Bending Vibration Suppression of a Flexible Multispan Shaft Using Smart Spring Support

Table 1

Typical parameters of a helicopter tail-shaft.

Properties	Value/unit
	2800/(kg⋅m^−3)
	7 × 10^10/Pa
	2.7 × 10^10/Pa
	90/mm
	84/mm
	3.1/m
	0.85/m
, ,	0.75/m
,	1.15 × 10^7/(N⋅m^−1)
, ,	1.5 × 10^5/(N⋅m^−1)
,	0
, ,	20/(N⋅s⋅m^−1)
	0.1/mm
	4200/(r⋅min^−1)