Nonlinear Contact Analysis using Hypermesh [Optistruct Tutorial]

In this Optistruct tutorial, we will perform a nonlinear contact analysis using Hypermesh. We will perform finite element analysis (FEA) on a rack and pinion assembly to evaluate the deformation and stress produced in the parts.
Preprocessing - Hypermesh
Solver - Optistruct
Postprocessing - Hyperview
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#aeroswap #hypermesh #optistruct #fea #cae

[@jmgrabelo]

You helped me a lot with your content. Thank you.

[@dipanshupanda5713]

Very nice explanation, you are the best, Thanks a lot

[@marciodinizdasilva]

Very good video, thank you.

[@muhammadaliabid5793]

Excellent explanation. Highly appreciated 😃

[@Aeroswap]

Thank you :)

[@ajinkyamane9091]

Welcome again brother 😁✌🏼

[@emmanuelvassilakis5630]

Nicely explained Swapnil. Contact analysis can be tricky sometimes, however the new algorithms allow FEA users to experiment using contact with ease. I was expecting to see a rotating pinion :) As a suggestion for examining some additional results in Hyperview: add the "CONTF" in the global output options during preprocessing.

[@Aeroswap]

Right! This is just a very simple example to introduce beginners to contact nonlinearity. I am already working on a model with rotating gears. It will be a continuous sliding (CONSLI) type of contact with friction. The CONTF card will be used to extract key outputs like contact pressure, status and forces. Working on this at the moment. I will surely let you know once it is ready :)

[@alexkou95]

Please make a tutorial on Multi-Body Dynamics especially using the flex prep tool! Great work as always!

[@Aeroswap]

Thanks for the suggestion! I will work on this topic soon :)

[@roshanmarode4679]

Thank you for the in-depth details..you made us easy to learn difficult things..Will you please advise the significance of Altair over the Abaqus? Thank you

[@Aeroswap]

Hi Roshan,
Altair Hyperworks and Abaqus are both top notch industry leading software for FEA. Both have certain pros and cons but there is no clear winner if you want to compare. If you ask me, I personally prefer Altair due to the high level of flexibility it provides in model setup! On the other hand, Abaqus might be simpler to use than Altair products.
In the end, it depends on what you like better. You can't be wrong with either of these choices. Both are very good :)

[@roshanmarode4679]

@@Aeroswap Thanks a lot for your valuable inputs.

[@adelinewar3222]

Could you tell me how do we get interface stresses at contact region in hypermesh. What is the component or option to see the contour pr result for interface stresses ?

[@shoebqureshi7359]

plz make a video for helical rack and pinion gears

[@keshavshukla9558]

Could you please suggest us a video, where you explained the process carried out prior to this set up

[@Aeroswap]

Hi Keshav, please check the 'Meshing Tutorials' playlist.

[@vyankateshkekale8764]

Please upload vedio fatigue analysis of crank using S N method

[@bhupeshparate999]

Hello sir !!!
Help me out sir...
In my analysis while meshing the error occur. (Problem with the Surface normal orientation please check) how to fix it.??

[@allonmessenberg3129]

Why did you create 2 separate but identical (except for the name) property card?

[@Aeroswap]

Hi Allon, it is a standard guideline in industry that every component must have a separate property. This is just to keep the model organized. If one property is modified at a later stage during the analysis setup, it should not affect other components.
However, you can use the same property for both components and get the exact same results. Notice that in this case, the solver will output a warning message saying that same property is used for two or more components!
Good observation by the way :)

[@amitdeshmukh9660]

👍

[@shashwatnaik9523]

Do we need non linear material properties for solving non linear problems?

[@Aeroswap]

Hi Shashwat, it depends on what kind of nonlinearity you want to have in the analysis. In this particular case, we are only interested in boundary (contact) nonlinearity. Hence, a linear material was used and nonlinear contact is defined. I hope this information helps!

[@shashwatnaik9523]

@@AeroswapYes got it
Much needed information shared, Thank you🙏

[@__--JY-Moe--__]

👉👆👉👉👍👈💪