Inelastic analysis of circular dampers under in-plane loading

Yen-Po Wang, Chien Liang Lee, Shih Chiao Huang, Min Che Tu

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

Abstract

In this paper, a methodology to determine the energy-dissipative characteristics of circular dampers under cyclic in-plane loading is proposed based on the inelastic stress analysis of curved beams with bending and shear coupling. Taking advantages of symmetry, a quarter of the circular damper in form of a curved cantilever beam with shear and bending applied simultaneously to the free end is considered in the analysis. The yield load, the corresponding yield displacement, and consequently the initial stiffness of the damper can be found analytically using the classical theory of elasticity in polar coordinate. The inelastic force-displacement relationship of the curved beam under monotonically increasing (or decreasing) load is obtained by performing the inelastic stress analysis numerically in an incremental manner. The force-displacement relationship so determined is conceived as the skeleton or backbone curve from which the hysteretic loops of the damper can be reconstructed by adopting Masing's rule. This hysteresis characterizes the mechanical behaviour of the circular damper with information of initial stiffness, yield strength, post-yielding stiffness, ductility and energy-dissipative capacity at a specified deformation. The proposed methodology may serve as an effective tool in the preliminary design stage of in-plane type metallic yielding damper to meet the desired specifications before fabrication for component test and practical use.

Original languageEnglish
Title of host publicationProceedings of the 2nd World Congress on Civil, Structural, and Environmental Engineering, CSEE 2017
PublisherAvestia Publishing
ISBN (Print)9781927877296
DOIs
StatePublished - 1 Jan 2017
EventProceedings of the 2nd World Congress on Civil, Structural, and Environmental Engineering, CSEE 2017 - Barcelona, Spain
Duration: 2 Apr 20174 Apr 2017

Publication series

NameWorld Congress on Civil, Structural, and Environmental Engineering
ISSN (Electronic)2371-5294

Conference

ConferenceProceedings of the 2nd World Congress on Civil, Structural, and Environmental Engineering, CSEE 2017
CountrySpain
CityBarcelona
Period2/04/174/04/17

Keywords

  • Boundary-valued problem
  • Curved beam
  • Elasticity
  • Hysteretic loop
  • Inelastic stress analysis
  • Masing's rule
  • Strain-compatibility
  • Total deformation theory

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