Vibration Analysis of Elevator Rope (Comparison Between Experimental Results and Calculated Results)

Kimura, Hiroyuki; Iijima, Tadashi; Matsuo, Shigenori; Fujita, Yoshiaki

doi:10.1299/kikaic.74.31

Cited by 8 publications

(2 citation statements)

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“…On the other hand, one of the authors has analyzed lateral vibration of a rope by the finite difference method which inputs building displacement and ground displacement to the rope, and it has sufficient accuracy if it is batch processing (6), (7) . However, in order to analyze in real time during an earthquake, it is necessary to analyze by simplified calculation method.…”

Section: Journal Of System Design and Dynamicsmentioning

confidence: 99%

Simplified Calculation Method for Detecting Elevator Rope Deflection during Earthquake (Considering the Distribution of Rope Tension)

Kimura

Kuguminato

2013

JSDD

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When an elevator rope for a high-rise building is forcibly excited by long-period ground motion, rope displacement becomes large even if the ground acceleration is small. Therefore, detecting the rope sway in real time is important to avoid damage during and after earthquakes. In a previous paper, when elevator cage is moving, a simplified calculation method, based on a single-degree-of-freedom (SDOF) system, for estimating rope displacement during an earthquake by using the building acceleration and ground acceleration has been presented. This simplified calculation method is applied to main rope, which resonates only once with building's sway while the elevator is moving. In the case of the main rope, the results of this simplified calculation method agree with those of the conventional finite difference method (FDM), within the 20% error margin. In this paper, a simplified calculation method is applied to compensating rope, which resonates twice with building's sway while the elevator is moving, by considering distribution of the rope tension. Finite difference analyses of rope vibration are also performed to verify the validity of the simplified calculation method. The results of this simplified calculation method agree with those of the conventional finite difference method, within the +20%,-30% error margin.

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Section: Journal Of System Design and Dynamicsmentioning

confidence: 99%

Simplified Calculation Method for Detecting Elevator Rope Deflection during Earthquake (Considering the Distribution of Rope Tension)

Kimura

Kuguminato

2013

JSDD

Self Cite

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“…Teshima et al proposed a numerical analysis technique using the finite difference method and evaluated a fundamental vibration response of elevator ropes [6]. Using Teshima's method, Kimura et al investigated various responses of elevator ropes, such as forced vibration [7] and vibration with suppressor [8], and compared calculated results and experimental results using actual elevator ropes [9]. Kimura also proposed a simplified calculation method that replaces the wave equation with a single-degree-of-freedom system model [10].…”

Section: Introductionmentioning

confidence: 99%

Vibration response analysis technique for elevator wire rope

Minagawa,

Fujita

2023

IOP Conf. Ser.: Mater. Sci. Eng.

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Wire rope is an element often used in transportation infrastructure and systems such as bridges, elevators, ropeways, funiculars and so on. Generally, wire ropes require a high level of safety because they suspend heavy and important components such as roadways in bridges, cages and cabins in elevators, ropeways and funiculars. In addition to dead loads like roadways, wire ropes are subjected to dynamic loads caused by earthquakes, wind and moving cars, etc. Therefore, it is important to accurately simulate the dynamic response of wire ropes to dynamic loads to ensure safety of wire ropes. This paper deals with techniques for vibration response analyses of wire ropes. Techniques in this paper specially focused on a transverse vibration of wire ropes for elevators because their response is complicated by the moving cage and tension distribution. Vibration response analysis techniques using the difference method and a simplified mass point model will be introduced in this paper.

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Vibration Analysis of Elevator Rope(Simplified Calculation Method for Detecting Rope Deflection of Moving Cage during Earthquake)

Kimura

Min²,

Ishii³

et al. 2011

Trans.JSME, Ser.C

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When an elevator rope for a high-rise building is forcibly excited by long-period ground motion, rope displacement becomes large even if the ground acceleration is small. Therefore, detecting the rope sway in real time is important to avoid damage during and after earthquakes. In a previous paper, when elevator cage is stationary, a simplified calculation method, based on a single degree of freedom (SDOF) system, for estimating rope displacement during an earthquake by using the building acceleration and ground acceleration is presented. However, calculation method when the cage is moving was not shown. In this paper, a simplified calculation method for estimating rope displacement of a moving elevator cage during earthquake is presented. Finite difference analyses of rope vibration are also performed to verify the validity of the simplified method. The results of this simplified calculation method agree with those of the conventional finite difference method (FDM), within the 20% error margin.

show abstract

Vibration Analysis of Elevator Rope (Comparison Between Experimental Results and Calculated Results)

Cited by 8 publications

References 0 publications

Simplified Calculation Method for Detecting Elevator Rope Deflection during Earthquake (Considering the Distribution of Rope Tension)

Simplified Calculation Method for Detecting Elevator Rope Deflection during Earthquake (Considering the Distribution of Rope Tension)

Vibration response analysis technique for elevator wire rope

Vibration Analysis of Elevator Rope(Simplified Calculation Method for Detecting Rope Deflection of Moving Cage during Earthquake)

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