A Study on an Elastoplastic Damper Utilizing Continuous Plastic Bending of Metal Rods (In the Cases of an Improved Damper and a Compound Damper)

Kenichiro Ohmata, Toshiharu Arakawa, Takaya Taniguchi

Research output: Contribution to journalArticle


In the previous paper, an elastoplastic damper utilizing continuous plastic bending of thin metal rods was developed. In this paper, an improved damper that is improved a winding mechanism of the metal rods of the elastoplastic damper for a larger resisting force and a compound damper that is added a friction mechanism as a fale-safe mechanism to the elastoplastic damper are proposed. The trial dampers were made and the resisting force characteristics and fatigue strength of the dampers were measured. The seismic responses of an L-shaped pipe supported by the dampers were also measured using an electrohydraulic shaking table.

Original languageEnglish
Pages (from-to)1549-1554
Number of pages6
JournalNihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
Issue number621
Publication statusPublished - 1 Jan 1998



  • Compound Damper
  • Coulomb Friction
  • Elastoplastic Damper
  • Metal Rod
  • Piping
  • Seismic Response

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