scholarly journals Low frequency vibration reduction method for floating slab tracks based on tuned viscous mass damper

2021 ◽  
Author(s):  
Wei WEI ◽  
ShengYang ZHU ◽  
WanMing ZHAI ◽  
QingLai ZHANG
Keyword(s):  
Reduction Method ◽  
Vibration Reduction ◽  
Low Frequency ◽  
Low Frequency Vibration ◽  
Mass Damper ◽  
Viscous Mass

21416 Reduction method of Residual Stress of Welded Joint Using Low Frequency Vibration

2010 ◽  
Vol 2010.16 (0) ◽  
pp. 491-492
Author(s):  
Shigeru Aoki ◽  
Tadashi Nishimura ◽  
Tetsumaro Hiroi ◽  
Kenji Hirai ◽  
Katsumi Kurita ◽  
...  
Keyword(s):  
Residual Stress ◽  
Reduction Method ◽  
Welded Joint ◽  
Low Frequency ◽  
Low Frequency Vibration

Trees as large-scale natural metamaterials for low-frequency vibration reduction

2019 ◽  
Vol 199 ◽  
pp. 737-745 ◽  
Author(s):  
Yi-fan Liu ◽  
Jian-kun Huang ◽  
Ya-guang Li ◽  
Zhi-fei Shi
Keyword(s):  
Large Scale ◽  
Vibration Reduction ◽  
Low Frequency ◽  
Low Frequency Vibration

scholarly journals Enhanced Piezoelectric Shunt Design

2003 ◽  
Vol 10 (2) ◽  
pp. 127-133 ◽  
Author(s):  
Chul H. Park ◽  
Daniel J. Inman
Keyword(s):  
Vibration Mode ◽  
Vibration Suppression ◽  
Vibration Reduction ◽  
Low Frequency ◽  
Internal Resistance ◽  
Vibration Modes ◽  
Low Frequency Vibration ◽  
Design Resistance ◽  
Piezoelectric Shunt ◽  
Shunt Circuit

Piezoceramic material connected to an electronic shunt branch circuit has formed a successful vibration reduction device. One drawback of the conventional electronic shunt circuit is the large inductance required when suppressing low frequency vibration modes. Also, the large internal resistance associated with this large inductance exceeds the optimal design resistance needed for low frequency vibration suppression. To solve this problem, a modified and enhanced piezoelectric shunt circuit is designed and analyzed by using mechanical-electrical analogies to present the physical interpretation. The enhanced shunt circuit developed in this paper is proved to significantly reduce the targeted vibration mode of a cantilever beam, theoretically and experimentally.

A Study on the Fine Structure of the Lateral Line Organ of the Sea Eel

1973 ◽  
Vol 31 ◽  
pp. 648-649
Author(s):  
K. Hama
Keyword(s):  
Fine Structure ◽  
Electron Microscope ◽  
Lateral Line ◽  
Low Frequency ◽  
Sensory Cells ◽  
Apical Surface ◽  
Voltage Electron ◽  
Sensory Epithelia ◽  
Low Frequency Vibration ◽  
Transmission Electron

The lateral line organs of the sea eel consist of canal and pit organs which are different in function. The former is a low frequency vibration detector whereas the latter functions as an ion receptor as well as a mechano receptor.The fine structure of the sensory epithelia of both organs were studied by means of ordinary transmission electron microscope, high voltage electron microscope and of surface scanning electron microscope.The sensory cells of the canal organ are polarized in front-caudal direction and those of the pit organ are polarized in dorso-ventral direction. The sensory epithelia of both organs have thinner surface coats compared to the surrounding ordinary epithelial cells, which have very thick fuzzy coatings on the apical surface.

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