Minimizing Abnormal Noise by Altering Modal Frequency using Numerical Method and Validating through Experimentally
2022-01-0366
03/29/2022
- Content
- The main Objective of this paper is to remove the abnormal noise by altering the modal frequency. From the numerical method, very high deflection is reported at HVAC assembly level, cause unwanted vibrations. Due to high deflection at low frequency (1st modal frequency), abnormal noise coming near blower assembly under experimentally dynamic conditions. Then, improved the design by adding the stiffeners on the flange to minimize unwanted vibrations and hence abnormal nose. Thereafter, modal frequency has been increased and reduced the high deflection. The same has been validated experimentally with proto sample and found no abnormal noise from the blower side. A good correlation between the numerical and experimental result is observed and matching numerical & experimental modal frequencies within the accuracy of ±10%.
- Citation
- Meena, A., "Minimizing Abnormal Noise by Altering Modal Frequency using Numerical Method and Validating through Experimentally," SAE Technical Paper 2022-01-0366, 2022, .