Abstract:
The vibration
response formulas of the mechanical system under the affect of
the vari-frequency exciting force are deduced. It is proved by
the theoretical analysis and experimental results that the
vibration response amplitude of the mechanical system under the
affect of the vari-frequency exciting force is far smaller than
that under the affect of the constant frequency exciting force
on condition that the exciting force amplitudes are just the
same; while the vari-frequency rate α increases to 5 Hz per
second the vibration amplitude will decrease to 10% only as low
as that under the affect of the constant frequency exciting
force. All these conclusions will be of significance for
revealing the mechanism of suppressing chatter in vari-speed
cutting and analyzing the experimental results of sine-wave
scanning exciting test.
Key words:
Constant frequency exciting force Vari-frequency exciting force Vibration response of mechanical
system
* This project is supported by Special Scientific Research Foundation
for Ph.D. of the Chinese Education Committee. Manuscript
received on May 15, 1994
|