the cell lines and the measurement technique used for determining the mechanical properties. At least in principle, the difference in cell stiffness might thus be exploited to create mechanical-based targeting strategies for discriminating neoplastic transformations within human cell populations and for designing innovative complementary tools to cell-specific molecular tumour markers, leading to possible applications in the diagnosis and treatment of cancer diseases.

Parabéns!

Fri, 2016-04-29 06:39

In reply to 2016 Thomas J.R. Hughes Young Investigator Award - Professor Pedro M. Reis

Parabéns Pedro, um abraço!

Units of Temp

Thu, 2016-04-28 23:27

In reply to The initial temperature is

Also check, you are following the necessary steps for giving the temperature input in right set of units. Either in oC or in K. Also what about the environment temperature ?

The initial temperature is

Thu, 2016-04-28 09:04

In reply to Environment temperature

The initial temperature is given as 22 degree centigrade.

 

Increase the time period

Thu, 2016-04-28 05:20

In reply to ABAQUS Transient Heat Transfer

Hi,

A general rule of thumb- the more the 'Time period' that you mention, usually the more the 'increments', and hence smoother distribution.

What I mean, is that I don't think you are giving enough time to your model to finish the analysis. Try giving more time-period, and the results should be better (though giving huge time periods is also pointless. They should just be big enough).

You can always decrease the 'Initial increment size' if you have problems with convergence. This can be calculated as well, but given the simplicity of your model- I suggest you simpkle go trial and error.

Best of luck,

Vikrant Srivastava

 

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