Abstract
This paper estimates the time-dependent crack-tip stress fields under elastic-plastic-creep conditions. We perform Finite-Element (FE) transient creep analyses for a Single-Edge-notched-Bend (SEB) specimen. We investigate the effect of the initial plasticity on the transient creep by systematically varying the magnitude of the initial step-load. We consider both the same stress exponent and different stress exponent in the power-law creep and plasticity to determine the elastic-plastic-creep behaviour. To estimation of the crack-tip stress fields, we compare FE analysis results with those obtained numerically formulas. In addition, we propose a new equation to predict the crack-tip stress fields when the creep exponent is different from the plastic exponent.
| Original language | English |
|---|---|
| Pages (from-to) | 1001-1010 |
| Number of pages | 10 |
| Journal | Transactions of the Korean Society of Mechanical Engineers, A |
| Volume | 39 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 2015 Oct |
Bibliographical note
Publisher Copyright:© 2015 The Korean Society of Mechanical Engineers.
Keywords
- Crack-Tip Stress Fields
- Elastic-Plastic-Creep
- FE Analysis
- SEB Specimen
- Transient Creep
ASJC Scopus subject areas
- Mechanical Engineering