Accession Number:

AD0692279

Title:

ON THE INSTABILITY OF PARAMETRICALLY EXCITED TWO DEGREES OF FREEDOM VIBRATING SYSTEMS WITH VISCOUS DAMPING,

Descriptive Note:

Corporate Author:

POLITECNICO DI MILANO (ITALY) ISTITUTO DI MECCANICA E COSTRUZIONE DELLE MACCHINE

Personal Author(s):

Report Date:

1967-09-21

Pagination or Media Count:

17.0

Abstract:

The stability of vibrating systems having two degrees of freedom subjected to parametric excitation and with viscous damping are studied with a special perturbation method. Analytical expressions in explicit form in second approximation are obtained for the transition from stability to instability. A general criterion for judging the limits within which the approximation is acceptable is indicated. It is shown that even in parametrically excited vibrating systems damping can have a destabilising effect similar to the destablising effect known to exist in nonconservative elastic systems. Author

Subject Categories:

  • Machinery and Tools
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE