영상보고 잘 배우고 있습니다. 따라하면서 잘 안되는 부분에서 질문 드려요. Acoustic FSI interface부분부터 acoustic wave sources까지 똑같이 따라 했는데 작업 cell 상태가 모두 파란색 물음표로 안되네요. 버전은 acoustics extension 192.1 ver 입니다.
You can use the Artificially Matched Layers(PML) in the Acoustic Body contents 5:46. However, you'll need to modify and separate the geometry to set this up. th-cam.com/video/VQ0I_qBOtL4/w-d-xo.htmlsi=5vN3y4_jqHda7Lqm&t=6232
@@muhammadfadil761 Is aluminum foam acoustic region? so you can use the perforated material model. Refer the tutorial video th-cam.com/video/G4jdy0H0otw/w-d-xo.htmlsi=2eDl9gVEXGYBagLw&t=19 Refer the JCA model apmr.matelys.com/
I am trying to do your analysis. Additionally, I tried to obtain STL and absorbtion coefficient. All conditions are the same with me except wave sources. I used surface velocity. But my absorbtion coefficient comes zero except resonance frequencies. Even on that frequencies, absorbtion coefficient is 0.2. Do you have any idea? Maybe I need some additional boundary condition ? Thanks
Also my model in this video has zero absorbtion coefficient result with error. I do not know about the Acoustics ACT internal error. Noticed in this video I recommend you use native analysis system in Workbench.
Thank you so much. It's hard to find a good human like you in this world.
what is the difference with harmonic acoustic? And if I want to analyze noise barrier, which one should I use?
This is an older method that predates the development of the Harmonic Acoustics system. You must use the Harmonic Acoustics system.
@jonghak.lee_simulation Okeyy. But, what about Ls-Dyna acoustic ? Its same harmonic acoustic?
@@indra0912 LS-DYNA Acoustic system is based on BEM method. Harmonic Acoustic system is FEM.
영상보고 잘 배우고 있습니다. 따라하면서 잘 안되는 부분에서 질문 드려요.
Acoustic FSI interface부분부터 acoustic wave sources까지 똑같이 따라 했는데 작업 cell 상태가 모두 파란색 물음표로 안되네요.
버전은 acoustics extension 192.1 ver 입니다.
절점공유 모델을 권장합니다. ACT 사용 시 Beta option 활성화가 필요합니다. 다른 원인은 없을 것 같습니다.
I have the same issue in Ansys 2023
Sir, i have been use comsol and watch tutorial video. In comsol, use perfectly match layer. What about ansys ? is not use ?
You can use the Artificially Matched Layers(PML) in the Acoustic Body contents 5:46. However, you'll need to modify and separate the geometry to set this up.
th-cam.com/video/VQ0I_qBOtL4/w-d-xo.htmlsi=5vN3y4_jqHda7Lqm&t=6232
@jonghak.lee_simulation Can i edit the material. for example I use aluminum foam, can I add a porosity variable (value) in ansys ?
@@muhammadfadil761 Is aluminum foam acoustic region? so you can use the perforated material model.
Refer the tutorial video th-cam.com/video/G4jdy0H0otw/w-d-xo.htmlsi=2eDl9gVEXGYBagLw&t=19
Refer the JCA model apmr.matelys.com/
@@jonghak.lee_simulation Thank u so much and may God always give you health sir.
I am trying to do your analysis. Additionally, I tried to obtain STL and absorbtion coefficient. All conditions are the same with me except wave sources. I used surface velocity. But my absorbtion coefficient comes zero except resonance frequencies. Even on that frequencies, absorbtion coefficient is 0.2. Do you have any idea? Maybe I need some additional boundary condition ? Thanks
Also my model in this video has zero absorbtion coefficient result with error. I do not know about the Acoustics ACT internal error. Noticed in this video I recommend you use native analysis system in Workbench.
Can you make one one vedio on vibro acoustics of vibrating plate
It is easy. Just try to define any excitation loads of structure(Displacement or Force) in this video model without acoustics load.
@@jonghak.lee_simulation I have applied nodal force. I m getting structural deformation. But im not getting acoustic pressure
@@kirankumarreddyroddda8046 Please see the cross section result.
Dear sir, can we use "mass source" and "incident wave source" together in acoustic excitation?
Yes, you can define multi-sound sources.