Dynamic stability analysis of ropeways systems : dynamical behavior of moving load in interaction with sheaves assembly in ropeway systems

Abstract

Stabilizing rope driven dynamical systems in passenger transfer has a significant impact on this expanding industry segment nowadays. Cable liners and ropeway systems are used increasingly in different areas of passenger transfer, not just in touristic areas but also in urban traffics because it is sustainable, green and in long term economical. This thesis takes a closer look to implementable solutions for making the rope driven systems more reliable which is done with considering main influential factors on vibrations, contact mechanics and instability of multibody systems of this kind. The purpose of this research is to find a mathematical-mechanical model that represents the real physical facility which is used to study the effects of variable system parameters on the vibrational behavior of the ropeways. Different analytical and numerical methods and also merged solutions are used to approach this goal. It’s necessary to have a verified model of the ropeway system because many experiments on a real system are not possible or can have destructive effects on system components. Also by starting new projects and feasibility studies, this kind of simulated models can be used by defining the constant system parameters and also optimizing the variable to find an optimum point that satisfies main requirements by focusing on driving comfort and also reducing the cost of new facilities. Despite the thesis mainly focuses on ropeway design criteria to reduce cost and optimize the system, but the developed methods in each step to generate a comprehensive system, can be adapted and used in other related fields of rope driven system and also railway industry. In conclusion the thesis delivers a model of ropeway with main significant system parameters and with help of design of experiments (DOE) that leads to Ishikawa analysis, allows to examine the system in feasibility phase to continuously optimize the facility in aspects of costs and driving comfort.