Couple analysis of vibro-acoustics by concentrated mass model

2019 ◽  
Vol 2019 (0) ◽  
pp. 310
Author(s):  
Shotaro HISANO ◽  
Satoshi ISHIKAWA ◽  
Shinya KIJIMOTO ◽  
Hiroyuki IWAMOTO
Keyword(s):  
Concentrated Mass ◽  
Mass Model ◽  
Couple Analysis

scholarly journals Effect of adding mass to rotor on in-plane squeal in automotive disc brake

2018 ◽  
Vol 211 ◽  
pp. 13006
Author(s):  
Takashi Nakae ◽  
Takahiro Ryu ◽  
Hiroki Goto ◽  
Daisuke Sato
Keyword(s):  
Dry Friction ◽  
Coulomb Friction ◽  
Disc Brake ◽  
Vibration Modes ◽  
Concentrated Mass ◽  
Mass Model ◽  
Out Of Plane ◽  
The Relationship

This study experimentally examined disc brake-generated inplane squeal by looking at vibration modes. The in-plane squeal was determined to be closely related to both the out-of-plane squeal that has directionality caused by Coulomb friction and the in-plane squeal caused by dry friction. The characteristics of in-plane squeal were also analytically investigated using a concentrated mass model formed by connected massless beams, and the relationship between mass added to the rotor and squeal suppression was clarified.

scholarly journals Nonlinear Torsional Vibration Analysis and Control of Semidirect Electromechanical Coupling Transmission System in Shearer

2019 ◽  
Vol 2019 ◽  
pp. 1-12
Author(s):  
Song Jiang ◽  
Wei Li ◽  
Lianchao Sheng ◽  
Jiajun Chen ◽  
Min Li
Keyword(s):  
Hopf Bifurcation ◽  
Torsional Vibration ◽  
Electromechanical Coupling ◽  
High Reliability ◽  
Permanent Magnet Synchronous Motor ◽  
Nonlinear Damping ◽  
Transmission System ◽  
Concentrated Mass ◽  
Mass Model ◽  
Hurwitz Stability

The nonlinear torsional vibration and instability oscillation caused by nonlinear damping in the shearer electromechanical coupling cutting transmission system in shearer driven by the permanent magnet synchronous motor (PMSM) is investigated in this paper. The electromechanical coupling transmission system in the shearer is equivalent to a concentrated mass model for the purpose of establishing the system dynamic model by the Lagrange–Maxwell equation. Then, the Routh–Hurwitz criterion is used to determine the torsional vibration critical point and stability region for the Hopf bifurcation for the cutting transmission system. According to the Routh–Hurwitz stability criterion, the Hopf bifurcation type and the effect of the supercritical Hopf bifurcation in the torsional vibration of the cutting transmission system are analyzed. Furthermore, based on the washout filter, the Hopf bifurcation controller is designed for suppressing the transmission system’s large vibration amplitude and unstable oscillation. In addition, the influences of the linear gain and nonlinear gain on the bifurcation point and the limit cycle amplitude are discussed. Finally, the numerical simulation results indicate the effectiveness of the designed controller. The research achievements can provide a theoretical basis for design or optimize the cutting transmission system of high-reliability shearer driven by PMSM.

271 Analysis of nonlinear pressure wave in elastic pipe by concentrated mass model

2010 ◽  
Vol 2010 (0) ◽  
pp. _271-1_-_271-6_
Author(s):  
Satoshi ISHIKAWA ◽  
Takahiro KONDOU ◽  
Kenichiro MATSUZAKI ◽  
Shota NAGANO
Keyword(s):  
Pressure Wave ◽  
Concentrated Mass ◽  
Mass Model

Sloshing Phenomenon Analysis by Using Concentrated Mass Model

2016 ◽  
Vol 2016 (0) ◽  
pp. 622
Author(s):  
Tatsuhiro YOSHITAKE ◽  
Satoshi ISHIKAWA ◽  
Takahiro KONDOU ◽  
Kenichiro MATSUZAKI
Keyword(s):  
Concentrated Mass ◽  
Mass Model ◽  
Sloshing Phenomenon

111 Two-dimensional Acoustic Analysis by Concentrated Mass Model

2012 ◽  
Vol 2012.22 (0) ◽  
pp. 47-50
Author(s):  
Satosh ISHIKAWA ◽  
Yosuke KOBA ◽  
Yuuki MORI ◽  
Shinya KIJIMOTO ◽  
Ryoma OWAKI
Keyword(s):  
Acoustic Analysis ◽  
Two Dimensional ◽  
Concentrated Mass ◽  
Mass Model

721 Two-dimensional Acoustic Analysis by Concentrated Mass Model

2012 ◽  
Vol 2012.65 (0) ◽  
pp. 265-266
Author(s):  
Ryoma Owaki ◽  
Satoshi Ishikawa ◽  
Shinya Kijimoto ◽  
Yosuke Koba
Keyword(s):  
Acoustic Analysis ◽  
Two Dimensional ◽  
Concentrated Mass ◽  
Mass Model

scholarly journals Analysis of Pulse Wave in Blood Vessel by Concentrated Mass Model

2013 ◽  
Vol 79 (804) ◽  
pp. 2731-2741
Author(s):  
Satoshi ISHIKAWA ◽  
Takahiro KONDOU ◽  
Kenichiro MATSUZAKI
Keyword(s):  
Blood Vessel ◽  
Pulse Wave ◽  
Concentrated Mass ◽  
Mass Model

Finite Element Modal Analysis of the Engine Front End Accessory Drive Systems

1994 ◽  
Vol 208 (1) ◽  
pp. 49-53
Author(s):  
H Zhu
Keyword(s):  
Finite Element ◽  
Structural Analysis ◽  
Modal Analysis ◽  
Normal Mode ◽  
Great Care ◽  
Concentrated Mass ◽  
Mass Model ◽  
Front End ◽  
Analytical Results ◽  
Drive Systems

The objectives of the study were to create finite element (FE) models for the engine front end accessory drive (FEAD) systems, to carry out normal mode analyses on the systems and to make a comparison of the predicted frequencies with those of measurement. The analytical results of three FEAD systems showed that more accurate frequencies were calculated using the complete accessory model than the concentrated mass model. Therefore the complete accessory model should be created for structural analysis of the FEAD systems. It was also pointed out that great care should be taken in the creation of FE models.

Analysis of nonlinear shallow water waves in a tank by concentrated mass model

2016 ◽  
Vol 371 ◽  
pp. 171-182 ◽  
Author(s):  
Satoshi Ishikawa ◽  
Takahiro Kondou ◽  
Kenichiro Matsuzaki ◽  
Satoshi Yamamura
Keyword(s):  
Shallow Water ◽  
Water Waves ◽  
Shallow Water Waves ◽  
Concentrated Mass ◽  
Mass Model
Sign in / Sign up

Export Citation Format

Share Document