Abstract :
[en] The dynamic behavior of bladed disks in resonance crossing
has been intensively investigated in the community of
turbomachinery, addressing the attention to (1) the transienttype
response that appear when the resonance is crossed with a
finite sweep rate and (2) the localization of the vibration in the
disk due to the blade mistuning. In real conditions, the two
mentioned effects coexist and can interact in a complex manner.
This paper investigates the problem by means of analytic
solutions obtained through asymptotic expansions, as well as
numerical simulations. The mechanical system is assumed as
simple as possible: a 2-dof linear system defined through the
three parameters: damping ratio , frequency mistuning , rotor
acceleration . The analytic solutions are calculated through
the multiple-scale method.
Scopus citations®
without self-citations
0