Help with modal analysis

[tobor74]

Hi!
I'm a teacher of computer music and sound design, and I have downloaded an student version of Fusion 360.
I'm investigating Fusion's modal analysis tool to see if I can get some data of simple objects to perform and illustrate modal sound synthesis to my students.
However I have one issue and one question:

Issue:
Not all materials seems available, like air and wood, which are especially crucial to create a test experiment and veryfy data with known equations.
Are some materials unavailable to me becouse of the student version? Would it be possible to have some help with this? 

Question:
is there a way to obtain dissipation factors for each mode? that would be fundamental to obtain the gain and bandwidth of each resonance mode, otherwise I must presume that in this sim Kn is 0 (feasable but not realistic).

Thank you very much

Giorgio

[tobor74]

Issue solved.

I realized that I must modify the material to isothropic behaviour to perform modal analysis...

[jan.vonasek]

Hi Giorgio,

Thanks for your interest.

Student version functionality is not limited.

You are right, modal analysis acccepts only isotrophic materials.

About disipation factor I need to ask our experts.

Regards,

Jan

[tobor74]

so if I modify the material to isothropic the analisys totally wrong I suppose.

Would the dev team consider to add modal analysis for orthotropic materials?
What about porcelain, air, water, paper too?

I will post here a sound clip soon of my experiments so far with modal synthesis created with the aid of Fusion360...
Working with glass, various metals and plastic so far made me very satisfied, the quality and realism of the sound is incredible.

[jan.vonasek]

Expert answer: Dissipation factor (damping) is not taken into account in current version.

Jan