Simple models for rope substructure mechanics: Application to electro-mechanical lifts

Ignacio Herrera, Stefan Kaczmarczyk

Research output: Contribution to conference typesPaper

Abstract

Mechanical systems modelled as rigid mass elements connected by tensioned slender structural members such as ropes and cables represent quite common substructures used in lift engineering and hoisting applications. Special interest is devoted by engineers and researchers to the vibratory response of such systems for optimum performance and durability. This paper presents simplified models that can be employed to determine the natural frequencies of systems having substructures of two rigid masses constrained by tensioned rope/cable elements. The exact solution for free un-damped longitudinal displacement response is discussed in the context of simple two-degree-of-freedom models. The results are compared and the influence of characteristics parameters such as the ratio of the average mass of the two rigid masses with respect to the rope mass and the deviation ratio of the two rigid masses with respect to the average mass is analyzed. This analysis gives criteria for the application of such simplified models in complex elevator and hoisting system configurations.
Original languageEnglish
Pages1-9
Number of pages9
DOIs
Publication statusPublished - 2 Jun 2016
Event5th Symposium on the Mechanics of Slender Structures (MoSS2015)) - The University of Northampton, Northampton, United Kingdom
Duration: 21 Sep 201522 Sep 2015

Conference

Conference5th Symposium on the Mechanics of Slender Structures (MoSS2015))
CountryUnited Kingdom
CityNorthampton
Period21/09/1522/09/15

Fingerprint

Mechanics
Cables
Structural members
Elevators
Natural frequencies
Durability
Engineers

Keywords

  • electro-mechanical lifts
  • mechanics
  • rope substructure mechanics

Cite this

Herrera, I., & Kaczmarczyk, S. (2016). Simple models for rope substructure mechanics: Application to electro-mechanical lifts. 1-9. Paper presented at 5th Symposium on the Mechanics of Slender Structures (MoSS2015)), Northampton, United Kingdom. https://doi.org/10.1088/1742-6596/721/1/012008
Herrera, Ignacio ; Kaczmarczyk, Stefan. / Simple models for rope substructure mechanics: Application to electro-mechanical lifts. Paper presented at 5th Symposium on the Mechanics of Slender Structures (MoSS2015)), Northampton, United Kingdom.9 p.
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abstract = "Mechanical systems modelled as rigid mass elements connected by tensioned slender structural members such as ropes and cables represent quite common substructures used in lift engineering and hoisting applications. Special interest is devoted by engineers and researchers to the vibratory response of such systems for optimum performance and durability. This paper presents simplified models that can be employed to determine the natural frequencies of systems having substructures of two rigid masses constrained by tensioned rope/cable elements. The exact solution for free un-damped longitudinal displacement response is discussed in the context of simple two-degree-of-freedom models. The results are compared and the influence of characteristics parameters such as the ratio of the average mass of the two rigid masses with respect to the rope mass and the deviation ratio of the two rigid masses with respect to the average mass is analyzed. This analysis gives criteria for the application of such simplified models in complex elevator and hoisting system configurations.",
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Herrera, I & Kaczmarczyk, S 2016, 'Simple models for rope substructure mechanics: Application to electro-mechanical lifts' Paper presented at 5th Symposium on the Mechanics of Slender Structures (MoSS2015)), Northampton, United Kingdom, 21/09/15 - 22/09/15, pp. 1-9. https://doi.org/10.1088/1742-6596/721/1/012008

Simple models for rope substructure mechanics: Application to electro-mechanical lifts. / Herrera, Ignacio; Kaczmarczyk, Stefan.

2016. 1-9 Paper presented at 5th Symposium on the Mechanics of Slender Structures (MoSS2015)), Northampton, United Kingdom.

Research output: Contribution to conference typesPaper

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T1 - Simple models for rope substructure mechanics: Application to electro-mechanical lifts

AU - Herrera, Ignacio

AU - Kaczmarczyk, Stefan

PY - 2016/6/2

Y1 - 2016/6/2

N2 - Mechanical systems modelled as rigid mass elements connected by tensioned slender structural members such as ropes and cables represent quite common substructures used in lift engineering and hoisting applications. Special interest is devoted by engineers and researchers to the vibratory response of such systems for optimum performance and durability. This paper presents simplified models that can be employed to determine the natural frequencies of systems having substructures of two rigid masses constrained by tensioned rope/cable elements. The exact solution for free un-damped longitudinal displacement response is discussed in the context of simple two-degree-of-freedom models. The results are compared and the influence of characteristics parameters such as the ratio of the average mass of the two rigid masses with respect to the rope mass and the deviation ratio of the two rigid masses with respect to the average mass is analyzed. This analysis gives criteria for the application of such simplified models in complex elevator and hoisting system configurations.

AB - Mechanical systems modelled as rigid mass elements connected by tensioned slender structural members such as ropes and cables represent quite common substructures used in lift engineering and hoisting applications. Special interest is devoted by engineers and researchers to the vibratory response of such systems for optimum performance and durability. This paper presents simplified models that can be employed to determine the natural frequencies of systems having substructures of two rigid masses constrained by tensioned rope/cable elements. The exact solution for free un-damped longitudinal displacement response is discussed in the context of simple two-degree-of-freedom models. The results are compared and the influence of characteristics parameters such as the ratio of the average mass of the two rigid masses with respect to the rope mass and the deviation ratio of the two rigid masses with respect to the average mass is analyzed. This analysis gives criteria for the application of such simplified models in complex elevator and hoisting system configurations.

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KW - mechanics

KW - rope substructure mechanics

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DO - 10.1088/1742-6596/721/1/012008

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Herrera I, Kaczmarczyk S. Simple models for rope substructure mechanics: Application to electro-mechanical lifts. 2016. Paper presented at 5th Symposium on the Mechanics of Slender Structures (MoSS2015)), Northampton, United Kingdom. https://doi.org/10.1088/1742-6596/721/1/012008