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Submodeling in Hypermesh [Optistruct Tutorial]
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- čas přidán 20. 06. 2022
- In this Optistruct tutorial, we will perform submodeling in Hypermesh. This is also known as global-local analysis.
Model setup is performed in Hypermesh and the Optistruct solver is used to extract the results. The post-processing of FEA results is done using Hyperview.
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#aeroswap #hypermesh #optistruct #fea #cae
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Hi Swap thanks for sharing this, it is a good modeling technique to show a comparison between global vs local stress analysis. In lot of cases local models are preferred to perform structural assessment on specific parts of interest. Global models also come in handy showing further load distribution to interfacing components, which is a reason why stress reduction is shown as covered in your presentation. So it is up to analysts decision how to idealize the environment based on assessment objectives.
Hey Ken, how are you? Long time no see!
Thanks a lot for the additional information on this topic. I am sure it will be useful to the viewers :)
@@Aeroswap long time no see Swap, as always I’m swamped by work. You’re doing a wonderful work here my friend, one and only hypermesh master!!
Please Come back brother. Everyone waiting you. You and your videos most beatiful serious on the internet.
Well done Swapnil! An excellent presentation of a long anticipated procedure. As in every "global to local" (or submodeling, or "zoom analysis"), it is a good practice to plot the reaction forces both on the global model and the local one in order to confirm that the values match each other. Thank you!
Thanks for sharing the initial information regarding this method with me Emmanuel! Good point about reaction forces. I will make sure to include that in the next submodeling video.
Please keep doing those tutorials!
Come back. We (I) need you.
Hey there!
If things work out as planned, I will be back with new content in the later half of this year :)
Bro please do 1000 - 10000 videos on Hypermesh/HyperWorks tutorials. Your videos are wonderful and Invaluable. Its my humble request Please and don't forget to upload the modep files in description which you used in the CZcams videos
Please do bro I support your contents and don't forget to upload the model files in description during each and every tutorial in youtube
I am looking forward to your content in Hypermesh
Do all workbenches, Radios , Optistruct , CFD , FEA , car 🚗 crash test, etc .
Don't stop till 10000 - go till million videos in Hypermesh/ Hyperworks cover all the workbenches in it
You make my day
Daily Videos are needed. 😅😅😅
Excellent video sir
Thank you :)
Waiting for this video sir..thank you..can you please explain in submodelling abaqus
Hi Ravinder, I am not familiar with Abaqus as most of my work only involves HyperWorks and Optistruct. Please refer the Abaqus help documentation to learn more about performing submodeling using that solver!
Hello, I would like to know if you don't have a video teaching explicit dynamic analysis, with the expdyn optistruct subcase, for materials mat1 / matx, matx27, matx33, matx36, thank you.
I like your videos! Very useful!
Courd U please make one about geometry processing for complicated structure with T-joints and various thicknesses. Where it's gonna require some midsurface creation for thin parts and appropriate 2D mesh and some 3D mesh at latch locations (where thickness is too big and it should be considered as solid). That would be some doors or lids with complex machined edges.
Can u pls explain adhesive integrity analysis
Fantastic video. A few questions:
1. If we want to further refine the mesh, can we add another submodel and only run it or do we have to run all subcases (including the large global model) again?
2. How is this method different from including Grid Point Forces in the output of the global model, and then importing those results to a FBD in the submodel?
3. If we refine the submodel mesh a lot, how do we avoid the stress concentrations at the nodes of the local mesh that are equivalenced with the global mesh?
Thanks.
Thanks Vim. Good questions! Here are my inputs-
1. Yes, you can create multiple submodels in the same run (using the same global model). In fact, you can also use one of the submodels as a global model and break it down further into sub-sub models! Just make sure that you define the loadsteps in correct order (loadcase ID). Global runs should always be first, followed by local runs or the solver will throw an error. I hope this is clear!
2. Major difference is that in this method, you can run the global and local models in one go! No need to perform separate runs for global and local models. Another major advantage is that the number of steps involved in setting up the analysis is much lesser as compared to using thr FBD tool. So preprocessing will be faster!
3. You can create derived results in Hyperview where the stress result is averaged over certain number of adjacent elements (or layers of elements). This will mitigate the localized stress concentration, at least to some extent!
I hope the above points answer your questions! For further discussion, feel free to reach out via email :)
@@Aeroswap Thank you for the detailed answer.
Hello, aeroswap. Suppose we have different young’s modulus for every element in the model. How will you represent that in Hypermesh and do the analysis? Can you make a video on it with results such as Von Mises stress shown? I would be so glad if you could help me with this. Thank you
can you make a video on model reduction by using CBN(ie Craig Bampton method) with solver Optistruct ?
i request you plz post videos about Aeronautical engg related Hypermesh videos
can you share an example with complex hexa mesh Thank you
Hi, very good video!
But I have one question. Is that any option to run local submodel analysis only? Sometimes bigger model analysis takes too long and will be perfect to run it as a submodel only. Did you hear about it?
Thanks!
Hi Artur, the concept of submodeling is based on the principle of mapping the results obtained from global model onto the local submodel. Submodeling is not an alternative to solving the global model. Hence, it is not possible to run only the submodel. You need to run the bigger analysis first for this method to work!
I hope this information helps!
I have a trouble when i run the problem. *** ERROR # 216 ***
Rigid element 2206 is entirely outside
the domain of submodel for subcase 2.
Can you help me to fix this error?
This error will occur if there are rigid elements in the model that are not directly connected to the submodel. The solution is simple. Deselect the 'Include rigid elements' (SID_R) option while defining the loadsteps. This will resolve the error!
A great answer. Thank for your help. I hope that you will have more great videos relate HyperMesh.
I am using altair student 2022 version but ı dont have altair compute control tool. Have can ı solve my setup?
hi can you tell me how to give coordinates for cylindrical anisotropic thermal conductivity for a battery cell in hyperworks?
Hi I am sorry for out of topic
Did you know why the Hypermesh is so heavy application
I have Hypermesh 2023 suite in my PC (Ryzen 5600X, 16Gb RAM, RTX 3060 12Gb). My computer lagging so much even if only I import geometry
The geometry is a simple small 1Part (motorcycle shock absorber head)
Actually there is nothing suspicious in the Windows Task manager (CPU 10~20%, RAM 50%)
I don't know why this can possibly happen
Is there anything that I can do to make the application lighter?
Hi there,
My PC is 16GB RAM as well, and it's almost 5 years old now. I have absolutely no problem using HyperWorks on my PC. The application is smooth, I think something is wrong with the settings used to run the application on your machine.
I'm not an expert in hardware things so I don't think I can help much in this regard. Maybe someone else can pitch in!
@@Aeroswap hi
I made a video about it czcams.com/video/m7xSzEJfhRA/video.htmlsi=sdqG4riFy4-m12Oe
I don't really know exactly what happen. I already uninstall then install it again but the problem still occur
Interestingly I installed in my laptop i5 gen 9, RAM 16Gb, RTX1650 (all spec is lower than my PC)
The software run smoothly
Great video, high quality content as always! I have learned a lot from your channel and would like to support you by buying a t-shirt, is this possible?
Thanks David! Sure, lets talk about this via email :)
Could you pls do a tutorial to Equal static load method (ESLM) with optistruct and hyperstudy for lets say ductility optimization (for static load leading to plasticity) 🤙🤙
I could really need it for my master thesis,
couldnt find any tutorial or lecture with detailed examples ☹
Maybe somebody could link me sth helpful. Thanks community
Hi bro, I am new to your channel, really liked your content. Just started with Hypermesh, an issue came up write away, I was importing one of your tutorial IGES file for my practice but for some reason it shows nothing on the screen, I tried different different IGES files but after clicking Import it shows nothing on the screen just the background color. Can you please help me figure this out?
Hi Prakhar, this is surely an issue with the graphics card/drivers installed on your machine. Please make sure that the graphics drivers are up to date. You can check the minimum hardware requirements from the Altair website.
@@Aeroswap Thanks for replying, I do use ANSYS Fluent, CFX etc. for my work but they work fine no issues there, its just Hypermesh, also graphics card is up to date. What else can I do?
Can please make on how download the software or drop link to download
HI BRO IW THERE ANY CHANCE U CAN HELP ME WITH A PROJECT ON HYPERMESH?
Why you have used RBE3 here instead of RBE2?
Hii sir
Not able to find your e-mail address in about section of channel
sir plz see my mail regarding optimization
Hello sir , thank you so much for your effort . I am writing to humbly request your assistance, as I find myself in a situation where I truly need your guidance. If it is possible, I kindly ask you to respond on instagram at your earliest convenience. Your prompt response would be immensely appreciated. or please can you give me your linked in