General Mechanical

General Mechanical

Looking for Acoustic Extension for ANSYS Version 2020 R2

    • sadrip
      Subscriber

      Hello,


      I need to model the interaction of an acoustic pressure wave with a polymer membrane to find out the displacement the acoustic wave it causes in it. So far, I have figured out that I should use Harmonic Response module to do such modeling. However, I noticed that the Acoustics extension is missing from the workbench, meaning, it's missing from the "Manage Extensions" window. And that happens to cause an issue that items such as "acoustic body" and "acoustic wave sources" are missing and I won't be able to add them to my model.

      I have the ANSYS license through our school, and apparently, the acoustic extension does not come with the installation package provided by the school. Trying to find it online, I found the following link, which provides it for free:

    • Aniket
      Ansys Employee
      Hi Parinaz,nYou are right, the Extensions are designed for specific versions and should only be used in the version it is specified on the app store. nIn 2020R2, this extension is available as standard system:nandn-AniketnHow to access Ansys help linksnGuidelines for Posting on Ansys Learning Forumn
    • nisimshushan
      Subscriber
      The Acoustic Extension 19.2 works in ANSYS 2020 R2nCan download herenhttps://catalog.ansys.com/n
    • Aniket
      Ansys Employee
      nisimshushan, thanks for your feedback! I was just telling that it may not work, and if they face any issues, it is not supported in other versions! But still thanks for confirming!n-AniketnHow to access Ansys help linksnGuidelines for Posting on Ansys Learning Forumn
    • sadrip
      Subscriber
      Hi Aniket,nnThank you sop much for your response.nI'm actually not able to open the ANSYS help links you provided in your comment, since I cannot login into the ANSYS Help website as a student user. I tried to follow the steps mentined in the How to access Ansys help links, but when I open Ansys Workbench help, it does not open in a browser, and it opens in a window titled as Ansys help viewer, and there is no address bar in it where I can paste the address to the Ansys help link you provided. I tried Tools->Go To Page, and pasted the link address in the Enter Page Location field, but when I pressed OK, I get an error Cannot find this page location in the documentatio.nPlease advise me on how to access the help links you shared, or please explain how I should get the acoustic module working for version 2020 R2.nnThanks,nParinaz
    • sadrip
      Subscriber
      Also, I'm not quite sure what you meant by acoustic extension being available as a standard system in Ansys 2020 R2. Does that mean that it should already be available with the standard installation of Ansys mechanical? In that case, I should clarify that after I installed Ansys, specific acoustic functionalities such as acoustic body or acoustic sources were not available in Harmonic Response module. Could you please explain how to access those functionalities to Ansys 2020 R2?.Thank you,nParinazn
    • Aniket
      Ansys Employee
      assuming you are using 2020R2, if you are using local help, the links that I mentioned above have local path as:nhelp/wb2_help/wb2h_modal_acousAN.htmlnandnhelp/wb2_help/wb2h_hamonic_acousticAN.htmlnwhich you should be able to navigate to go to page function.nBtw which license are you using?nIdeally with student license one should see these two systems, if I am not mistaken.n-AniketnHow to access Ansys help linksnGuidelines for Posting on Ansys Learning Forumnn
    • sadrip
      Subscriber
      Hi Aniket,nnI was able to open the help links. However, they are no so helpful to what I'm trying to resolve. I wonder how I can define the fluid medium surrounding the polymer membrane in my simulation as acoustic body, in a Harmonic Response module, while it is missing from the menu when I right click on Harmonic Response in Model window and click on insert. I assume I should see the acoustic body in there, but it is missing. Also, acoustic wave source options are missing as well, and most importantly, FSI is missing, so I can't set up any fluid-structure interaction in my model.nnI did try and install the version 2019 extension, and those options showed up in the Model window for Harmonic Response after installing it. However, I faced errors after running the simulation for a tutorial example for a speaker, for the acoustic mass source and the acoustic pressure boundary condition that I have used in the model. Here is the error message I get: You have applied an invalid load for the current analysis.nAgain, I need to use Harmonic Response module, as I want to see frequency behavior of the structure, so Modal Acoustics and Harmonic Acoustics are not what I'm looking for, to simulate my model. nAbout the license I'm using, I've got the license through school: http:/laptops.eng.uci.edu/software-installation/ansys-campus-software-for-uci-engineeringnAs it is mentioned in the link, different types of licenses are included under it:nSolvers are all included. The license set includes 50 Research (Mech/CFD), 25 Research (Electromagnetics) and 250 Teaching of each, 75 Composites, and 128 HPC's: nNOTE: By default, research licenses are issued. After research licenses are used up, licenses are issued at the Teaching level with node restrictions.nNot really sure how I should be able to check what kind of license is applied to my end, but I think I should have all modules available under such license:n
    • sadrip
      Subscriber
      Hello,nCan someone from ANSYS please clarify the answer to my question? I was told that our ANSYS license guarantees our questions on the forum to be answered, which would take 2 days typically, but it's been 5 days now.nThank you,nParinazn
    • Aniket
      Ansys Employee
      Array , I thought Array already answered your question above, is it not?nPlease post an inline image of what you see in Harmonic Acoustics system (NOTE: It is not Harmonic Response)n-AniketnHow to access Ansys help linksnGuidelines for Posting on Ansys Learning Forumn
    • sadrip
      Subscriber
      Array , Thanks for your comment. Actually after your comments and the other comments on my question, I got more confused (I should add that I'm a beginner with ANSYS). I'm going to try and one more time explain what my question was and how it got more confusing the way you and others commented this:nI had made it specific in my question, that I need to use Harmonic Response module in ANSYS version 2020 R2, and features such as acoustic body or acoustic source, or FSI are missing from that module, from what I see. However, both you and Array mentioned Harmonic Acoustics instead. I don't understand why. Is it because you think for simulation of a polymer membrane exposed to an acoustic wave I should use Harmonic Acoustics instead? If yes, please explain why. It would be helpful if you briefly explain the difference in the functionality of these two modules.nAgain, from what I see, features such as acoustic body (Or Acoustic Region as Array mentioned earlier) or acoustic source, or FSI are missing from Harmonic Response module. The figure below is a screenshot of what I see in Harmonic Response.nI should add that for Harmonic Acoustics module, I can see the features I mentioned above, without any problem, and it's only for Harmonic Response module without any issues.n nThank you so much.nn
    • Aniket
      Ansys Employee
      Harmonic Acoustics The Harmonic Acoustics system determines the steady-state response of a structure and the surrounding fluid medium to loads and excitations that vary sinusoidally (harmonically) with time.nhelp/wb2_help/wb2h_hamonic_acousticAN.htmlnhelp/wb_sim/ds_harmonic_acoustics.htmlnHarmonic Response The Harmonic Response system determines the steady-state response of a linear structure to loads and excitations that vary sinusoidally (harmonically) with time.nhelp/wb2_help/wb2h_harmrespAN.htmlnhelp/wb_sim/ds_harmonic_analysis_type.htmln
    • sadrip
      Subscriber
      Thank you so much for explaining and providing the links @Aniket. Can you please also guide me how to resolve the issue I have with Harmonic Response, which I repeated a in my comments before? I'm copying it in the following:n2. Again, from what I see, features such as acoustic body (Or Acoustic Region as Array mentioned earlier) or acoustic source, or FSI are missing from Harmonic Response module. The figure below is a screenshot of what I see in Harmonic Response.n3. I should add that for Harmonic Acoustics module, I can see the features I mentioned above, without any problem, and it's only for Harmonic Response module without any issues.nI had uploaded a screenshot for this issue, in my comment on Nov 2nd, as you asked previously.nI'd really appreciate it if you could share your opinion on this.nThank you so much.n
    • Aniket
      Ansys Employee
      Kindly answer the following:nwhy do you need harmonic response system for an acoustics problem? nCan you please elaborate why can't you use harmonic acoustics system? nDid you read through the theory manual I gave? it explains the basics for both the systems, and for your application harmonic acoustic system is which you should use. Also did you go through the response on your previous question? https://forum.ansys.com/discussion/20518/how-to-simulate-the-vibration-of-a-suspended-diaphragm-cause-by-and-acoustic-wave#latestnThere is no other straight forward way to get acoustic features in 2020R2 Harmonic response system. That is why we have the specialized system, for the specific purpose. I was not ignoring your second and third part of the question, I was simply hoping by answering first one you will not need the answers to second and third one.nn-AniketnHow to access Ansys help linksnGuidelines for Posting on Ansys Learning Forumn
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