Passive Control and Local Structural Modification of a Mechanical System Through the Application of High Stiffness Double Layer Dampers Becchis-Osiride s.r.l

Format:

Conference/Event

Author/Creator:

Giovanni, Visconte, author.

Conference Name:

SAE 2007 Noise and Vibration Conference and Exhibition (2007-05-15 : St. Charles, Illinois, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2007

Summary:

A study on a passive modal control to be applied to a generally constrained mechanical system is presented, able to cut down frequency peaks in a selective way. A preliminary modal analysis is needed in order to define the system eigenvalues and eigenvectors; then, Damping, Stiffness and Mass experimental matrices can be obtained. Starting from these data, the developed methodology allows to define a damping matrix able to modify the local and global structural modes. In order to validate the reliability of the theoretical model, a simple five degrees of freedom model was first examined, with known stiffness and mass matrices, and a solution for a chosen damping matrix was checked. Successively the same solution was verified giving the theoretical model incomplete information regarding the eigenvalues and eigenvectors matrices. Having validated the theoretical model on a simple system, the methodology was applied to a car roof, realizing a modal modification starting from partial information on the eigenvalues and eigenvectors matrices

Notes:

Vendor supplied data

Publisher Number:

2007-01-2351

Access Restriction:

Restricted for use by site license