Results 51 to 60 of about 30,349 (319)

Overturning protection control of lunar-planetary lander with semi-active shock absorber

open access: yesNihon Kikai Gakkai ronbunshu, 2014
This paper describes the attitude control method for overturning prevention for a lunar planetary lander which uses a semi-active damper on the landing leg.
Takao MAEDA   +2 more
doaj   +1 more source

Tension Estimation Method for Cable With Damper Using Natural Frequencies and Two-Point Mode Shapes With Uncertain Modal Order

open access: yesFrontiers in Built Environment, 2022
In the maintenance of cable structures, such as cable-stayed bridges, cable safety is assessed based on the cable tension. In Japan, the cable tension is generally estimated from the cable’s natural frequencies using the higher-order vibration method. In
Aiko Furukawa   +2 more
doaj   +1 more source

Influence of Geometric Design on Mechanical Performance of Auxetic Metastructure

open access: yesAdvanced Engineering Materials, EarlyView.
Strategic geometric reinforcement transforms auxetic performance. This study evaluates 3D‐printed arrowhead metastructures, revealing that a modified design with local ring reinforcement suppresses premature failure to achieve superior energy absorption and structural efficiency.
Muhammad Gulzari   +3 more
wiley   +1 more source

Fluid damper that applies electric and magnetic fields to a conductive fluid and ferrite particles

open access: yesNihon Kikai Gakkai ronbunshu, 2014
A fluid damper that applies electric and magnetic fields to a conductive fluid and ferrite particles is developed in order to act as both of a passive and a semiactive type vibration control device.
Taichi MATSUOKA, Tomohiro SUGITA
doaj   +1 more source

Experimental and Numerical Modal Analysis of Composite Sandwich Structures Using Surfboards as Model Systems

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents an experimental and numerical modal investigation of composite sandwich structures using surfboards as model systems. By comparing different core materials and reinforcement strategies, the study demonstrates how local stiffeners influence vibrational response and introduce characteristic modal features, highlighting modal ...
Brett Connellan   +4 more
wiley   +1 more source

Modeling of magnetic damper composed of ring magnet and coaxially and relatively moving conducting disk considering skin effect

open access: yesNihon Kikai Gakkai ronbunshu, 2016
A magnetic damper composed of a permanent magnet and a conducing plate has the advantage that the magnetic damper can generate a damping force with no physically contact.
Kosho YAMANE   +3 more
doaj   +1 more source

A Concentric Design of a Bypass Magnetorheological Fluid Damper with a Serpentine Flux Valve

open access: yesActuators, 2020
This work presents a new concentric design structure of a bypass magnetorheological (MR) damper with a serpentine flux valve type. In this design, the serpentine valve is installed not in the middle of the piston but on the bypass channel of the damper ...
Muhammad Hafiz Idris   +4 more
doaj   +1 more source

Cable and Damper Vibration Studies [PDF]

open access: yesTransactions of the American Institute of Electrical Engineers, 1936
Discussion and author's closure of a paper by L. A. Pipes published in the June 1936 issue, pages 600–14, and presented for oral discussion at the conductor vibration session of the AIEE summer convention, Pasadena, Calif., June 23, 1936.
openaire   +2 more sources

Triple Junctions as Dislocation‐Like Defects: The Role of Grain Boundary Crystallography Revealed by Experiment and Atomistic Simulation

open access: yesAdvanced Engineering Materials, EarlyView.
Grain boundary triple junctions are an essential ingredient of the microstructure of polycrystalline materials. In this study, a triple junction is observed using atomic‐resolution scanning transmission electron microscopy and characterized. Computer simulations reveal that the junction has a dislocation character that is determined by the joining ...
Tobias Brink   +4 more
wiley   +1 more source

Damping mechanisms of vibration reduction system with granular materials for vibration system with high natural frequency (Proposal of “relative motion mass”, “rotating mass”, and their consideration)

open access: yesNihon Kikai Gakkai ronbunshu, 2017
We investigated the damping mechanism of a granular material damping system applied to reducing vibration in structures that have a high natural frequency and small vibration displacement. Experiments were conducted under several conditions of total mass
Tomoko KOGA   +3 more
doaj   +1 more source

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