Evaluation of damping mechanism of wood structure based on the energy response

Sungbin Song, Satsuya Soda

Research output: Contribution to journalArticle

Abstract

The purpose of this study is to improve the prediction accuracy of the maximum deformation of the wood structure in time-history response analysis. We propose a method to examine a damping mechanism on the basis of energy response. First, in order to approximate damping energy of wood structure, we derive formulas for VD/VE =f(h)W or f(h,μ)W through the damping factor of wood structure. Equivalent velocity VE is converted from total input energy and equivalent velocity VD, from energy attributable to damage. Next, based on the assumption that the damping force is proportional to the relative velocity, we estimate the viscous damping coefficient by the relation between the relative velocity and damping energy calculated by the approximation formulas. Finally, we estimate the damping coefficient of full-scale wood structure frame by proposed method, confirming the validity of proposed method.

Original languageEnglish
Pages (from-to)825-832
Number of pages8
JournalJournal of Structural and Construction Engineering
Volume78
Issue number686
DOIs
Publication statusPublished - 2013 Apr

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Keywords

  • Damping mechanism
  • Energy response
  • Equivalent velocity
  • Full-scale shaking table test
  • Viscous damping coefficient
  • Wood structure

ASJC Scopus subject areas

  • Building and Construction
  • Architecture

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