Hi! I´m new with the PFC software and i´m trying to learn practicing and watching videos. Would you please share the files used in this video to practice? Thanks.
Thanks for the demo, however, when I tried to run the dat file, an error occured says 'Sum of volume fractions is not unity ! While processing line 71 of file C:/rock_slide.dat.' May I know why it did not run properly?
It looks like you made some modifications to the file. If you have done so please check the sum of fractions is 1 in total. As in my file from bin 1-6 the total volume fraction is (0.03+0.12++0.3+0.4+0.12+0.03)=1. Now check yours.
the error is raised as the total volume fraction sum is not 1. As seen in my code the sum of volume fraction is one. That is must as it means you know what is the amount of each group in the box, so there is no unknown material generated. If this error is coming to your script check for typing mistake.
You can use software such as solidwork, rhino if you have a complex geometry (so that you can import using a .stl file) otherwise if its a simple geometry, you can build it using wall commands in the PFC itself
Since PFC is based on Distinct Element Method, there is no direct method for particle crushing. However, you have freedom in your modelling technique. You can either model it as a bonded material with small particles and parallel bond of sufficient strength and once that strength is reached the bond will fail and material will disperse, this can be treated as particle crushing or disintegration.
Yes you can. However you need to understand the limitations of the software in terms of particle sizing, physics behind the simulation and dry or wet simulation.
Hello,sir. May i ask for some questions? I´m new with the PFC software .Thank you for this Rockfall simulation. When I use Rhinoceros software to process the 3D mesh to generate a .stl or .dxf file, I import it into PFC 5.0 with the following code "geometry import 'nanpin.stl', wall import geometry nanpin clean nothrow ". the result of the wall in the generation of the code but there is an error 'no facets in the specified range'. based on the above situation. May I ask you how to solve this problem? thank you,sir. I am also trying to scale down the 3D mesh in Rhinoceros. but the result is not as good as I expected! Thank you,sir.
I do. but as this one is a very good commercial software I have some interest in it. So, mail me at (avinashsajwan.jnv22@gmail.com) and I will tell you the site.
Hello Engineers mania The video is very helpful. we are working on a flow simulation project using PFC. If You can help with that it would be great. let me know how can i contact you . Thanks.
@@engineersmania7353 so, in the hopper flow example, we are thinking to insert the water/fluid in between the particles. to find what effect the water might have on the flow of particles like velocity. you help would be great thanks
@@jaswanthgv7093 If particles only are going to be affected by water flow then the simulation is somewhat easier as that can be done by a basic code representing the physics of fluid flow but if you want to have an interaction between particles and water with each other simultaneously then you will have to use a coupled approach of using DEM with CFD(Computational Fluid Dynamics).
@@engineersmania7353 thank you for that We are little new to the PFC software. If you can help us with this, it would be great and appreciated. If are willing, you can contact via mail to tjk3144@gmail.com Thank you
Hello, Excellent video, I´ve tried to replicate the commands and everything is ok but I have problems with the clump distribute porosity 0.15 diameter number-bins 6 box -30 30 ... bin 1 size 16 15 volume-fraction 0.03 group 'clump1' template 'clump1' ... bin 2 size 15 14 volume-fraction 0.12 group 'clump2' template 'clump2' ... bin 3 size 14 13 volume-fraction 0.30 group 'clump3' template 'clump3' ... bin 4 size 13 12 volume-fraction 0.40 group 'clump4' template 'clump4' ... bin 5 size 12 11 volume-fraction 0.12 group 'clump5' template 'clump5' ... bin 6 size 11 10 volume-fraction 0.03 group 'clump6' template 'clump6' ... clump attribute density 3000 damp 0.9 I got the error"unused command (clump), I´m confused the reason for this error because on the PFC´s web it is ok, Can I help me ?
I have uploaded my data file in the description below so you can try to compare it with what you typed. try to access and run it. I hope the error goes away. In your code, if this is error is coming and the code is still running that means it's a warning rather than an error and that means that you have provided some extra command which you are not using. I hope it settles your problem.
your video helped me a lot. keep it up sir.
Keep watching
Hi! I´m new with the PFC software and i´m trying to learn practicing and watching videos. Would you please share the files used in this video to practice? Thanks.
Thank you. I have added the files required for your convenience. However, go through the video if you need explanations too.
Thanks for the demo, however, when I tried to run the dat file, an error occured says 'Sum of volume fractions is not unity ! While processing line 71 of file C:/rock_slide.dat.' May I know why it did not run properly?
It looks like you made some modifications to the file. If you have done so please check the sum of fractions is 1 in total.
As in my file from bin 1-6 the total volume fraction is (0.03+0.12++0.3+0.4+0.12+0.03)=1.
Now check yours.
You can change line 77 to this and it'll work. ： bin 6 size 11 10 volume-fraction 0.03 group 'clump6' template 'clump6'
Thanks for the video. It was really helpful. Could you do a simple tutorial video on how to conduct direct shear test with clumps. Many thanks
hello, the error i am facing is "Sum of volume fractions is not unity !"? What does this mean?
""clump distribute porosity 0.15 diameter number-bins 6 box -30 30 -30 30 -30 30 ...
bin 1 size 16 15 volume-fraction 0.03 group 'clump1' template 'clump1' ...
bin 2 size 15 14 volume-fraction 0.12 group 'clump2' template 'clump2' ...
bin 3 size 14 13 volume-fraction 0.30 group 'clump3' template 'clump3' ...
bin 4 size 13 12 volume-fraction 0.4 group 'clump4' template 'clump4' ...
bin 5 size 12 11 volume-fraction 0.12 group 'clump5' template 'clump5' ...
bin 6 size 11 10 avolume-fraction 0.03 group 'clump6' template 'clump6'"", While using this
the error is raised as the total volume fraction sum is not 1. As seen in my code the sum of volume fraction is one. That is must as it means you know what is the amount of each group in the box, so there is no unknown material generated. If this error is coming to your script check for typing mistake.
Hello, do you know how to couple PFC with DualSPHysics bidirectionally? Thanks
I know it has to be done using a handshake algorithm provided in the pfc manual. However, i was not very successful in doing that.
Hello,
How can we prepare the perticle template of known particle shape and size.
You can use software such as solidwork, rhino if you have a complex geometry (so that you can import using a .stl file) otherwise if its a simple geometry, you can build it using wall commands in the PFC itself
Sir , could you please how pfc software can be used for particle crushing?
Since PFC is based on Distinct Element Method, there is no direct method for particle crushing. However, you have freedom in your modelling technique. You can either model it as a bonded material with small particles and parallel bond of sufficient strength and once that strength is reached the bond will fail and material will disperse, this can be treated as particle crushing or disintegration.
Hello. Can this software be used for landslide simulation based on photogrammetric 3D model data?
Yes you can. However you need to understand the limitations of the software in terms of particle sizing, physics behind the simulation and dry or wet simulation.
Hello,sir. May i ask for some questions?
I´m new with the PFC software .Thank you for this Rockfall simulation. When I use Rhinoceros software to process the 3D mesh to generate a .stl or .dxf file, I import it into PFC 5.0 with the following code "geometry import 'nanpin.stl', wall import geometry nanpin clean nothrow ". the result of the wall in the generation of the code but there is an error 'no facets in the specified range'. based on the above situation. May I ask you how to solve this problem? thank you,sir. I am also trying to scale down the 3D mesh in Rhinoceros. but the result is not as good as I expected!
Thank you,sir.
replied
Is it possible to do this simulation in Altair EDEM.
Yes it can be done there too. But the syntax and code will change but the crus of problem remains same.
How long did it take to calculate this case?
There is no simulation that is being run in this video. This is just a preparation video that is utilized on a later stage.
Hello
By any chance do you know where can I download cracked version of the PFC.
I do. but as this one is a very good commercial software I have some interest in it.
So, mail me at (avinashsajwan.jnv22@gmail.com) and I will tell you the site.
good video. it will be better if you can add a caption of english
Thank you for your feedback. I will try it
Hello Engineers mania
The video is very helpful. we are working on a flow simulation project using PFC. If You can help with that it would be great. let me know how can i contact you .
Thanks.
let me know the brief details of your flow problem.
@@engineersmania7353 so, in the hopper flow example, we are thinking to insert the water/fluid in between the particles. to find what effect the water might have on the flow of particles like velocity.
you help would be great
thanks
@@jaswanthgv7093 If particles only are going to be affected by water flow then the simulation is somewhat easier as that can be done by a basic code representing the physics of fluid flow but if you want to have an interaction between particles and water with each other simultaneously then you will have to use a coupled approach of using DEM with CFD(Computational Fluid Dynamics).
@@engineersmania7353 thank you for that
We are little new to the PFC software.
If you can help us with this, it would be great and appreciated.
If are willing, you can contact via mail to tjk3144@gmail.com
Thank you
Hello, Excellent video, I´ve tried to replicate the commands and everything is ok but I have problems with the clump distribute porosity 0.15 diameter number-bins 6 box -30 30 ...
bin 1 size 16 15 volume-fraction 0.03 group 'clump1' template 'clump1' ...
bin 2 size 15 14 volume-fraction 0.12 group 'clump2' template 'clump2' ...
bin 3 size 14 13 volume-fraction 0.30 group 'clump3' template 'clump3' ...
bin 4 size 13 12 volume-fraction 0.40 group 'clump4' template 'clump4' ...
bin 5 size 12 11 volume-fraction 0.12 group 'clump5' template 'clump5' ...
bin 6 size 11 10 volume-fraction 0.03 group 'clump6' template 'clump6' ...
clump attribute density 3000 damp 0.9
I got the error"unused command (clump), I´m confused the reason for this error because on the PFC´s web it is ok, Can I help me ?
I have uploaded my data file in the description below so you can try to compare it with what you typed. try to access and run it. I hope the error goes away. In your code, if this is error is coming and the code is still running that means it's a warning rather than an error and that means that you have provided some extra command which you are not using. I hope it settles your problem.
Kuchh samjh me nhi aaya ..par achha tha 😅😅
isi liye to aapke liye video bana re hai..
these are complex engineering problems.