Dynamic Impact Analysis using Hypermesh [Radioss Tutorial]
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- čas přidán 10. 09. 2024
- In this video, we will perform a dynamic impact analysis using Hypermesh and Radioss. We will be simulating ballistic impact of a bullet travelling at speed of 200kmph on an aluminum plate of thickness 3mm.
Material failure criteria will also be specified to observe the penetration of the bullet through the wall.
Radioss explicit dynamic solver will be used to run the simulation and post-processing will be done in Hyperview.
CAD Model : drive.google.c...
In order to clearly understand every step in this video, I recommend you to watch these videos as a prerequisite :
Dynamic Crash Analysis using Hypermesh : • Dynamic Crash Analysis...
2D Mesh Creation and Optimization using Hypermesh : • 2D Mesh in Hypermesh :... #aeroswap #fea #hypermesh #cae
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Impactful explanation!! Thankyou for posting such an informative tutorial!
Glad it was helpful ! Subscribe for more content.
As usual, up to the point explaination. Loved the video.
Thanks! Glad you liked it.
@@Aeroswap continue the good work
Bhava, bhariy videos aahet 🔥
You are videos are excellent sir, plz up load more such videos on hyperworks
Thank you!
Thankyou soo much bro
thanks for your video, but i have a problem: after run there is announce :License check failed !
"Radioss" feature not found on license server!
Check your License server settings
can u help me fix it
it is showing end of solver output but again it is starting from NC time …how to solve this error ?
very informative radio
Hi CZAD!!! I have questions.
Why in matrials is 710000?
Why not 71000
Please replay
from how much distance the bullet is impacting on the bullet
Why did you mesh the bullet if you made it rigid?
Sir I have hm 14 and m not getting SIGY in that material collector and also not getting failure criteria so plz tell me where I get this
Also how to find the material properties of paper honeycomb panel using FEA instead of testing
I can't find tool --> Bcs manager hyperworks 2022 (radioss 2022 format), could you give me some advice. Thank you
Hi Angelo, if you are using the Solver browser, just right click and in the 'Create' option, you will find 'Boundary Conditions'. I hope this helps :)
@@Aeroswap Thanks for the answer, but in browser -> create I don't find boundary condiction. If I look in the menu bar at the top -> tools -> create cards-> boundary conditiond -> inivel I can create the load collectors "invel" and also "bcs" but I can't set the parameters Vx, Vy, Vz ...Ty ...
That's weird. I am using HyperWorks 2022 as well. I am able to use the Solver browser to do all these operations related to boundary conditions!
I cannot provide much advice here in the comments. If the issue persists, we can talk in more detail via email communication. My email address is provided in the 'About' section of this channel :)
I managed to solve thanks to view -> browser -> hypermesh -> solver (thank you mister Valenti). @Aeroswap thanks for the help and congratulations on the videos, they are very useful
Gud work... Keep it going...
Thanks!
. 🎩👍 Great!
Explanation
Please do one tutorial on contact analysis using Abaqus
Thank you! Will work on it.
How to get nodal stresse in radioss
Can you say How the Quasi-static crash analysis of cylinder with 3mm thick can be done in radioss??
Yes this can be done. The procedure to set up such an analysis is similar to what I showed in this video.
Feel free to experiment and see how it goes!
At 8:37 in tools menu of hyperworks 2020 student edition there is no boundary conditions manager, so I'm stuck over there can you please help
Press CONTROL+F and search for 'BC Manager'. It will show up in the search results. It seems the location of this manager has been shifted in the newer versions of Hypermesh.
@@Aeroswap I did that multiple times but also not able find because that option is completely removed in hyperworks 2020 itseems 😔😑
Is there any other way to proceed
I suggest you to ask this question on the Altair forum. I dont know about these changes in the newer version of Hypermesh!
How do you incorporate different energy levels into the impact? Thanks
But why the hole created by bullet on the wall is in square shape but not circular
Good observation! To reduce the solving time, we have used a coarse mesh for the wall in this particular case.
If you want to observe the penetration results with more detail, make sure to refine the mesh near the impact region.
@@Aeroswap Got your point. Thanks 😁
Can we quasistatic analysis with Johnson material model?
How to model paper honeycomb?
hello. I have student version oh hypermesh. I followed up your steps but unable to load results. please help me out.
Can you elaborate more on what you mean by 'unable to load results' ? Is there an error with the analysis or you are just unable to view the results after successful run?
I’m unable to read results after successful run. I have performed the same steps as per your video. Hyper view is not showing in my radiosis analysis tab. Which version is yours hypermesh?
Please help me out with this.
Open Hyperview separately and load the animation files as I showed in the video.
If the analysis run was successful, there will not be any issues in viewing the results!
Hello, thanks for the video. I was wondering if u have defined the bullet as a solid??
Hey Alberto,
In this particular case, the bullet is a non-deformable rigid. However, it is possible to make the bullet deformable if you want to do that.
@@Aeroswap in fact, I have also a non-deformable rigid in my simulation so it´s really useful for me thank you so much!! Additionally, I would like to ask you about the definition of the material failure. Why do you do that in this video?? I mean is it necessary when you define a non-deformable rigid?? I watched your other video about the dynamic crash analysis and you didn´t define the material failure. I was wondering what is the difference between defining or not defining the material failure? Thank u in advance! Your videos are really helpful for beginners like me!!
Maybe my previous answer was not clear, apologies for that. Please let me clarify. The bullet is a rigid but the plate is still deformable. The material failure is defined for the plate, not the bullet. I hope that makes sense.
Radioss is not install currently show in my system. What I DO SIR
This happens when the installed version of Hypermesh and Radioss is not the same.
Just export the solver deck (engine file + run file). Then launch Radioss separately and run the analysis.
@@Aeroswap thank you sir
Can you show how to do ply composite and bullet impact? Thank you
Hi!bro!This is Hari from Chennai!I am getting some error while simulation of drop weight.Can you help me to solve the error?
Hello Hari, what is the error ?
@@Aeroswap Error in geometry plot file and No restart file
This means you have not defined the output block correctly. Make sure that the setting of output block is on 'DEF' (ie. Default).
I think this will solve the problem.
@@Aeroswap let me check and I'll comeback
How can I plot the MAXIMUM Value of Tresca Stress vs Time in Hypermesh (using RADIOSS)?
If you know the node ID where maximum stress is observed, you can plot the graph by quering that node against time in Hypergraph.
@@Aeroswap Thank you for the answer. However, I want to do the maximum value of tresca stress vs. time as I did in LS-Dyna, using History, I chose element, and chose maximum value. Can Hypergraph do that too?
Yes, that is possible in Hyperview.
@@Aeroswap How to do that? Can you please explain the steps?
I won't be able to explain it in a text message. I recommend you to check the Hyperview documentation for step by step procedure to do this.
In case you still face issues, please write an email for better communication. My email address is provided in the 'About' section of this channel.
This is a good one, thank you. Do you happen to have the same for a plate made of a composite laminate?
I’ve analyzed a similar model as yours when I worked on a cockpit door materials evaluation. Such a great example of tasting dynamic analysis. Quick question, how did you determine your D1-D5 values? You mentioned you have tested and determined subjectively, could you show us how you got those values?
To start with, I referred the Radioss user manual. In the 'Failure' section, detailed information is provided about every paramater from D1 upto D5. Along with this, default values to be used are also provided.
I simulated my first run with these default values. After observing the results, I started tweaking individual paramaters as per my material definition and ran an iteration for every change.
I continued this till I could see a proper element deletion without extra material removal or excessive stiffness in the results.
But this is not an industry standard! Usually, the values of D1-D5 are predetermined and must not be changed. The only changes acceptable are in the property and contact formulation.
As this was just a tutorial with no practical significance, I decided it was okay to go with the trial-and-error iterative process!
Aeroswap thank you for the details, unless provided by the supplier or lab it make sense to iterate the values to determine appropriate element deletion for the failure criteria.
Aeroswap also I really like your dynamic analysis tutorials. I hope to see more examples!! Thank you for your good work always 🙏🏼
Sir please make video on preparing report.
That is a very good suggestion, thanks! I will work on this topic soon :)