### Abstract

Original language | English |
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Publication status | Published - 17 Jul 2011 |

Event | ASME Pressure Vessels and Piping Conference - Baltimore, Maryland, United States Duration: 17 Jul 2011 → 21 Jul 2011 |

### Conference

Conference | ASME Pressure Vessels and Piping Conference |
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Country | United States |

City | Baltimore, Maryland, |

Period | 17/07/11 → 21/07/11 |

### Fingerprint

### Keywords

- crack
- ratchet limit
- limit load
- welded pipe
- maximum temperature range

### Cite this

*Ratchet limits for a crack in a welded pipe subjected to a cyclic temperature load an a constant mechanical load*. Paper presented at ASME Pressure Vessels and Piping Conference, Baltimore, Maryland, United States.

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**Ratchet limits for a crack in a welded pipe subjected to a cyclic temperature load an a constant mechanical load.** / Li, Tianbai; Chen, Haofeng; Chen, Weihang; Ure, James Michael.

Research output: Contribution to conference › Paper

TY - CONF

T1 - Ratchet limits for a crack in a welded pipe subjected to a cyclic temperature load an a constant mechanical load

AU - Li, Tianbai

AU - Chen, Haofeng

AU - Chen, Weihang

AU - Ure, James Michael

N1 - Proceedings Published as a CD-ROM/DVD

PY - 2011/7/17

Y1 - 2011/7/17

N2 - This paper presents the ratchet limit analysis of a pipe with a symmetric crack in a mismatched weld by using the extended Linear Matching Method (LMM). Two loading conditions are considered: i) a cyclic temperature load and a constant internal pressure; and ii) a cyclic temperature load and a constant axial tension. Individual effects of i) the geometry of the Weld Metal (WM), ii) the size of the crack, iii) the location of the crack and iv) the yield stress of WM on the ratchet limits, maximum temperature ranges to avoid ratchetting and limit loads are investigated. Influence functions of the yield stress of WM on the maximum temperature ranges and limit loads are generated. The results confirm the applicability of the extended LMM to the cracked welded pipe.

AB - This paper presents the ratchet limit analysis of a pipe with a symmetric crack in a mismatched weld by using the extended Linear Matching Method (LMM). Two loading conditions are considered: i) a cyclic temperature load and a constant internal pressure; and ii) a cyclic temperature load and a constant axial tension. Individual effects of i) the geometry of the Weld Metal (WM), ii) the size of the crack, iii) the location of the crack and iv) the yield stress of WM on the ratchet limits, maximum temperature ranges to avoid ratchetting and limit loads are investigated. Influence functions of the yield stress of WM on the maximum temperature ranges and limit loads are generated. The results confirm the applicability of the extended LMM to the cracked welded pipe.

KW - crack

KW - ratchet limit

KW - limit load

KW - welded pipe

KW - maximum temperature range

UR - http://www.asmeconferences.org/pvp2011/

M3 - Paper

ER -