Vibrations 2 - 230424

Question 1

What are the conditions to introduce stiffness normalization?

Answer 1

Fixed or unfixed?
Stiffness normalization: not possible if rigid body mode

Question 2

What is antiresonance?

Answer 2

positive residues produces antiresonance, due to the phase angles
Difference signs will never produce resonance. Different location for input and output.

Question 3

NVH

Answer 3

Noise Vibrations Harshness

Question 4

Psicoacoustic parameterrs

Answer 4

4 parameters:
* Loudness.
* Tonality: mostly one frequency
* roughness: frequency changing (like an ambulance’s siren)