Results 181 to 190 of about 48,925 (221)

Development of a model predictive controller for an active torsional vibration damper to suppress torsional vibrations in vehicle powertrains

Proceedings of the Institution of mechanical engineers. Part D, journal of automobile engineering, 2021
The pressure of exhaust emission regulations on automotive manufacturers to reduce environmental pollution and fuel consumption of internal combustion engines (ICEs) have stimulated the works on the downsizing, downspeeding, and turbo supercharging ...
Alişan Yüceşan, A. Mugan
semanticscholar   +1 more source

Development and control of an active torsional vibration damper for vehicle powertrains

Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics, 2021
Due to environmental pollution concerns, emission regulations on internal combustion engines (ICEs) have been tightening and the importance of fuel efficiency has become pronounced.
Alişan Yüceşan, A. Mugan
semanticscholar   +1 more source

A torsion–translational vibration isolator with quasi-zero stiffness

Nonlinear Dynamics, 2019
In this paper, a torsion–translational quasi-zero-stiffness (TT QZS) isolator with convex ball–roller mechanisms was proposed to attenuate the torsion and translational vibrations along shaft systems simultaneously. The mathematical model of the isolator was established, based on which the static characteristics of the isolator were analyzed and the ...
Qianlong Zhang, Shuyan Xia, Daolin Xu, Zhike Peng   +3 more
openaire   +1 more source

Halbach-array torsional nonlinear vibration isolator and its application to floating-slab track

Nonlinear Dynamics
Zixi Huang, Guangnan Zhu, Tao Yang, Rongchun Hu, Bolong Jiang   +4 more
openaire   +2 more sources

A semi‐active isolator for torsional vibrations

PAMM, 2008
AbstractModern combustion engines produce strong rotational vibrations which could damage elements of the drive train such as the gearbox. A solution to this problem is to mount an isolating device on the output side of the motor. Its function is to filter the torque oscillations to deliver a clean averaged torque to the rest of the drive train ...
openaire   +1 more source

Harnessing the compressed-spring mechanism for a six-degrees-of-freedom quasi-zero-stiffness vibration isolation platform

, 2020
The compressed-spring structure is a simple and reliable mechanism to achieve negative stiffness, which has been vastly investigated for achieving quasi-zero-stiffness isolation.
Yisheng Zheng, Xinong Zhang, Yajun Luo, S. Xie, Ya-hong Zhang   +4 more
semanticscholar   +1 more source

Torsional vibration isolating motor mounting arrangement and method of making the same

The Journal of the Acoustical Society of America, 1980
Motor mounting system is designed so that the torsional mode resonant or natural frequency is less than twice the frequency of the motor power supply divided by the square root of two (√2). The illustrated mounting arrangements are "soft" with respect to torsional mode vibrations, and yet are "stiff" with respect to axial and tilting mode vibrations ...
openaire   +1 more source

Torsional vibration analysis of a planetary gear type antiresonant vibration isolator using transfer matrix method, Part I: System modeling

Journal of Mechanical Science and Technology, 2020
Recently, a new type of vibration isolator called a dynamic antiresonant vibration isolator (DAVI) has been studied for torsional systems as well as translational systems. In the DAVI for torsional systems, the inertia coupling for the anti-resonance effect is generated by a planetary gear that connects control inertia and inertias at the input and ...
Hyeongill Lee, Hwan-Sik Yoon
openaire   +1 more source

MEMS Air-Damped Isolator for Dual-Axis Micromirrors: Broad-Range Frequency Vibration Isolation

Journal of microelectromechanical systems
The fracture failure of dual-axis micromirrors under the AEC-Q100 qualification test could not be mitigated by structural designs alone due to the need for compatibility in bending and torsional stiffness.
Longqi Ran, Wu Zhou, Jiangbo He, Jiahao Wu, Yan Wang, Xuhui Gong   +5 more
semanticscholar   +1 more source

Using Specimen Geometry to Isolate Flexural and Torsional Vibration Modes During Sonic Resonance

Journal of Testing and Evaluation, 2016
Abstract The ASTM E1875 method of sonic resonance is a convenient means of obtaining the elastic material properties of materials, particularly at high temperatures. The technique is performed by exciting a rectangular bar specimen to vibrate over a range of frequencies while measuring the amplitude of the bar’s vibrations.
Ryan B. Berke, Mark E. Walter
openaire   +1 more source