An effective continuum damage mechanics model for creep–fatigue life assessment of a steam turbine rotor

Jing, Jianping; Meng, Guang; Sun, Yi; Xia, Sheng-Yuan

doi:10.1016/s0308-0161(03)00070-x

Cited by 62 publications

(24 citation statements)

References 6 publications

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“…At present, the interaction of creep fatigue life prediction of life -time fractional [1] , frequency correction method [2] , the strain range partitioning method [3] , strain energy partitioning method [4] , ductility loss method [5] , damage mechanics method [6] , etc.. Most of the above methods separate the creep and fatigue, and calculate the fatigue life and creep life respectively, without considering the interaction of fatigue and creep.…”

Section: Introductionmentioning

confidence: 99%

Prediction of component life based by damage mechanics-effective stress method on ANSYS

Tan¹,

Ding²

2018

Proceedings of the 4th Annual International Conference on Material Engineering and Application (ICMEA 2017)

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Abstract-The damage mechanics-effective stress method are used to predict the life of the structure under the interaction of creep and fatigue. The effective stress method is used to calculate the stress field of the component, and the repeated modification of the stiffness matrix is avoided, and the calculation efficiency is improved. The closed effect of compression is taken into account when calculating the equivalent stress of damage. Using APDL, the two development tool of ANSYS, to compile the program, combining the life prediction method based on damage mechanics with the structural analysis of ANSYS, the damage calculation and life prediction of components are realized. The FGH95 specimens of high temperature nickel based powder metallurgy materials were calculated and compared with the experimental results, which proved the feasibility of this method. At the same time, it is verified that creep damage is the main factor under high temperature and low cycle fatigue cycle.

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Section: Introductionmentioning

confidence: 99%

Prediction of component life based by damage mechanics-effective stress method on ANSYS

Tan¹,

Ding²

2018

Proceedings of the 4th Annual International Conference on Material Engineering and Application (ICMEA 2017)

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“…Considerable studies devoted to creep-fatigue interaction of power plant component materials in the past have already been carried out [1][2][3][4][5]. Fracture mechanics approaches have been previously used to characterize creepfatigue crack growth rate in creep-ductile power plant materials.…”

Section: Introductionmentioning

confidence: 99%

A creep stress intensity factor approach to creep–fatigue crack growth

Shlyannikov

Tumanov

Boychenko

2015

Engineering Fracture Mechanics

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“…Issue of turbine life management has attracted the attention of many scholars. Jing et al [1][2] [3] proposed a method based on continuum damage model to assess the low cycle fatigue damage and creep damage on turbine rotor. This method determines the model parameters via model comparison, and it considers the effect of complex multi-axial stress.…”

Section: Introductionmentioning

confidence: 99%

Low cycle fatigue damage prediction of steam turbine rotor based on dynamic PLS

Sun

2014

Proceedings of the 33rd Chinese Control Conference

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This paper establishes the prediction model of low cycle fatigue damage of steam turbine rotor using the rich data from finite element analysis. In order to monitor the damage, a multiple regression analysis of input data/output data with high correlation is made via dynamic PLS. The variation of the process parameters is extracted and it restrains the multiple dependency of the several parameters in different time series. Finally, a simulation of rolling process of a domestic 300MW turbine unit validates the effectiveness and accuracy of the prediction model based on dynamic PLS.

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An effective continuum damage mechanics model for creep–fatigue life assessment of a steam turbine rotor

Cited by 62 publications

References 6 publications

Prediction of component life based by damage mechanics-effective stress method on ANSYS

Prediction of component life based by damage mechanics-effective stress method on ANSYS

A creep stress intensity factor approach to creep–fatigue crack growth

Low cycle fatigue damage prediction of steam turbine rotor based on dynamic PLS

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