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Date of Publication:2013-01-01

Journal:水力发电学报

Issue:3

Page Number:241-246

ISSN No.:1003-1243

Abstract:To model vertical vibrations caused by hydraulic vibration sources, this study introduced into the models a head cover subsystem that is a major path for vibrations to transfer from the sources to the fixed structures. This paper analyzes the transfer paths in such a turbine system by applying the basic vibration theory, general probability perturbation, Kronecker algebra, and matrix differential theory. Theoretical analysis and numerical simulations were made to consider uncertain factors in transfer paths, such as mass, damping and stiffness and to examine the transfer paths efficiency and its variance in frequency domain. Thus, this study provides an overall analysis and an efficient solution to vertical vibration transfer paths in hydropower station. ? Copyright.

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