Dynamic phenomena such as transient and steady-state resonant vibrations in vertical transportation systems deployed to move goods and passengers in the modern built environment affect the performance of the entire installation. In extreme high rise structures traction drive elevator systems comprise long slen-der continua such as ropes and cables with discrete mass elements that exhibit low-frequency modes and nonlinear modal interactions. This results in the need to predict and control their non-linear stationary and non-stationary dynamic responses. The underlying causes of these dynamic responses / vibrations are varied. They include low frequency sway motions of the host structure induced by high winds and seismic activities. Consequently, conditions for external, par-ametric and autoparametric resonances can readily arise during the operation of such installations. In this context, a general approach to model the dynamic be-haviour of a typical vertical transportation system is demonstrated. Subsequent-ly, a mathematical model is developed which is solved numerically to predict the non-stationary / nonlinear dynamic responses. An active control strategy is then proposed to minimize the effects of adverse dynamic responses of the system.
|Title of host publication||Nonlinear Dynamics of Discrete and Continuous Systems|
|Editors||Andrei Abramyan, Igor Andrianov, Valery Gaiko|
|Place of Publication||Switzerland|
|Number of pages||12|
|Publication status||E-pub ahead of print - 3 Nov 2020|
|Name|| Advanced Structured Materials|
|Publisher||Springer Nature Switzerland AG|
Expected to be published 12 Jan 2021.
- Dynamic interactions
- Long slender continua
- Discrete Inertial components
- Vertical transportation systems