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CAE4U
CAE4U
CAE4U
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This channel will feature videos on Engineering Design of Mechanical Components and their verification using Open Source Computed Aided Engineering (CAE) Software.

Hope this videos are helpful.
You can reach us at contactcae4u@gmail.com

Thanks,
CAE4U
Комментарии
@vinodlahire5
@vinodlahire5 18 дней назад
cool ,works like charm . I had multiple failed attempts with non universal package for ubuntu 20 . Glad i cam across this before waste more time and eventually give-up .. A huge thumbs up !!!
@cae4u125
@cae4u125 18 дней назад
Glad to know our post was helpful!!.
@kasuora6233
@kasuora6233 2 месяца назад
Why you downlaod linux universal into Ubuntu 20.04???
@cae4u125
@cae4u125 2 месяца назад
In our experience, that was the version which worked well. Others had dependency issues and challenging to resolve. The posted method seems to be easy option
@ananayjoshi
@ananayjoshi 2 месяца назад
Awesome video, can you show how to model a door hinge?
@cae4u125
@cae4u125 2 месяца назад
Glad to know you liked our video. Please send more details to contactcae4u@gmail.com. we will try our best.
@Zachthesloth
@Zachthesloth 3 месяца назад
Excellent video! Thank you very much for your excellent work.
@cae4u125
@cae4u125 3 месяца назад
Thank you. Glad to know you liked our video.
@Azmk77
@Azmk77 4 месяца назад
Thanks for the videos. I'm working on similar cases, and this is a very good example, albeit not quite complete. I'm much more familiar with Windows' CFD software than Linux's OpenFOAM. Would you entertain questions if I buy/download the original case from that website? Thanks in advance
@cae4u125
@cae4u125 4 месяца назад
Glad to know you liked our work and we are hopeful in providing assistance. Please write to contactcae4u@gmail.com with details on the help you are looking for.
@suriyagowtham5453
@suriyagowtham5453 5 месяцев назад
Kindly post the video for case set up and simulation
@cae4u125
@cae4u125 5 месяцев назад
Solved case files are available for case set up and they can be obtained from the link in description. Running the simulation is then straightforward.
@suriyagowtham5453
@suriyagowtham5453 5 месяцев назад
Can I have a case setup file for my reference
@cae4u125
@cae4u125 5 месяцев назад
Please refer the link in description to obtain the solved case. Hope it helps.
@dhruvshah8310
@dhruvshah8310 5 месяцев назад
Hello, I'd like to learn Premixed Combustion using Openfoam, can you please teach me through some paid classes if that's possible?
@cae4u125
@cae4u125 5 месяцев назад
Hi, At this point a structured class is not available. However, link to case file is available in description. It is a good starting point to learn premixed combustion simulation for nominal price. Hope it helps.
@Zimbob2424
@Zimbob2424 5 месяцев назад
Thanks, never could get a simple install on those tar.gz files, now that for me is just as easy as .deb. I'll bookmark this for future reference. thanks again and will be looking to see if you have other tutorials for Salome
@cae4u125
@cae4u125 5 месяцев назад
Glad to know you liked our video. Let's us know if there are any specific area to cover.
@Zimbob2424
@Zimbob2424 5 месяцев назад
@@cae4u125 lol, yeah some basic navigation for salome. I started with Blender and when I used free cad I was able to set the viewer to blender controls. But just basics to start with. salome looks much better than freecad. thanks for the response. If you do have those tutorials I didn't see them.
@ajarivas72
@ajarivas72 7 месяцев назад
Very nice lecture and simulation.
@cae4u125
@cae4u125 7 месяцев назад
Thank you
@djdelta777
@djdelta777 7 месяцев назад
Is this geometry amongst the calculix examples? Could you do a video showing how to set it up?
@cae4u125
@cae4u125 7 месяцев назад
No, This geometry is not amongst calculix examples. This is self created. Yes, we can plan for a tutorial video. Is there anything specific that you want us to cover?
@djdelta777
@djdelta777 7 месяцев назад
@@cae4u125 Yes maybe something without some of the assumptions, say with pre-stress.
@djdelta777
@djdelta777 7 месяцев назад
Also for your thermal simulation, can you do something thermo-mechanical, in an aero-engine application if possible? An assembly with bold preload in the first load step, then mechanical, then thermal loading for example to make something even more practical. I just want to see something in Calculix with coupled (or rather segregated) physics in a few load steps.
@cae4u125
@cae4u125 7 месяцев назад
Thank you for sharing the details. When you say coupled thermo-mechanical analysis,we hope, you mean steady state conditions while the transient response could be more interesting. Still it would be Computationally large case to accommodate multiple load case of a 3d non-linear model with our current resources, for reasonably good result (This is the reason why we simplify our model) . However, We will try our best.
@djdelta777
@djdelta777 7 месяцев назад
@@cae4u125 yes steady state will be fine. Any simple geometry good too. Coupled would be nice, but sequentially loaded is probably better actually. Thanks looking forward to it 👍🏽
@LT72884
@LT72884 7 месяцев назад
Not bad. Now do you have any tutorials of how to take this part, import it into gmsh, and then use calculix to do fea and crack propagation on it? Or tutorial on how to use calculix in general? Thanks :)
@cae4u125
@cae4u125 7 месяцев назад
For crack propagation, Not yet. But are you looking for arbitrary loding? . We are not sure if mixed mode multi axial loading is supported in calculix. Since it is twisted body the induced stress field can be complex even for simple loading.can you Let's know the simulation objective. We can see what best we could do. Further, Our experience is that there is huge dispersion in simulation vs actual test. If you have any validation case, that would be very interesting to take up. For general use of calculix, you can even use FreeCad FEM workbench. You can check our previous video, ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-qz4ZhjQ2q3Y.html. Hope it helps.
@LT72884
@LT72884 7 месяцев назад
@@cae4u125 im just wanting to learn calculix and gmsh outside of freecad for more advanced fea. For cracks, i ask because newest version documentation for chapter 6.29 talks about it is all :) I just started freecad and fea about a week ago. Still learning but now i want to do more like cycles to failure, openfoam, etc etc
@cae4u125
@cae4u125 7 месяцев назад
Ok. Then we recommend you to watch our previous videos. With those you will understand various aspects of performing FEA and CFD simulations using Calculix and Openfoam. Some of the complementary working files are available at nominal price for practice and experimentation. Life predicting calculations are bit tricky. We are actually planning to do one but only after validation. We hope to do it soon.
@LT72884
@LT72884 7 месяцев назад
@@cae4u125 great, thank you :)
@cae4u125
@cae4u125 7 месяцев назад
You are welcome.
@MUSTAFA_AHMED_YAHYA
@MUSTAFA_AHMED_YAHYA 8 месяцев назад
That is nice, i am also using CalculiX, pure CGX and CCX. It is a nice software.
@cae4u125
@cae4u125 8 месяцев назад
Glad to know you are using Calculix. Lately we observed FreeCAD, Salome and Calculix form a powerful combination. It has potential to become industrial quality software. However it still needs extensive Validation.
@TerragonCFD
@TerragonCFD 11 месяцев назад
Nice Simulation 🙂
@cae4u125
@cae4u125 11 месяцев назад
Thank you.
@user-hs3dg8jy3t
@user-hs3dg8jy3t 11 месяцев назад
Hi, Is this explicit dynamic analysis?
@cae4u125
@cae4u125 11 месяцев назад
Implicit analysis. Though,It could be done using explicit dynamics also.Luckily we could trace some files, if you are interested, please drop an email to contactcae4u@gmail.com
@gustavosilva-o2z
@gustavosilva-o2z Год назад
I have a question USING OPENFOAM : let's suppose I have a pipe of 2 meters ( for the analysis) and 1-inch internal diameter, 2.5 mm of thickness, made of PVC, inlet speed 5 mts/s, rainolds> 4000, 32 °C., 6 psi. And owing to the turbulent flow there is an FSI (fluids structure interaction), it is possible to know : 1) the displacement depending of frequency at any point of the pipe?, graphics? data? 2) the highest vibrations ( resonance) point depending of the fluid velocity} 3) And a modal analysis) 4) using time dependant?
@cae4u125
@cae4u125 Год назад
Using openfoam alone would be cumbersome. It would be worth checking if the coupling is stronge. If so precise coupler would be a good choice. You can couple CFD and FEA software to do the fsi. If the coupling is weak, then you can perform transient flow analysis using openfoam and perform fft to calculate the frequencies. Then seperately perform a modal analysis in FEA software like calculix, and check for the possibility of resonance.
@gustavosilva-o2z
@gustavosilva-o2z Год назад
Hum , thank for your ans, I am not sure if i understood: 1) What to you mean by "coupling" "or "coupler", 3) "weak coupling" , and When you said "You can couple CFD and FEA software to do the fsi." you mean 3) OpenFOAM is not far enough to solver this kind of problems, and 4) should I use other software" if so which you recommend me..CALCULIX IS FREE.? , fft calculation can be performed in OPENFOAM TOO? @@cae4u125
@gustavosilva-o2z
@gustavosilva-o2z Год назад
Greate job, thank for sharing
@cae4u125
@cae4u125 Год назад
Glad to know, you liked our work.
@aitnic3617
@aitnic3617 Год назад
Hello, very good job! Would it be possible to have the necessary files to run it on my computer?
@cae4u125
@cae4u125 Год назад
@Aitnic, Glad to know that you liked our video. Unfortunately, We couldn't retrieve the files.
@Zachthesloth
@Zachthesloth Год назад
Absolutely incredible work! Thank you so much. Do you still prefer to do work this way with Salome now that PrePoMax exists? If you don't know about it you should check it out.
@cae4u125
@cae4u125 Год назад
Unfortunately PrePoMax doesn't seems to be available for Linux. Otherwise we are aware of PrePoMax and it is very nice software.
@user-hs3dg8jy3t
@user-hs3dg8jy3t Год назад
Fantastic vide!!! Could material damping be accounted for like in a viscoelastic solid? To my knowledge viscoelasticity is not possible in calculix? I may be wrong
@cae4u125
@cae4u125 Год назад
Thank you A for your comments. You can try using MFront for modelling viscoelastic behaviour.
@user-hs3dg8jy3t
@user-hs3dg8jy3t Год назад
@@cae4u125 Thanks for the reply, I'll check it out. Could you maybe share this case setup?
@cae4u125
@cae4u125 Год назад
We couldn't retrieve the files. Could you can try following the video.
@atharvadhore
@atharvadhore Год назад
Again similar geometry is for the Fossee internship task
@cae4u125
@cae4u125 Год назад
Glad to know. This is also industrial need.
@abdelkaderhemaizia6063
@abdelkaderhemaizia6063 8 месяцев назад
Can you provid me the boundary condition please
@cae4u125
@cae4u125 8 месяцев назад
Please refer the description of video. You can obtain all necessary details from Gumroad link.
@abdelkaderhemaizia6063
@abdelkaderhemaizia6063 8 месяцев назад
@@cae4u125 hi I set up all the boundary conditions exactly the same on the video but there is no flame, and I use species transport for this, have you any suggestion?
@cae4u125
@cae4u125 8 месяцев назад
We hope you could be greatly benefitted by the case files available in gumroad. It can be obtained from the link in description. They are good starting point resource. Please try it out.
@atharvadhore
@atharvadhore Год назад
That was the Fossee summer fellowship problem statement
@cae4u125
@cae4u125 Год назад
Good to know.
@subhrajitroy1477
@subhrajitroy1477 Год назад
any idea where I can get the case files (or any other documentation related to this project)?
@cae4u125
@cae4u125 Год назад
Please look into our latest video, compressible supersonic flow over bullet. This is similar case. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-cebakq7jGQY.html
@adamshinbrot
@adamshinbrot Год назад
Very helpful. Thank you.
@cae4u125
@cae4u125 Год назад
Glad it was helpful!
@pratyushmohanty235
@pratyushmohanty235 2 года назад
can you please provide the necessary files it would be of great help
@cae4u125
@cae4u125 Год назад
We are trying to get those file and will be made available, once we get them.
@4pingenieria81
@4pingenieria81 2 года назад
Very interesting video, have you made different simulations using shell elements with CalculiX? Have you seen some weird results using simmetry boundary conditions? Best regards
@cae4u125
@cae4u125 2 года назад
We haven't made any other simulation using shell element with symmetry boundary condition. If there is any specific case or its description, we would like to explore. You can reach us at contactcae4u@gmail.com.
@4pingenieria81
@4pingenieria81 2 года назад
@@cae4u125 , as far I remember, using second order elements, and mostly when they are curved as in a vessel, sometimes there are results in the simmetric model that not agree with the full model, or other solver.
@cae4u125
@cae4u125 2 года назад
We tried with very simple shell and solid model, representing thin shell. If the symmetric BC's (Translation and rotations) are correctly given then the results are comparable otherwise we observed strange contour plot. But the max values appeared comparable though. If there is any sharable test cases still, in which the problem was observed, we can certainly look into it.
@taoyin2071
@taoyin2071 3 года назад
Very good tutorial for using open source FE software, thanks a lot!
@cae4u125
@cae4u125 3 года назад
Glad to know you like it!
@taoyin2071
@taoyin2071 3 года назад
Thanks for sharing
@cae4u125
@cae4u125 3 года назад
Thanks for watching. Glad to know you liked it!
@Zachthesloth
@Zachthesloth 3 года назад
Outstanding work. I'd love to see what the preprocessing of this would look like, or if there are any kinds of open source methods to do things like bullet penetration analysis. I've also found quite a few of your other videos and I must say I'm very impressed. If you'd be willing to try figuring out a way to do an assembly with a few parts, attached together with things like RBE3s and 1D elements representing fasteners, that would be swell. Keep it up!
@cae4u125
@cae4u125 3 года назад
@ZachTheSloth Thanks for your encouraging comments. For Bullet penetration analysis, you check impact.sourceforge.net/index_us.html. we will try to put together a video on analyzing fasteners.
@sajidashamsher8229
@sajidashamsher8229 3 года назад
Can you show how import it in terminal by using 0 constant and system fiels ?
@cae4u125
@cae4u125 3 года назад
Calculix does not use 0 Constant and system files.
@sajidashamsher8229
@sajidashamsher8229 3 года назад
@@cae4u125 i have msh files by using gmsh . So i need these files. Can you help for this ?
@cae4u125
@cae4u125 3 года назад
Can you describe your case?. If it can't be provided here, you can write to contactcae4u@gmail.com.
@sajidashamsher8229
@sajidashamsher8229 3 года назад
@@cae4u125 if i send you geo file then can you convert it into blockmesh file?
@cae4u125
@cae4u125 3 года назад
Mesh generated in gmsh can be converted to Openfoam compatible mesh using gmshToFoam utility.
@saurabhtalele1537
@saurabhtalele1537 3 года назад
Who is enthusiastic in cae, one who has power to use open cae.... And that you sir
@cae4u125
@cae4u125 3 года назад
Thank you Saurabh.
@saurabhtalele1537
@saurabhtalele1537 3 года назад
Nice tutorial sir😎🥳
@cae4u125
@cae4u125 3 года назад
Thank you Saurabh.
@Ibrahim-tv7rv
@Ibrahim-tv7rv 3 года назад
Beautiful Do you recommend me to learn this and use freeCad to make structural analysis (I am interested in pv systems structures)? The normal people use Staad pro, but it is not free.
@cae4u125
@cae4u125 3 года назад
@Ibrahim 123, Glad that you liked our video. Yes, For complex models Freecad FEM workbench is very helpful. It is a good software to learn and use.
@leonidsteblyanko6536
@leonidsteblyanko6536 3 года назад
Good afternoon, Very useful video, I learned how to build graphs in Calculix. I started studying GMSH, I don't know how to connect 3d grid nodes with rod elements. Tell me if GMSH has commands for this. My model. //+ Point(1) = {0, -0, 0, 1.0}; //+ Point(2) = {6.0, 0.0, 0, 1.0}; //+ Point(3) = {0.0, 0.5, 0, 1.0}; //+ Point(4) = {6, 0.5, 0, 1.0}; //+ Line(1) = {1, 3}; //+ Line(2) = {3, 4}; //+ Line(3) = {4, 2}; //+ Line(4) = {2, 1}; //+ Line Loop(1) = {1, 2, 3, 4}; //+ Plane Surface(1) = {1}; //+ Transfinite Surface {1} = {3, 4, 2, 1}; //+ Transfinite Line {4, 2} = 41 Using Progression 1; //+ Transfinite Line {1, 3} = 6 Using Progression 1; //+ Extrude {0, 0, 0.2} { Surface{1}; } //+ Transfinite Line {9, 4, 7, 2} = 21 Using Progression 1; //+ Transfinite Line {11, 6, 1, 12, 20, 8, 3, 16} = 6 Using Progression 1; //+ Transfinite Surface {13}; //+ Transfinite Surface {21}; //+ Transfinite Surface {26}; //+ Transfinite Surface {1}; //+ Transfinite Surface {17}; //+ Transfinite Surface {25}; //+ Recombine Surface {13, 21, 1, 26, 17, 25}; //+ Transfinite Volume{1} = {1, 5, 6, 3, 2, 14, 10, 4}; //+ Transfinite Line {11, 12, 20, 16} = 5 Using Progression 1; //+ Transfinite Line {6, 1, 3, 8} = 11 Using Progression 1; //+ Transfinite Line {2, 7, 4, 9} = 41 Using Progression 1; //+ Transfinite Surface {26}; //+ Transfinite Surface {1}; //+ Transfinite Surface {13}; //+ Transfinite Surface {21}; //+ Transfinite Surface {25}; //+ Transfinite Surface {17}; //+
@cae4u125
@cae4u125 3 года назад
Hi Leonid, What you are asking is bit tricky but possible. Below is an example. //+ Point(1) = {0, 0, 0, 1.0}; //+ Point(2) = {0, 0, 0, 1.0}; //+ Extrude {50, 0, 0} { Point{1}; Layers{5}; Recombine; } //+ Extrude {0, 50, 0} { Curve{1}; Layers{5}; Recombine; } //+ Extrude {250, 0, 0} { Curve{4}; Layers{25}; Recombine; } //+ Extrude {250, 0, 0} { Curve{6}; Layers{25}; Recombine; } //+ Extrude {50, 0, 0} { Curve{10}; Layers{5}; Recombine; } //+ Extrude {0, 250, 0} { Curve{2}; Curve{8}; Curve{12}; Curve{16}; Layers{25}; Recombine; } //+ Extrude {0, 250, 0} { Curve{18}; Curve{22}; Curve{26}; Curve{30}; Layers{25}; Recombine; } //+ Extrude {0, 50, 0} { Curve{34}; Curve{38}; Curve{42}; Curve{46}; Layers{5}; Recombine; } //+ Extrude {0, 0, 500} { Point{5}; Point{9}; Point{25}; Point{21}; Layers{25}; Recombine; } //+ Physical Point("Fix") = {39, 38, 37, 36}; //+ Physical Curve("Leg") = {66, 67, 68, 69}; //+ Physical Surface("Load") = {41, 45, 29, 25}; Mesh using 3D option. Export to .inp file. Edit the exported .inp file, ensure the line element type is B23 or B23R. if not modify it manually. Retain only the beams you want. Hope it helps. if you need more help write to contactcae4u@gmail.com. Note: By mistake point 1 got duplicated, you can remove it. Regards, CAE4U.
@leonidsteblyanko6536
@leonidsteblyanko6536 3 года назад
@@cae4u125 thank you so much for your prompt response! I will understand further
@saurabhtalele1537
@saurabhtalele1537 4 года назад
Sir, Yes this are knowledgeable tutorial
@cae4u125
@cae4u125 4 года назад
Hi Saurab,Thanks for your comment.