Results 21 to 30 of about 56,421 (241)

Vibration analysis of elevator rope with vibration suppressors (Identification of flexural rigidity, viscous damping and structural damping)

Nihon Kikai Gakkai ronbunshu, 2021
When an elevator rope for a high-rise building is forcibly excited by the displacement of the building induced by wind force and/or by long-period ground motion, rope displacement becomes large even if the ground acceleration and the building ...
Hiroyuki KIMURA, Hiroto SUZUKI, Masahiro SEKIMOTO   +2 more
doaj   +1 more source

Ogilvie Grain Elevator -- Wrentham -- Laser Scanning -- 2022

, 2022
This is a data set that contains forty-one (41) scans of the Ogilvie Grain Elevator, Wrentham. All data was collected by the Capture2Preserv team between the 22nd and 23rd of August 2022.
Hvidberg, Madisen, Robinson, Christina, Dawson, Peter   +2 more
core   +1 more source

Novel payload dynamics on space elevator systems [PDF]

, 2006
A simple model of a payload ascending or descending a space elevator is developed to explore the underlying dynamics of the problem. It shown that an unconstrained payload at rest on a space elevator at synchronous radius is in an unstable equilibrium ...
Davis, Chris, McInnes, Colin R.
core   +3 more sources

The orbital siphon : A new space elevator concept [PDF]

, 2006
A new concept for propellantless payload transfer from the surface of the Earth to Earth escape is presented. Firstly, a simple model of a payload ascending or descending a conventional space elevator is developed to explore the underlying dynamics of ...
Davis, Chris, McInnes, C.R.
core   +3 more sources

On the Control of the Technical Condition of Elevator Ropes Based on Artificial Intelligence and Computer Vision Technology

Advanced Engineering Research, 2023
Introduction. The safety problem and the situation with accidents during the operation of elevator installations are elucidated. The role of elevator rope defects as a factor of dangerous incidents is indicated from the point of view of statistics.
A. V. Panfilov, A. R. Yusupov, A. A. Korotkiy, B. F. Ivanov   +3 more
doaj   +1 more source

Suppression of transverse vibration of elevator rope using vertical vibration of counterweight

Nihon Kikai Gakkai ronbunshu, 2015
An elevator rope for high-rise building is forcibly excited by the displacement of the building caused by earthquakes and wind forces. In high-rise building, the elevator rope may resonate with the natural frequency of the building; hence, effective ...
Ibuki HIROSE, Hiroyuki KIMURA, Kou OGAWA
doaj   +1 more source

Free vibration analysis of a string with vibration suppressor

Nihon Kikai Gakkai ronbunshu, 2014
When an elevator rope for a high-rise building is forcibly excited by the displacements of the building induced by wind forces and/or by long-period ground motion.
Hiroyuki KIMURA
doaj   +1 more source

Free vibration analysis of a string with vibration suppressor located at center of the string (When gap between string and vibration suppressor is zero)

Nihon Kikai Gakkai ronbunshu, 2015
When an elevator rope for a high-rise building is forcibly excited by the displacements of the building induced by wind forces and/or by long-period ground motion, rope displacement becomes large even if the ground acceleration and the buildings ...
Hiroyuki KIMURA
doaj   +1 more source

Active vibration control of compensation rope by tension based on elevator car position and acceleration during operation of an elevator in a vibrating building

Nihon Kikai Gakkai ronbunshu, 2018
In Japan, elevator cannot be used during an earthquake, and out-of-service hours tend to be long after large earthquake. It leads to difficulty in evacuation, rescue, and so on.
Nanako MIURA, Akira SONE
doaj   +1 more source

Free vibration analysis of a string with vibration suppressor located at center of the string (When there is a gap between string and vibration suppressor)

Nihon Kikai Gakkai ronbunshu, 2016
When an elevator rope for a high-rise building is forcibly excited by the displacements of the building induced by wind forces and/or by long-period ground motion, rope displacement becomes large even if the ground acceleration and the buildings ...
Hiroyuki KIMURA
doaj   +1 more source