Cyclic J integral using linear matching method

Weihang Chen; Haofeng Chen

Cyclic J integral using linear matching method

Mechanical And Aerospace Engineering

Research output: Contribution to conference › Paper

Abstract

The extended version of the latest Linear Matching Method (LMM) has the capability to evaluate the stable cyclic response, which produces cyclic stresses, residual stresses and plastic strain ranges for the low cycle fatigue assessment with cyclic load history. The objective of this study is to calculate ΔJ through the LMM and suggest future development directions. The derivation of the ΔJ based on the potential energy expression for a single edge cracked plate subjected to cyclic uniaxial loading condition using LMM is presented. To extend the analysis so that it can be incorporated to other plasticity models, material Ramberg-Osgood hardening constants are also adopted. The results of the proposed model have been compared to the ones obtained from Reference Stress Method (RSM) for a single edge cracked plate and they indicate that the estimates provide a relatively easy method for estimating ΔJ for describing the crack growth rate behaviour by considering the complete accumulated cycle effects.

Language	English
Number of pages	14
Publication status	Published - 20 May 2012
Event	13th International Conference on Pressure Vessel Technology - London, United Kingdom Duration: 20 May 2012 → 23 May 2012

Conference

Conference	13th International Conference on Pressure Vessel Technology
Country	United Kingdom
City	London
Period	20/05/12 → 23/05/12

Fingerprint

Cyclic loads

Potential energy

Plasticity

Hardening

Crack propagation

Residual stresses

Plastic deformation

Fatigue of materials

Direction compound

Keywords

Cyclic J Integral
linear matching method
single edge cracked plate

Cite this

Chen, W., & Chen, H. (2012). Cyclic J integral using linear matching method. Paper presented at 13th International Conference on Pressure Vessel Technology, London, United Kingdom.

Chen, Weihang ; Chen, Haofeng. / Cyclic J integral using linear matching method. Paper presented at 13th International Conference on Pressure Vessel Technology, London, United Kingdom.14 p.

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title = "Cyclic J integral using linear matching method",

abstract = "The extended version of the latest Linear Matching Method (LMM) has the capability to evaluate the stable cyclic response, which produces cyclic stresses, residual stresses and plastic strain ranges for the low cycle fatigue assessment with cyclic load history. The objective of this study is to calculate ΔJ through the LMM and suggest future development directions. The derivation of the ΔJ based on the potential energy expression for a single edge cracked plate subjected to cyclic uniaxial loading condition using LMM is presented. To extend the analysis so that it can be incorporated to other plasticity models, material Ramberg-Osgood hardening constants are also adopted. The results of the proposed model have been compared to the ones obtained from Reference Stress Method (RSM) for a single edge cracked plate and they indicate that the estimates provide a relatively easy method for estimating ΔJ for describing the crack growth rate behaviour by considering the complete accumulated cycle effects.",

keywords = "Cyclic J Integral, linear matching method, single edge cracked plate",

author = "Weihang Chen and Haofeng Chen",

year = "2012",

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note = "13th International Conference on Pressure Vessel Technology ; Conference date: 20-05-2012 Through 23-05-2012",

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Chen, W & Chen, H 2012, 'Cyclic J integral using linear matching method' Paper presented at 13th International Conference on Pressure Vessel Technology, London, United Kingdom, 20/05/12 - 23/05/12, .

Cyclic J integral using linear matching method. / Chen, Weihang; Chen, Haofeng.

2012. Paper presented at 13th International Conference on Pressure Vessel Technology, London, United Kingdom.

Research output: Contribution to conference › Paper

TY - CONF

T1 - Cyclic J integral using linear matching method

AU - Chen, Weihang

AU - Chen, Haofeng

PY - 2012/5/20

Y1 - 2012/5/20

N2 - The extended version of the latest Linear Matching Method (LMM) has the capability to evaluate the stable cyclic response, which produces cyclic stresses, residual stresses and plastic strain ranges for the low cycle fatigue assessment with cyclic load history. The objective of this study is to calculate ΔJ through the LMM and suggest future development directions. The derivation of the ΔJ based on the potential energy expression for a single edge cracked plate subjected to cyclic uniaxial loading condition using LMM is presented. To extend the analysis so that it can be incorporated to other plasticity models, material Ramberg-Osgood hardening constants are also adopted. The results of the proposed model have been compared to the ones obtained from Reference Stress Method (RSM) for a single edge cracked plate and they indicate that the estimates provide a relatively easy method for estimating ΔJ for describing the crack growth rate behaviour by considering the complete accumulated cycle effects.

AB - The extended version of the latest Linear Matching Method (LMM) has the capability to evaluate the stable cyclic response, which produces cyclic stresses, residual stresses and plastic strain ranges for the low cycle fatigue assessment with cyclic load history. The objective of this study is to calculate ΔJ through the LMM and suggest future development directions. The derivation of the ΔJ based on the potential energy expression for a single edge cracked plate subjected to cyclic uniaxial loading condition using LMM is presented. To extend the analysis so that it can be incorporated to other plasticity models, material Ramberg-Osgood hardening constants are also adopted. The results of the proposed model have been compared to the ones obtained from Reference Stress Method (RSM) for a single edge cracked plate and they indicate that the estimates provide a relatively easy method for estimating ΔJ for describing the crack growth rate behaviour by considering the complete accumulated cycle effects.

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KW - linear matching method

KW - single edge cracked plate

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Chen W, Chen H. Cyclic J integral using linear matching method. 2012. Paper presented at 13th International Conference on Pressure Vessel Technology, London, United Kingdom.