Results 31 to 40 of about 32,294 (305)

Effect of Inerter on frequency characteristic of multi-DOF torsional vibration system

Nihon Kikai Gakkai ronbunshu, 2017
Torsional vibration problem is one of the major technical problems of the industrial rotating machinery, especially, geared rotor system such as automatic transmissions from the view point of the transient response.
Aki OGAWA, Kazuhiko ADACHI
doaj   +1 more source

Experimental investigation into amplitude-dependent modal properties of an eleven-span motorway bridge [PDF]

, 2015
The authors would like to thank their supporters. New Zealand Earthquake Commission (EQC) Research Foundation provided financial support for experimental work (Grant No. UNI/578). New Zealand Transport Agency (NZTA) provided access to the bridge.
Beskhyroun, Sherif, Chen, Ge-Wei, Omenzetter, Piotr   +2 more
core   +1 more source

Vibration and buckling of thin-walled composite I-beams with arbitrary lay-ups under axial loads and end moments [PDF]

, 2013
A finite element model with seven degrees of freedom per node is developed to study vibration and buckling of thin-walled composite I-beams with arbitrary lay-ups under constant axial loads and equal end moments.
Banerjee J. R., Banerjee J. R., Bank L. C., Bleich F., Gjelsvik A., Jaehong Lee, Jones R.M., Joshi A., Joshi A., Kaya M., Kim N. I., Kim N. I., Kim N. I., Lee J., Lee J., Lee J., Leung A.Y. T., Leung A.Y. T., Leung A.Y. T., Leung A.Y. T., Li J., Li J., Machado S.P., Mohri F., Mohri F., Pavlovic R., Sapountzakis E. J., Sapountzakis E. J., Sapountzakis E. J., Thuc Phuong Vo, Timoshenko S., Timoshenko S., Vlasov V. Z., Voros G. M.   +33 more
core   +2 more sources

Vibration Characteristics Analysis of a Piezoelectric Disc or Torsional Transducers [PDF]

Transactions of the Korean Society for Noise and Vibration Engineering, 2005
This paper presents an analytical approach for the vibration characteristics of a piezoelectric disc for torsional vibration transducers. The characteristic equation of the piezoelectric annular disc has been derived from Gibbs` free energy equations and mechanical and electrical equilibrium.
openaire   +1 more source

Calculation and Optimal Design of Rotor Shaft Torsional Vibration of a Helicopter Transmission System

Jixie chuandong, 2022
The rotor shaft vibration of the helicopter transmission system is an important factor affecting its operational reliability. In order to improve the safety margin of torsional vibration of the rotor shaft system of a coaxial counter-rotating double ...
De Ni, Tuanjie Zhong, Jing Wei, Miaofei Cao, Bin Peng   +4 more
doaj  

A strategy for delivering high torsionality in longitudinal-torsional ultrasonic devices [PDF]

, 2011
A composite longitudinal-torsional vibration mode has applications in ultrasonic motors, ultrasonic welding and ultrasonic drilling. There are two ways to obtain this vibration behaviour using a single transducer, namely (i) coupling of a longitudinal ...
Al-Budairi, H., Harkness, P., Lucas, M.
core   +1 more source

A Study on the Damping Characteristics of Torsional Vibration in Diesel Engines

JOURNAL OF THE MARINE ENGINEERING SOCIETY IN JAPAN, 1985
The empirical formulae, being able to estimate engine damping ratio and torsional vibration amplitude, are derived from the experimental results both for high-speed and for low-speed diesel engines mentioned in the previous paper, in which the torsional angular displacements were measured at the free-end of the crankshafts. The relationship between the
Shoichi Iwamoto, Katsuhiko Wakabayashi
openaire   +2 more sources

Transient torsional vibration analysis of marine diesel engine under short-circuit impact

Zhongguo Jianchuan Yanjiu
ObjectivesIn order to formulate an optimization scheme for the torsional vibration parameters of a marine diesel generator shaft system, it is necessary to analyze the transient torsional vibration characteristics of the diesel generator under short ...
Congcong XU, Gang LIANG, Jie TAO, Yafei JIAO, Jinyuan CHEN, Pengcheng WANG, Mengcan DENG   +6 more
doaj   +1 more source

Design Improvement of a Viscous-Spring Damper for Controlling Torsional Vibration in a Propulsion Shafting System with an Engine Acceleration Problem

Journal of Marine Science and Engineering, 2020
In order to cope with strengthened marine environmental regulations and to reduce fuel consumption, recently constructed vessels are equipped with an ultra-long stroke engine and apply engine de-rating technology.
Jaehoon Jee, Chongmin Kim, Yanggon Kim
doaj   +1 more source

Master-slave synchronous control method for attenuating dual mode electromechanical transmission system torsional vibration

Journal of Low Frequency Noise, Vibration and Active Control, 2022
The high-power electromechanical transmission (EMT) system is a typical dual-mode hybrid power transmission system. The torque fluctuation of internal combustion engine causes serious shock and vibration problems of EMT.
Wei Zhang, Hui Liu, Xun Zhang, Zhen Wang, Pengfei Yan   +4 more
doaj   +1 more source