@8:58 the shape factor should be +1 instead of -1 because in LS Dyna, *LOAD_BODY_Y assumes the force to act in the direction opposite to the direction of applied acceleration. Here, since acceleration is defined in the +y direction so its corresponding force will act in the -y direction automatically. SF=-1 will make the gravity to act in upward direction.
really your channel so good, your Hypermesh tutorials Explanation also very good. you provide to us hypermesh file for practice. There is no one on TH-cam Provide like this. If you don't mind could you crate 2-3 Hypermesh Tutorial video on industrial problem statement
Good afternoon. Thank you very much for the tutorial video, thanks to them I have become much better at modeling. I have one questions for you: 1) Please advise which material model can be used to model a polymer material (sealant, mastic), for example, such as is used for vibration isolation of the car body or for sealing the seams of the cooling system of the car. I am very grateful and grateful to you in advance. You're doing a wonderful job!!
Hello Brother! Thanks for another helpful video. I have a doubt that how can I know which specific card image should I use out of various card images while assigning sections, materials, etc. in my LS DYNA model. Thank You
Hi Ashwani, This knowledge comes only through experience. Try to perform as many analyses as possible and use different settings for each case. That way, you will get a better understanding of all the control cards available.
Try using a constant value of 1 in the load curve for a time duration greater than total runtime of the analysis. Then use the scale factor equal to gravitational acceleration value. This may seem weird but it works with LS Dyna.
Excellent video! thank you! I have a general question - where do i get the data for Mass Density and other parameters for various materials? I have looked thru LS-DYNA docs but didn't see this info readily available. Would appreciate your help!
Hey Paul, This data is indeed hard to find. It is only available on some online material databases. If you know such material databases, you will have no trouble in getting all the required material parameters.
what is the unit of stress in the in the HyperView, when we are seeing the bird strike result in the legend. I think displacement unit is mm. But I am not sure about stress unit. another question is in my analysis my total energy line is not straight. it is decreasing. Can you suggest solution.
Hi bro, Thank you for the video. But can you make a video about definition of brittle material. Bcoz usually we will have data from paper but not sure about what values to use in simulation and what effects it will have on simulation
Fillets and chamfers should be removed for every analysis unless the results are getting significantly affected by stress concentration along geometry edges. In that case, you can use the geometry with fillets and chamfers.
If we see the graph for total energy it was slightly going up. But total energy is always constant. What could be the reason behind slight positive slope of that graph?
Superb Video, however when i tried, i got this following error: Error 10125 (KEY+125) Checking PART and SECTION definition input. PART ID 1 with SECTION ID 0 does not exist. This is PART 1 in the order of input. Any idea why?
Thanks for watching! This error is related to the parts in the model. Please check whether every part has the correct card image, material and section assigned. This will resolve the issue.
@@Aeroswap Thanks bro. I did the silly mistake of solving the downloaded deck file instead of what I've worked on. Got solved. Is it possible to connect you on LinkedIn?
Hi bro nice video I have one error while run the simulation In message it shows " Error part ID 2 with damage can be used with one point solid elements- type 1 only"
That is weird. This error should not occur if you follow all the steps correctly. Please recheck your model to see if it is set up exactly as per the video.
After exporting to Lsdyna manager.. Error like input file does not exist after following every step correctly and it's showing please define input file names or change defaults. Please suggest useful
@@Aeroswap thanks for the quick reply. Sir, I beleive HM 13 does not have - find option with CNTRL +F. Can you please tell me the traditional way to find this material card?
If you are asking about the glass properties, it is freely available on the internet. As for the actual material card information, I referred LS Dyna user manual.
Yes, Hypermesh is a preprocessor and postprocessor that works with multiple solvers. It is just to set up the analysis and postprocess the results. The solver is what actual computes the results.
Namaste anna I am final year. currently searching for topics for the major project . We wanna do in CAE field only. Can u suggest us something suitable, becz I am quite confused
Hello Giriraj, CAE is a very vast domain with many opportunities in specific fields. Your final year project must be built on your strengths and interests. I suggest you to explore the various options available in CAE field and then decide a suitable project. Good luck!
@@Aeroswap hi, Like we just had bit of ansys basics in ciriculum. Nothing like specifically intrested and yet to learn May be topics on crash, durability, topological optimization friend was telling 🤨
As correctly mentioned by Aeroswap, the field of CAE is vast and the selection of your final year project will depend on your personal interests, or the future work path you would like to consider applying to. I'll try to help by proposing the following possible projects: - Composite optimization of a given structure - Non linear buckling of a composite panel - Study of delamination or crack propagation in a aerospace structure (for example a stiffened panel) Good luck with your choice.
![Dynamic Crash Analysis [Hypermesh-LS DYNA Tutorial]](http://i.ytimg.com/vi/ItdtwIoGj28/mqdefault.jpg)
![Dynamic Crash Analysis [Hypermesh-LS DYNA Tutorial]](/img/tr.png)
![Dynamic Impact Analysis using Hypermesh [Radioss Tutorial]](/img/n.gif)
Excellent explanation of the process (as always!). Thank you.
Thanks a lot :)
@8:58 the shape factor should be +1 instead of -1 because in LS Dyna, *LOAD_BODY_Y assumes the force to act in the direction opposite to the direction of applied acceleration. Here, since acceleration is defined in the +y direction so its corresponding force will act in the -y direction automatically. SF=-1 will make the gravity to act in upward direction.
I think, after the sphere hits the bottle few elements flew upwards. May be due to this
@@TheSundara44 yes, the simulation is wrong
Great catch! Thanks for pointing that out. I will see if I can correct that in a follow up video.
really your channel so good,
your Hypermesh tutorials Explanation also very good.
you provide to us hypermesh file for practice.
There is no one on TH-cam Provide like this.
If you don't mind could you crate 2-3 Hypermesh Tutorial video on industrial problem statement
Thanks Onkar! I'm glad my videos helped you :)
Good afternoon. Thank you very much for the tutorial video, thanks to them I have become much better at modeling. I have one questions for you:
1) Please advise which material model can be used to model a polymer material (sealant, mastic), for example, such as is used for vibration isolation of the car body or for sealing the seams of the cooling system of the car. I am very grateful and grateful to you in advance. You're doing a wonderful job!!
Professional explanation ... Hypermesh software
Thank you!
Grt sir. Clearly explained...
Thank you :)
loved it,bro. it's very hard to find a good tutorial video.. zabardast. please make more
Thank you!
Thanks making such videos....these are very helpful
Can u please make a video of bullet impact on laminated composite
Thanks for the suggestion. I will work on it 👍🏻
Very beneficial! Thankyou
Thank you Tanya :)
Excellent tutorial sirr
Thank you :)
superb expalanation. keep it up
Thank you!
Nice to learn through this video. I don't have LS Dyna User Profile in my Hypermesh. How can I proceed with this analysis?
Which version of Hypermesh are you using ?
Hello Brother! Thanks for another helpful video. I have a doubt that how can I know which specific card image should I use out of various card images while assigning sections, materials, etc. in my LS DYNA model. Thank You
Hi Ashwani,
This knowledge comes only through experience. Try to perform as many analyses as possible and use different settings for each case. That way, you will get a better understanding of all the control cards available.
Error is like = Load Curve ID 0 is not permitted... Reference : y-base acc. Body force
Try using a constant value of 1 in the load curve for a time duration greater than total runtime of the analysis. Then use the scale factor equal to gravitational acceleration value.
This may seem weird but it works with LS Dyna.
@@Aeroswapsolved... actually I forgot to fill LCID option in gravity.....and thank you for reply brother....great work !
Sorted then! Glad the video was helpful :)
Once again well done bro
Thank you!
Which steps have you followed to be professional?
Excellent video! thank you! I have a general question - where do i get the data for Mass Density and other parameters for various materials? I have looked thru LS-DYNA docs but didn't see this info readily available. Would appreciate your help!
Hey Paul,
This data is indeed hard to find. It is only available on some online material databases. If you know such material databases, you will have no trouble in getting all the required material parameters.
Hi there. Do you have any pointers to such a database ? I looked at MatWeb which didn’t have the details of all parameters. Thanks in advance!
I do not know of any specific database. For this analysis, the values were taken from a research paper.
what is the unit of stress in the in the HyperView, when we are seeing the bird strike result in the legend. I think displacement unit is mm. But I am not sure about stress unit. another question is in my analysis my total energy line is not straight. it is decreasing. Can you suggest solution.
Hi bro,
Thank you for the video. But can you make a video about definition of brittle material. Bcoz usually we will have data from paper but not sure about what values to use in simulation and what effects it will have on simulation
Thanks for the suggestion. I will see what I can do 👍🏻
Hi can u shear your final model .k file becoz I can't get same results when falling this procedure
Hi can u help me to do simulation of gypsum board subject to impact loading?
Bro do a video on how to deal with fillets and chamfer in analysis. Should we delete them or keep
Fillets and chamfers should be removed for every analysis unless the results are getting significantly affected by stress concentration along geometry edges. In that case, you can use the geometry with fillets and chamfers.
hi brother can we do post process in lsprepost or only lsdyna manager is required
Hi bro! Very good one! Could u do a drop test analysis ?
Thanks! I will work on a drop test analysis tutorial soon 👍🏻
If we see the graph for total energy it was slightly going up. But total energy is always constant. What could be the reason behind slight positive slope of that graph?
Superb Video, however when i tried, i got this following error:
Error 10125 (KEY+125)
Checking PART and SECTION definition input.
PART ID 1 with
SECTION ID 0 does not exist.
This is PART 1 in the order of input.
Any idea why?
Thanks for watching!
This error is related to the parts in the model. Please check whether every part has the correct card image, material and section assigned. This will resolve the issue.
@@Aeroswap Thanks bro. I did the silly mistake of solving the downloaded deck file instead of what I've worked on. Got solved. Is it possible to connect you on LinkedIn?
Hi is there anyway I can convert Ls dyna car models to obj using hyper mesh
Hi bro nice video
I have one error while run the simulation
In message it shows " Error part ID 2 with damage can be used with one point solid elements- type 1 only"
Please tell me how to clear it
That is weird. This error should not occur if you follow all the steps correctly. Please recheck your model to see if it is set up exactly as per the video.
After exporting to Lsdyna manager.. Error like input file does not exist after following every step correctly and it's showing please define input file names or change defaults. Please suggest useful
Hi sir, how can we obtain a graph of acceleration vs. Time from this simulation?
Hello Sir, I'm using HM 13 and cannot find MAT_ADD_EROSION material property. Pls guide me through. 😊
Try searching for it using the Find option.
Press CNTRL + F and type 'erosion'.
It might show up in the search results.
@@Aeroswap thanks for the quick reply. Sir, I beleive HM 13 does not have - find option with CNTRL +F. Can you please tell me the traditional way to find this material card?
That is unusual. I will check how to deal with this issue. If I find something useful, I will let you know!
Hi bro
Can you tell me where did you got the data for MAT 110
If you are asking about the glass properties, it is freely available on the internet.
As for the actual material card information, I referred LS Dyna user manual.
so we create the setup in hypermesh but we run the simulation in LS dyna?
Yes, Hypermesh is a preprocessor and postprocessor that works with multiple solvers. It is just to set up the analysis and postprocess the results. The solver is what actual computes the results.
Namaste anna
I am final year. currently searching for topics for the major project . We wanna do in CAE field only.
Can u suggest us something suitable, becz I am quite confused
Hello Giriraj, CAE is a very vast domain with many opportunities in specific fields. Your final year project must be built on your strengths and interests.
I suggest you to explore the various options available in CAE field and then decide a suitable project.
Good luck!
@@Aeroswap hi,
Like we just had bit of ansys basics in ciriculum.
Nothing like specifically intrested and yet to learn
May be topics on crash, durability, topological optimization friend was telling 🤨
As correctly mentioned by Aeroswap, the field of CAE is vast and the selection of your final year project will depend on your personal interests, or the future work path you would like to consider applying to. I'll try to help by proposing the following possible projects:
- Composite optimization of a given structure
- Non linear buckling of a composite panel
- Study of delamination or crack propagation in a aerospace structure (for example a stiffened panel)
Good luck with your choice.
@@emmanuelvassilakis5630 thank you sir
I couldn't get much details
Can u please send resources for buckling and delamination that would really help
Do you have any certification courses
No, currently I do not have any certification courses.
Hi bro. Does LS DYNA come within the hypermesh software itself? Hypermesh and LS Dyna are two different softwares right? Please clarify this doubt
Yes, LS Dyna needs to be installed separately. It is not included in the Hypermesh installation.
❤️❤️❤️🤟👍👍
Thanks!
can i give you some question?
Do hyper offer lsdyna option in the package?
I mean Altair hyper package, Lsdyna solver also
where can i download the ls dyna software , i tried it many times but my file is not running in program manager ?
pls help
I❤
Can you share the crack file link of LS Dyna Bro
Bro ur work is really amazing ... can u make a detailed course on Hypermesh on Udemy?... there's actually no such detailed course on Udemy
Thanks Mamlesh!
Yes, I am planning to create a complete Hypermesh course soon :)