TY - JOUR
T1 - Semi-active dynamic absorber of a ship propulsion shafting based on MREs
AU - Lu, Kun
AU - Liu, Ling
AU - Yang, Zhirong
AU - Gong, Xinglong
AU - Rao, Zhushi
AU - Xie, Zhongliang
N1 - Publisher Copyright:
© 2017, Editorial Office of Journal of Vibration and Shock. All right reserved.
PY - 2017/8/15
Y1 - 2017/8/15
N2 - According to longitudinal vibration characteristics of a marine propulsion shafting, the vibration reduction mechanism of dynamic absorbers was studied. The influences of semi-active dynamic absorbers' parameters on their vibration reduction effect were analyzed. Magneto-rheological elastomer (MRE) was a kind of smart materials, its shear modulus could be controlled by an external magnetic field. Based on this property, a semi-active dynamic absorber with adjustable stiffness was designed. Its natural frequency-shifting feature was tested. Furthermore, The vibration reduction effect tests for a model of a ship propulsion shafting with a scale ratio of 1∶4 and MREs-based SDA under the condition of varying rotating speed were conducted. The results showed that the designed MREs-based SDA has a natural frequency-shifting range of 12.3 Hz, its natural frequency-shifting feature curve has a good linearity; it has a better vibration energy absorption capacity than classic passive dynamic absorbers do under different rotating speeds; the feasibility of using MREs to design semi-active dynamic absorbers for a ship propulsion shafting is verified.
AB - According to longitudinal vibration characteristics of a marine propulsion shafting, the vibration reduction mechanism of dynamic absorbers was studied. The influences of semi-active dynamic absorbers' parameters on their vibration reduction effect were analyzed. Magneto-rheological elastomer (MRE) was a kind of smart materials, its shear modulus could be controlled by an external magnetic field. Based on this property, a semi-active dynamic absorber with adjustable stiffness was designed. Its natural frequency-shifting feature was tested. Furthermore, The vibration reduction effect tests for a model of a ship propulsion shafting with a scale ratio of 1∶4 and MREs-based SDA under the condition of varying rotating speed were conducted. The results showed that the designed MREs-based SDA has a natural frequency-shifting range of 12.3 Hz, its natural frequency-shifting feature curve has a good linearity; it has a better vibration energy absorption capacity than classic passive dynamic absorbers do under different rotating speeds; the feasibility of using MREs to design semi-active dynamic absorbers for a ship propulsion shafting is verified.
KW - Longitudinal vibration control of propulsion shafting
KW - Magnetorheological elastomers (MREs)
KW - Natural frequency-shifting feature
KW - Semi-active dynamic absorber (SDA)
UR - http://www.scopus.com/inward/record.url?scp=85032307746&partnerID=8YFLogxK
U2 - 10.13465/j.cnki.jvs.2017.15.006
DO - 10.13465/j.cnki.jvs.2017.15.006
M3 - 文章
AN - SCOPUS:85032307746
SN - 1000-3835
VL - 36
SP - 36
EP - 42
JO - Zhendong yu Chongji/Journal of Vibration and Shock
JF - Zhendong yu Chongji/Journal of Vibration and Shock
IS - 15
ER -
