Proceedings of the Korean Society for Noise and Vibration Engineering Conference (한국소음진동공학회:학술대회논문집)
- 1996.10a
- /
- Pages.224-230
- /
- 1996
- /
- 1598-2548(pISSN)
Structural Dynamics Modification of Damped Systems via Sensitivity Analysis
민감도 해석에 의한 감쇠계의 구조변경
Abstract
In the mechanical systems with large damping, the conventional SDM method developed for no damping systems will lead to an error solution. Here, we introduce a SDM method based on the experimental modal model for large damping systems. The sensitivities of natural frequencies and mode shapes with respect to mass, damping, and stiffness coefficients of structures are used to calculate the position and quantity of modification, and predict the new dynamic characteristics. Through numerical simulation and experiment, the effectiveness of the proposed method is tested.
Keywords