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
Descriptors:
Subject Categories:
- Machinery and Tools
- Mechanics