Design and Analyzing Vibration with Acoustic …
261
Fig. 6 Frequency response—carbon fiber—modified model
Fig. 7 Frequency response—rockwool—modified model
5 Conclusion
The following conclusions can be made from the analyses results:
• The acoustic power level is decreasing for the modified model than original model.
So the sound level from the engine is less when modified model is used. When
the material Rockwool is used, the sound level is lesser.
• The frequencies are decreasing for modified model than original model. Due to
higher frequencies, vibrations will increase. Rockwool has lesser frequencies.
261
Fig. 6 Frequency response—carbon fiber—modified model
Fig. 7 Frequency response—rockwool—modified model
5 Conclusion
The following conclusions can be made from the analyses results:
• The acoustic power level is decreasing for the modified model than original model.
So the sound level from the engine is less when modified model is used. When
the material Rockwool is used, the sound level is lesser.
• The frequencies are decreasing for modified model than original model. Due to
higher frequencies, vibrations will increase. Rockwool has lesser frequencies.