The dynamics of vertical transportation systems in deep underground and high-rise applications

Kaczmarczyk, S. (2017) The dynamics of vertical transportation systems in deep underground and high-rise applications. Invited Presentation presented to: Engineering Research Seminar Series, University of Kwazulu-Natal, Durban, South Africa, 22 August 2017.

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Item Type:	Conference or Workshop Item (Invited Presentation)
Abstract:	High speed and high capacity lifting installations move heavy payloads and passengers to / from depths in excess of 3000 m and service buildings of nearly 1000 m tall. This lecture will describe how the principles and methods of applied mechanics are used to solve practical engineering problems in the modern vertical transportation (VT) technologies, from material handling problems in deep underground mines to lift engineering projects in high-rise applications. In these systems long slender continua (LSC) such as steel wire ropes and composite belts play pivotal roles as suspension means and weight-compensation members. The natural frequencies of VT systems employing LSC are slowly varying, rendering them non-stationary. The dynamic interactions involve exchanges of energy between various modes of vibration. An adverse situation arises when the system is excited near its natural frequency and one of the time varying frequencies of the system approaches the frequency of the excitation. In this context the lecture will demonstrate how the prediction of dynamic behaviour of vertical transportation systems is essential for developing vibration suppression and control strategies to minimize the effects of adverse dynamic responses so that the installation will operate without compromising the structural integrity and safety standards. The lecture will also highlight future research directions in this area of engineering.
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ1370 Elevators T Technology > TJ Mechanical engineering and machinery > TJ170 Mechanics applied to machinery. Dynamics
Creators:	Kaczmarczyk, Stefan
Faculties, Divisions and Institutes:	Faculties > Faculty of Arts, Science & Technology > Engineering
Date:	22 August 2017
Date Type:	Publication
Event Title:	Engineering Research Seminar Series
Event Dates:	22 August 2017
Event Location:	University of Kwazulu-Natal, Durban, South Africa
Event Type:	Other
Language:	English
Status:	Published / Disseminated
Related URLs:	Organisation
URI:	http://nectar.northampton.ac.uk/id/eprint/9925

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