COBEM99

S21 Vibrações e Análise Modal

Title:

ANALYSIS OF VIBRATION ISOLATION SYSTEMS USING THE SENSITIVITY METHOD

Summary :

EVALUATION OF THE SENSITIVITY TO PARAMETER VARIATIONS SHOULD BE A BASIC ASPECT IN THE STUDY OF MECHANICAL SYSTEMS. IN A COMPLEX SYSTEM WHOSE DYNAMICAL BEHAVIOR IS GOVERNED BY SEVERAL PARAMETERS IT IS IMPORTANT TO KNOW WHICH ONES ARE THE MOST IMPORTANTS IF WE CAN CHANGE ONLY A FEW PARAMETERS. IN THIS WORK WE STUDY A PASSIVE VIBRATION ISOLATION SYSTEM WHOSE EFFICACY IS MEASURED BY THE TRANSMITTED POWER TO THE BASE OF THE SYSTEM. THE PASSIVE SYSTEM IS COMPOSED OF TWO ISOLATORS AND A RIGID OR FLEXIBLE BASE, THE EXCITATION CAN HAVE ANY DIRECTION. WE USE A SUBSTRUCTURING TECHNIQUE TO ANALYZE THE SYSTEM. WE HAVE SHOWN THAT THE CONFIGURATION (PLACE OF ISOLATORS, FOR EXAMPLE) AND THE TYPE OF EXCITATION ARE VERY IMPORTANT IN THE DESIGN, AND WITHOUT THE TOOL OF SENSITIVITY ANALYSIS WOULD BE VERY DIFFICULT TO DETERMINE WHICH PARAMETERS TO MODIFY. WE HAVE ALSO STUDIED THE INFLUENCE OF SOME PARAMETERS, LIKE MASS, STIFFNESS, ISOLATORS SLOPE, ETC.

Author :

Coronado, A. M.
Rochinha, F. A.
Sampaio, R. 0

Paper View :