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

Tianbai Li, Haofeng Chen, Weihang Chen, James Michael Ure

Research output: Contribution to conferencePaper

Abstract

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.

Conference

ConferenceASME Pressure Vessels and Piping Conference
CountryUnited States
CityBaltimore, Maryland,
Period17/07/1121/07/11

Fingerprint

Ratchet
Crack
Welds
Pipe
Cracks
Yield Stress
Metals
Load limits
Yield stress
Limit Analysis
Temperature
Influence Function
Range of data
Internal
Geometry

Keywords

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

Cite this

Li, T., Chen, H., Chen, W., & Ure, J. M. (2011). 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.
Li, Tianbai ; Chen, Haofeng ; Chen, Weihang ; Ure, James Michael. / 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.
@conference{76c49fc6632a42f59149e88653801b7b,
title = "Ratchet limits for a crack in a welded pipe subjected to a cyclic temperature load an a constant mechanical load",
abstract = "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.",
keywords = "crack, ratchet limit, limit load, welded pipe, maximum temperature range",
author = "Tianbai Li and Haofeng Chen and Weihang Chen and Ure, {James Michael}",
note = "Proceedings Published as a CD-ROM/DVD; ASME Pressure Vessels and Piping Conference ; Conference date: 17-07-2011 Through 21-07-2011",
year = "2011",
month = "7",
day = "17",
language = "English",

}

Li, T, Chen, H, Chen, W & Ure, JM 2011, '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, 17/07/11 - 21/07/11, .

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.

2011. Paper presented at ASME Pressure Vessels and Piping Conference, Baltimore, Maryland, United States.

Research output: Contribution to conferencePaper

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 -

Li T, Chen H, Chen W, Ure JM. Ratchet limits for a crack in a welded pipe subjected to a cyclic temperature load an a constant mechanical load. 2011. Paper presented at ASME Pressure Vessels and Piping Conference, Baltimore, Maryland, United States.