A simple method to estimate elastic follow-up factors for transient creep parameter C (t) under secondary stress

Jinho Je, Kukhee Lee, Yun-Jae Kim, Dongwook Jerng

Research output: Contribution to journalReview article

3 Citations (Scopus)

Abstract

In this article, a semi-analytical method to estimate elastic follow-up factor as input to estimate the transient creep C(t) parameter under secondary loading is presented and validated against finite element results for a cracked two-bar structure under constant displacement loading. Predicted values of C(t) agree well with the finite element results for both elastic-creep cases and for elastic-plastic cases with the same creep and plastic hardening exponents. For elastic-plastic-creep cases with different creep and plastic hardening exponents, the proposed method gives good predictions at long time but can under- or over-predict C(t) at short time.

Original languageEnglish
Pages (from-to)336-346
Number of pages11
JournalJournal of Strain Analysis for Engineering Design
Volume51
Issue number5
DOIs
Publication statusPublished - 2016 Jul 1

Fingerprint

Creep
Plastics
Estimate
Hardening
Exponent
Finite Element
Semi-analytical Method
Predict
Prediction

Keywords

  • C (t) integral
  • Crack
  • elastic follow-up
  • secondary stress
  • transient creep

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Applied Mathematics
  • Modelling and Simulation

Cite this

A simple method to estimate elastic follow-up factors for transient creep parameter C (t) under secondary stress. / Je, Jinho; Lee, Kukhee; Kim, Yun-Jae; Jerng, Dongwook.

In: Journal of Strain Analysis for Engineering Design, Vol. 51, No. 5, 01.07.2016, p. 336-346.

Research output: Contribution to journalReview article

@article{073b5f87733f4d50a56c83d677ccf3dd,
title = "A simple method to estimate elastic follow-up factors for transient creep parameter C (t) under secondary stress",
abstract = "In this article, a semi-analytical method to estimate elastic follow-up factor as input to estimate the transient creep C(t) parameter under secondary loading is presented and validated against finite element results for a cracked two-bar structure under constant displacement loading. Predicted values of C(t) agree well with the finite element results for both elastic-creep cases and for elastic-plastic cases with the same creep and plastic hardening exponents. For elastic-plastic-creep cases with different creep and plastic hardening exponents, the proposed method gives good predictions at long time but can under- or over-predict C(t) at short time.",
keywords = "C (t) integral, Crack, elastic follow-up, secondary stress, transient creep",
author = "Jinho Je and Kukhee Lee and Yun-Jae Kim and Dongwook Jerng",
year = "2016",
month = "7",
day = "1",
doi = "10.1177/0309324716643194",
language = "English",
volume = "51",
pages = "336--346",
journal = "Journal of Strain Analysis for Engineering Design",
issn = "0309-3247",
publisher = "SAGE Publications Ltd",
number = "5",

}

TY - JOUR

T1 - A simple method to estimate elastic follow-up factors for transient creep parameter C (t) under secondary stress

AU - Je, Jinho

AU - Lee, Kukhee

AU - Kim, Yun-Jae

AU - Jerng, Dongwook

PY - 2016/7/1

Y1 - 2016/7/1

N2 - In this article, a semi-analytical method to estimate elastic follow-up factor as input to estimate the transient creep C(t) parameter under secondary loading is presented and validated against finite element results for a cracked two-bar structure under constant displacement loading. Predicted values of C(t) agree well with the finite element results for both elastic-creep cases and for elastic-plastic cases with the same creep and plastic hardening exponents. For elastic-plastic-creep cases with different creep and plastic hardening exponents, the proposed method gives good predictions at long time but can under- or over-predict C(t) at short time.

AB - In this article, a semi-analytical method to estimate elastic follow-up factor as input to estimate the transient creep C(t) parameter under secondary loading is presented and validated against finite element results for a cracked two-bar structure under constant displacement loading. Predicted values of C(t) agree well with the finite element results for both elastic-creep cases and for elastic-plastic cases with the same creep and plastic hardening exponents. For elastic-plastic-creep cases with different creep and plastic hardening exponents, the proposed method gives good predictions at long time but can under- or over-predict C(t) at short time.

KW - C (t) integral

KW - Crack

KW - elastic follow-up

KW - secondary stress

KW - transient creep

UR - http://www.scopus.com/inward/record.url?scp=84974851104&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84974851104&partnerID=8YFLogxK

U2 - 10.1177/0309324716643194

DO - 10.1177/0309324716643194

M3 - Review article

VL - 51

SP - 336

EP - 346

JO - Journal of Strain Analysis for Engineering Design

JF - Journal of Strain Analysis for Engineering Design

SN - 0309-3247

IS - 5

ER -