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Seismic Qualification of Piping System by Detailed Inelastic Response Analysis: Part 2 — A Guideline for Piping Seismic Inelastic Response Analysis

[+] Author Affiliations
Akihito Otani

IHI Corporation, Yokohama, Japan

Tadahiro Shibutani, Masaki Shiratori

Yokohama National University, Yokohama, Japan

Masaki Morishita, Tomoyoshi Watakabe

Japan Atomic Energy Agency, Oarai, Japan

Izumi Nakamura

National Research Institute for Earth Science and Disaster Resilience, Tsukuba, Japan

Paper No. PVP2017-65190, pp. V008T08A002; 10 pages
  • ASME 2017 Pressure Vessels and Piping Conference
  • Volume 8: Seismic Engineering
  • Waikoloa, Hawaii, USA, July 16–20, 2017
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 978-0-7918-5803-5
  • Copyright © 2017 by ASME


A Code Case in the framework of JSME Nuclear Codes and Standards is currently being developed to incorporate seismic design evaluation of piping by detailed elastic-plastic response analysis and strain-based fatigue criteria as an alternative design rule to the current rule, in order to provide a more rational seismic design evaluation. The Code Case provides two strain-based criteria; one is a limit to maximum amplitude of equivalent strain amplitude derived from detailed analysis and the other is a limit to the fatigue usage factor also based on the equivalent strain amplitude.

A guideline for piping seismic analysis based on inelastic response analysis is also being developed as a mandatory appendix for the code case. The guideline provides the methodology to obtain the elastic and plastic strains in seismic response and contains descriptions for analysis code, FE modeling including material property definition, time history analysis method, damping, seismic input condition and verification and validation method. This paper introduces the outlines of them.

Copyright © 2017 by ASME
Topics: Pipes , Piping systems



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