How to model a Porous Media | An ABAQUS Tutorial

[@MichaelOkereke]

Hi all, here is my new video. I hope you enjoy it. Links to downloadable resources and scripts are in the description section of the video. -------------------------------------- You can quickly navigate through the videos using these chapters. 00:00 Intro 00:41 Video Outline 01:16 Introduction to Porous Media 02:11 Application areas of Porous Media 02:50 Design of a Porous Media: Theory 04:02 How to create random distribution of pores 04:21 MontCarlGen3D ver 1.0: Software for creating randomness in 3D 05:06 Material properties of Porous Media 05:24 Numerical case studies considered 06:32 Canonical equations for uniaxial tensile loading 07:11 The use of ABAQUS *EQUATION 08:05 Representatio of inplane shear deformation 08:54 How to extract stress-strain profile for a porous media 09:41 How to generate surface area for irregular shape 10:09 Use of MontCarlGen3DV1: Code to generate python script for model 11:25 ABAQUS: Generation of virtual domain of porous media 13:24 ABAQUS: Meshing of porous media 15:24 ABAQUS: Boundary conditions for porous media 18:35 ABAQUS: Results of simulations - uniaxial x-tensile 19:28 ABAQUS: Results of simulations - Inplane XY shear 20:14 ABAQUS: How to extract stress-strain plots 21:37 How to generate area of irregular shape with python script 24:24 Comparison of simulation results: Graphs and Effective Properties 25:09 Outro

[@serhatcos3746]

Thank you Dr. Michael

[@MichaelOkereke]

You are very welcome @serhat COS.

[@xuhu-ul9vn]

@@MichaelOkereke Dear Dr.Michael. Can you still provide 3Drves software? Thank you very much.

[@ZiruiOuyang]

That is so great! Thank you Dr. Michael. can u do a video about open voids?

[@MichaelOkereke]

Great suggestion!

[@samuelkefyalew5153]

Very supportive and unique point of view of ABAQUS simulation! God bless you!!! i downloaded your book just to follow you.

[@MichaelOkereke]

Hi @Samuel, thanks. I hope you enjoy the book, and do feedback me anything you want me to improve for future editions.

[@samuelkefyalew5153]

@@MichaelOkereke thanks. I found your book contents seems to be very supportive for my area of interest.

[@rajaktr8327]

Hello dr michael.. informative session.. thanks... How to apply the compressive boundary condition on porous media...

[@MichaelOkereke]

Hello @Raja, I will suggest you use the method shown here: kzbin.info/www/bejne/p5ukeXp9ftSYp6c. You simply need to change the direction of the load to make it a compressive loading.

[@王图图-d6z]

great video

[@MichaelOkereke]

Thanks!

[@tvify]

Hi Dr. Michael. Can you do a video for the case of random oriented fibre reinforced cement compoistes? Thank you

[@MichaelOkereke]

Hello @MechStuff, definitely, I will consider making such a video but that will be in the future. Thanks for your interest in the channel.

[@tutornick.iphysics]

Dear Dr.Michael, I was wondering if it was possible to model 3d fibrous porous media using ABAQUS? I am interested in using it in CFD simulation. Thank you.

[@MichaelOkereke]

Hello @Dr Nick, please can you suggest a journal article so I can assess what youean by fibrous porous media and then can answer the simulation question.

[@nuraqila2857]

Great video! Hi, Dr. Michael, I would like to ask, is it possible to create primitive or gyroid structures using imported coordinate txt file in Abaqus? That's mean, I designed the minimal surfaces in Matlab and get the coordinate, then import it in Abaqus. Can Abaqus visualize my minimal surface model?

[@MichaelOkereke]

Hello @Nur Aqila, I really do not know much about this topic to be able to advice you on what is or is not possible. It sounds like it is something I need to investigate more about to be able to give a definitive answer.

[@nuraqila2769]

@@MichaelOkereke Dear Dr Michael, is that possible way to calculate porosity in ABAQUS? For example, is it possible for ABAQUS to show me the porosity values of my model if I change certain parameters of my porous model.

[@r.sadeghpour]

Thanks for your helpful videos, can I get the stress-strain curve for lightweight porous stones (like: Perlite or LECA) by this method?

[@MichaelOkereke]

I believe so @R. Sadeghpour. I do not see why, as you are extracting the stress strain from reaction forces and displacement. These values are not dependent on material choice, but rather geometric positioning. Unless there is something I am missing, I believe you can use the method as well for the perlite.

[@r.sadeghpour]

@@MichaelOkereke So, can I model a porous cube and input the material properties of compressed perlite (perlite soil) to get the properties of expanded perlite (porous perlite)?

[@MichaelOkereke]

Hello @R. Sadeghpour, I am not sure I understand completely. Yes, you can create a porous cube following my video about. You can by all means input the properties of the virgin (uncompressed) perlite and then subject the model to a compressive loading. This should result in a new set of results which can be those of the compressed perlite. For a start, the modulus and strenght properties will be different from the virgin (uncompressed) perlite. I am not sure about the expanded perlite, unless that is another simulation which you can as well do, following the sequence I described above.

[@r.sadeghpour]

@@MichaelOkereke ok, thanks for your complete answer🙏🏻

[@vishalchauhan-ei7cu]

Can we do a compression test in sintered powder materials and get the relation of applied load and increase in density relation using ABAQUS?

[@MichaelOkereke]

Hello, I think this is possible. You have to get the right microstructure of the sintered powder material first, then create an RVE of that. Then you can of course follow the load application approach I showed in this video to set up and run the simulation. At the end, from the stress-strain plot, you will be able to get the maximum stress (corresponding to the applied load). With the density argument, I suppose you have to run the simulation for a few densities of the sintered powder, and then for each generate the applied / maximum stress. This will yield your desired applied load versus increase of density plot. This is what I think but you might be referring or querying something else.

[@fikirinijr6807]

Good work Prof, we appreciate for this but need to contact you how can get in touch with you?

[@MichaelOkereke]

Hello @Fikirini Jr, I will usually say it is best to contact me as a CM Video Insider. If you are a member of that group, then you can just write me via the welcome email. Here is the link to join the CM Videos Insider Group. cmvig.cmvideos.org. You will also see in the page (one of the newsletter articles) - my social media handles are all there and you can direct-message on any of those. I particularly use linked in via www.linkedin.com/in/miokereke.

[@ebukaokafor5337]

Please, how do i test the thermal conductivity of the composite using ABAQUS or python?

[@ebukaokafor5337]

i mean how to plot thermal conductivity as a function of temperature in those materials

[@MichaelOkereke]

This can involve running different tests for different temperatures and find the homogenised thermal conductivity. That's my idea.

[@khadijaet-taousy9737]

thanks fo sharing, could you please share with us the Python source code you've used or sphere positions.

[@MichaelOkereke]

Please look in the description, check the link here: cmvig.cmvideos.org/ (requires you to sign up first before accessing the requested resource).

[@samuelkefyalew5153]

The software link is not working why?

[@MichaelOkereke]

Hi @Samuel, thanks for the feedback. The MontCarlGen3Dv1 software is not available for public release at the point of releasing the video. I am packaging it together to make it ready. Over the next couple of days, I will make it available so you can use it. The other links though are working. Please check back later, in two days, and the link will go live.

[@tonyyang8209]

@@MichaelOkereke hey Dr. Okereke, i also want to ask the Montcarlgen 3D software. Is it available now？thanks so much. Could you please share the link？