Results 171 to 180 of about 9,879 (221)

Performance of magnetorheological elastomer based torsional vibration isolation system for dynamic loading conditions

Journal of Central South University, 2020
Vibration isolation is an effective method to mitigate unwanted disturbances arising from dynamic loading conditions. With smart materials as suitable substitutes, the conventional passive isolators have attained attributes of semi-active as well as the active control system.
Shenoy K. Praveen, Sai Aditya Raman Kuchibhatla, Abhishek Kumar Singh, K. V. Gangadharan   +3 more
openaire   +1 more source

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 ...
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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 ...
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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

Comparative study on non-traditional torsional vibration isolators for automotive clutch dampers

Noise Control Engineering Journal, 2018
In this study, the torque transmissibility of non-traditional passive torsional vibration isolators used for automotive clutch dampers were investigated both theoretically and experimentally. The vibration isolation performance of two types of non-traditional passive torsional vibration isolators, an anti-resonant vibration isolator and a centrifugal ...
Mai Van Ngoc, S.C. Shin, G.W. Kim
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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

Next Generation Torsional Vibration Isolation Tool Increases BHA Reliability Proven by Field Operations in North Sea

Abu Dhabi International Petroleum Exhibition & Conference, 2021
Abstract High Frequency Torsional Oscillations (HFTO) generate high torsional loads in the BHA causing cracks, damaged electronics or twist-offs. A new Torsional Vibration Isolator tool (TVI) protects the BHA by restricting vibrations to the tools between bit and TVI.
Armin Kueck, Vincent Kulke, Cord Schepelmann, Volker Peters, Georg-Peter Ostermeyer, Hanno Reckmann   +5 more
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Torsional vibration analysis of a planetary gear type antiresonant vibration isolator using transfer matrix method, Part II: Application to automotive powertrain

Journal of Mechanical Science and Technology, 2020
In this research, an analytical modeling and analysis approach called the transfer matrix method is applied to study a planetary gear type dynamic antiresonant vibration isolator (PG-DAVI) for complex rotational systems. In this part 2 of series papers, the transfer matrix method is applied to an automotive powertrain system with an embedded PG-DAVI to
Hyeongill Lee, Hwan-Sik Yoon
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Lightweight, ultra-low-frequency torsional vibration isolator based on Kresling origami

Smart Materials and Structures
Abstract Springs inspired by the Kresling origami pattern have recently gained prominence as a foundation for developing functional engineering systems with versatile properties, catering to niche applications across various technological fields.
Ravindra Masana, Shadi Khazaaleh, Mohammed F Daqaq   +2 more
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Torsional vibration isolating motor mounting system, mounting arrangement, assemblies including the same

The Journal of the Acoustical Society of America, 1986
Motor vibration isolating arrangements and systems using such arrangements are disclosed. In preferred arrangements, leaf spring mounting arms have low torsional spring constants and yet strength to withstand shipping and handling loads. The mounting member spring constants for axial, radial and tilting vibration modes are selected in specific forms so
openaire   +1 more source