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Equivalent Dynamic Model of Large-Span Flexible Truss Beam Structure

  • Yanshan University
  • Harbin Institute of Technology
  • Tianjin Aerospace Electromechanical Equipment Research Institute

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The complex structural dynamics model of large-span truss beam structures and the flexibility issues brought about by large spans make the analysis of system dynamics and vibration control relatively challenging. The establishment of an equivalent dynamic model is a key technology for conducting semi-physical simulation experiment platform system dynamic model analysis. A large-span flexible truss beam structure is designed from three aspects: the cross-sectional shape, cross-sectional uniformity, and cross-sectional connecting rods. For the large-span flexible truss girder structure, based on the principle of energy equivalence, the relationship between the kinetic energy and strain energy of periodic structures and the kinetic energy and strain energy of the equivalent continuous beam is established. The equivalent mass and stiffness matrices are solved based on the principle of equivalence between strain energy and kinetic energy and the theory of continuum mechanics to establish the equivalent dynamic model. The correctness of the theoretical model was verified through theoretical analysis of natural vibration frequencies and modes, and compared with finite element simulation results.

Original languageEnglish
Title of host publicationAdvances in Mechanism and Machine Science and Engineering in China - Proceedings of IFToMM CCMMS 2024
EditorsYan Chen, Lujiang Liu, Xinjun Liu, Haitao Liu, Ming Li, Tao Sun
PublisherSpringer Science and Business Media Deutschland GmbH
Pages345-361
Number of pages17
ISBN (Print)9789819614660
DOIs
StatePublished - 2025
Event24th IFToMM China International Conference on Mechanism and Machine Science and Engineering, IFToMM CCMMS 2024 - Tianjin, China
Duration: 12 Aug 202414 Aug 2024

Publication series

NameLecture Notes in Mechanical Engineering
ISSN (Print)2195-4356
ISSN (Electronic)2195-4364

Conference

Conference24th IFToMM China International Conference on Mechanism and Machine Science and Engineering, IFToMM CCMMS 2024
Country/TerritoryChina
CityTianjin
Period12/08/2414/08/24

Keywords

  • Dynamic model
  • Equivalent beam
  • Vibration analysis

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