scholarly journals Non-linear dynamic characteristics and optimal control of giant magnetostrictive film subjected to in-plane stochastic excitation

AIP Advances ◽  
2014 ◽  
Vol 4 (3) ◽  
pp. 031322 ◽  
Author(s):  
Z. W. Zhu ◽  
W. D. Zhang ◽  
J. Xu
Keyword(s):  
Optimal Control ◽  
Dynamic Characteristics ◽  
Stochastic Excitation ◽  
Linear Dynamic ◽  
Non Linear ◽  
Magnetostrictive Film

scholarly journals Effect of Spark Condition on Non-Linear Dynamic Characteristics of Natural Gas Engine

2012 ◽  
Vol 1 ◽  
pp. 150-155 ◽  
Author(s):  
Wang Li-Yuan ◽  
Yang Li-Ping ◽  
Jing Hai-Guo ◽  
Qaisar Hayat ◽  
Liu Guo-Dong
Keyword(s):  
Natural Gas ◽  
Dynamic Characteristics ◽  
Gas Engine ◽  
Natural Gas Engine ◽  
Linear Dynamic ◽  
Non Linear

scholarly journals Analysis of Non-Linear Dynamic Characteristics of Motor Driven by Conventional Servo Amplifier.

2000 ◽  
Vol 66 (647) ◽  
pp. 2303-2309 ◽  
Author(s):  
Fumitoshi SAKAI ◽  
Yoshitsugu KAMIYA ◽  
Hiroaki SEKI ◽  
Masatoshi HIKIZU
Keyword(s):  
Dynamic Characteristics ◽  
Linear Dynamic ◽  
Non Linear

scholarly journals Use of Bispectrum Analysis to Inspect the Non-Linear Dynamic Characteristics of Beam-Type Structures Containing a Breathing Crack

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1177
Author(s):  
Li Cui ◽  
Hao Xu ◽  
Jing Ge ◽  
Maosen Cao ◽  
Yangmin Xu ◽  
...  
Keyword(s):  
Damage Detection ◽  
Dynamic Characteristics ◽  
Structural Damage ◽  
Damage Identification ◽  
Crack Depth ◽  
Excitation Frequency ◽  
Breathing Crack ◽  
Engineering Structures ◽  
Linear Dynamic ◽  
Non Linear

A breathing crack is a typical form of structural damage attributed to long-term dynamic loads acting on engineering structures. Traditional linear damage identification methods suffer from the loss of valuable information when structural responses are essentially non-linear. To deal with this issue, bispectrum analysis is employed to study the non-linear dynamic characteristics of a beam structure containing a breathing crack, from the perspective of numerical simulation and experimental validation. A finite element model of a cantilever beam is built with contact elements to simulate a breathing crack. The effects of crack depth and location, excitation frequency and magnitude, and measurement noise on the non-linear behavior of the beam are studied systematically. The result demonstrates that bispectral analysis can effectively identify non-linear damage in different states with strong noise immunity. Compared with existing methods, the bispectral non-linear analysis can efficiently extract non-linear features of a breathing crack, and it can overcome the limitations of existing linear damage detection methods used for non-linear damage detection. This study’s outcome provides a theoretical basis and a paradigm for damage identification in cracked structures.

A coupled field study on the non-linear dynamic characteristics of an electrostatic micropump

2004 ◽  
Vol 273 (4-5) ◽  
pp. 989-1006 ◽  
Author(s):  
T.Y. Ng ◽  
T.Y. Jiang ◽  
Hua Li ◽  
K.Y. Lam ◽  
J.N. Reddy
Keyword(s):  
Field Study ◽  
Dynamic Characteristics ◽  
Linear Dynamic ◽  
Coupled Field ◽  
Non Linear

Effect of Friction on Dynamics of Gear System Featuring Confluence Transmission

2012 ◽  
Vol 163 ◽  
pp. 18-22 ◽  
Author(s):  
Hao Dong Gao ◽  
Yi Du Zhang ◽  
Xiang Sheng Gao
Keyword(s):  
Dynamic Model ◽  
Dynamic Behavior ◽  
Dynamic Characteristics ◽  
Periodic Motion ◽  
Gear System ◽  
Jump Phenomenon ◽  
Linear Dynamic ◽  
Non Linear ◽  
Gear Systems ◽  
The Impact

In order to investigate the effect of friction on gear system featuring confluence transmission, a non-linear dynamic model of three-gear system having two gear pairs was built. The influence of gear systems dynamic characteristics caused by changing of friction coefcient was researched. With the changing of friction coefcient, left-right gear pairs show dynamic behavior with coexist of same periodic motion, coexist of different periodic motion and chaos. With the increase of friction coefcient, the jump phenomenon of amplitude occurred, the impact of gear system became larger.

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