Results 21 to 30 of about 8,003 (259)
Journal of Marine Science and Engineering, 2022 Propeller-induced longitudinal vibration resonance in marine propulsion shafting systems causes great harm to the hull structure and is the primary source of shipboard noise. Integrating a friction damper with designed parameters into thrust bearings can
Ganbo Zhang, Yao Zhao, Wei Chu
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Viscous damping exciting friction-induced vibration in pin-on-disk systems
Results in Engineering, 2021 When engineers add damping to a vibrating system, they typically expect that this will result in a more stable system. However, a few rather complex examples are known that show the opposite trend: situations in which damping generates friction-induced ...
Matthias Graf, Tobias Lankenau
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FrictionIn this work, a friction-induced vibration model for water-lubricated bearings (WLBs) is developed. The model incorporates interfacial mechanical effects, including the stiffness and damping coefficients of the water film, contact stiffness of asperities,
Guo Xiang +6 more
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Acoustic Energy Transfer by Friction Induced Vibrations
Procedia Engineering, 2017 Abstract Friction-induced vibrations are often investigated for their unwanted effects, such as surface wear and dynamic instabilities. This article focuses on the exploitation of friction-induced vibrations to transfer the energy between different acoustic fields by an interface under frictional contact.
Lacerra, Giovanna +3 more
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Mechanical Engineering JournalIn a printer fuser assembly, unpleasant noise caused by friction-induced vibrations can occur owing to friction between the pad and the inner surface of the fixing sleeve.
Yutaka NAKANO +4 more
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Advances in Mechanical Engineering, 2014 This paper presents friction-induced vibration (FIV) caused by combined mode-coupling and negative damping effects in a simple FIV model. In doing so, a new four-degree-of-freedom linear model which consists of a slider and a block is proposed and then ...
S. M. Hashemi-Dehkordi +2 more
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Arthropod-Inspired Miniature Modular Vibration Direct-Drive Robot With Untethered Locomotion. [PDF]
Adv Sci (Weinh)This work presents an arthropod‐inspired untethered miniature modular vibration direct‐drive robot. By utilizing standardized driving units and nested locking interfaces, on‐demand reconfiguration into quadruped, hexapod, octopod, and circular morphologies is achieved.
Zhang S, Liu Z, Liu Y, Wang D, Liu Y.
europepmc +2 more sources
Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying
Advanced Engineering Materials, EarlyView.An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara +8 more
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Avoidance of friction induced vibrations on seals [PDF]
PAMM, 2008 AbstractIn many fields of technical and non–technical applications occur friction induced vibrations. If undesired, which applies to most of these oscillations, different methods exist for their avoidance or at least reduction. A recently investigated method, the systematic treatment of contacting surfaces by different techniques is shown in this work ...
Matthias Wangenheim, Matthias Kröger
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Advanced Engineering Materials, EarlyView.Near‐surface deuterium enrichment profiles for different microstructural types of TiAl after exposure at 700 °C in a heavy water‐containing environment. The deuterium levels are significantly higher than expected from natural occurrence, indicating that the heavy water dissociated during the exposure treatment and entered the specimens.
Jonathan D. H. Paul +5 more
wiley +1 more source