| 摘要 |
<p>The present invention is a floor panel structure of a car body where an automobile floor comprises a floor panel (2,4,6) that is connected to the frame members of the car body and also has a vibration mode adjusting structure that suppresses the generation of acoustic emission by generating 2x1 mode vibration in a predetermined frequency band. The floor panel has a non-rectangular vibration region (S5-S8) and the vibration mode adjusting structure of the floor panels (2,4,6) the vibration mode adjusting structure of the floor panel comprises a vibration adjusting part (50,56) that defines the vibration distribution and vibration amplitude of the antinodes of 2x 1 mode vibration, and the vibration adjusting part (50,56) is disposed within the a non-rectangular (S5-S8) vibration region so as to make the vibration volumes of two antinodes of vibration in 2x1 mode nearly the same. <IMAGE></p> |
