Original title: Modal analysis of tall slender structures using software GMAST
Authors: Hračov, Stanislav ; Pospíšil, Stanislav ; Brůna, Tomáš
Document type: Papers
Conference/Event: Engineering Mechanics 2013 /19./, Svratka (CZ), 2013-05-13 / 2013-05-16
Year: 2013
Language: eng
Abstract: The paper is concerned with a verification of modal properties of tall slender structures computed by recently developed software GMAST. Software GMAST determines eigen-frequencies, eigen-modes and corresponding modal quantities of stacks, towers, guyed masts and similar civil engineering structures using slope-deflection method. A numerical model is based on an idealization of the structure as a continuous 2D beam with continuously distributed parameters on elastic supports. Shaft of structure is divided into sections which could be considered as prismatic i.e. with constant unit mass, bending stiffness and static axial force. The effect of guy ropes is introduced in a form of elastic supports with a frequency dependent stiffness. The applicability of the software in praxis is presented on an example of existing structures, for which the numerically and experimentally identified modal properties are compared.
Keywords: guyed masts; modal analysis; tall slender structures; towers
Project no.: FR-TI3/654 (CEP), GP13-41574P (CEP)
Funding provider: GA MPO, GA ČR
Host item entry: Engineering Mechanics 2013, ISBN 978-80-87012-47-5, ISSN 1805-8256

Institution: Institute of Theoretical and Applied Mechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0223706

Permalink: http://www.nusl.cz/ntk/nusl-156449


The record appears in these collections:
Research > Institutes ASCR > Institute of Theoretical and Applied Mechanics
Conference materials > Papers