An improved viscoplastic constitutive model and its application to creep behavior of turbine blade

Wang, Chan; Shi, Duoqi; Yang, Xiaoguang; Li, Shaolin; Dong, Chaofang

doi:10.1016/j.msea.2017.09.067

Cited by 23 publications

(13 citation statements)

References 26 publications

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“…As reported by Kang and Kan (Kang and Kan, 2007), Yaguchi and Takahashi (Yaguchi et al, 2002), Zhang and Xuan (Zhang and Xuan, 2017), Wang and Shi (Wang et al, 2017a), etc., the introduction of the static recovery term in the kinematic hardening rule can effectively improve the capability of the unified viscoplastic constitutive model. In particular, it can be used to simulate the creepfatigue interaction and the creep/relaxation behavior during a stress or strain hold time for materials under creep-fatigue loadings.…”

Section: Development Of the Kinematic Hardening Rulesupporting

confidence: 56%

Multi-axial creep-fatigue life prediction considering history-dependent damage evolution: A new numerical procedure and experimental validation

Wang

Guo

Chen

et al. 2019

Journal of the Mechanics and Physics of Solids

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In this paper, a new numerical procedure based on a cycle-by-cycle analysis has been constructed for creep-fatigue behavior and life prediction of high-temperature structures under multi-axial stress states. Within this framework, a modified unified viscoplastic constitutive model with isotropic hardening and modified kinematic hardening rules is developed to simulate the cycle-by-cycle stress-strain responses.

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Section: Development Of the Kinematic Hardening Rulesupporting

confidence: 56%

Multi-axial creep-fatigue life prediction considering history-dependent damage evolution: A new numerical procedure and experimental validation

Wang

Guo

Chen

et al. 2019

Journal of the Mechanics and Physics of Solids

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“…The correctness of the finite element (FE) analysis method was verified by comparing the simulation results with the actual manufacturing materials. Wang et al [11] established a constitutive equation, which is essential for predicting the response of materials to thermal deformation. Sun et al [12] studied the isothermal hot compression tests of IN028 alloy at temperatures ranging from 950 to 1050 • C and strain rate ranging from 0.01 to 30 s −1 .…”

Section: Introductionmentioning

confidence: 99%

Predicting the Microstructure of a Valve Head during the Hot Forging of Steel 21-4N

Huang

et al. 2018

Metals

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Abstract:Valve microstructure is important during hot forging. Austenitic 21-4N steel is often used in exhaust valves. In this study, the microstructure evolution of the forging valve process was predicted using the internal state variables (i.e., average grain size, recrystallized fraction, and dislocation density) modus for 21-4N. First, 21-4N was subjected to hot compression tests on a Gleeble-1500D and static grain growth tests in a heating furnace. A set of uniform viscoplastic constitutive equations was established based on experimental data. Next, the determined unified constitutive equations were conducted in DEFORM-3D, and the microstructure evolution of 21-4N during forging was calculated. Finally, the simulation results of grain size evolution were validated via experiments. Results showed good consistency between the simulations and experiments. Thus, the models adequately predicted the microstructure evolution.

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“…An example of such formulation is the Perzyna model, which has been extensively used for viscoplastic simulations, cf. [54,55,56,57,58]. Difficulties might arise using this approach, since time-dependent deformation can occur at low stresses in real components.…”

Section: Modelling Frameworkmentioning

confidence: 99%

Fatigue life prediction of additively manufactured ductile nickel-based superalloys : Constitutive and crack initiation modelling

Lindström

2022

Linköping Studies in Science and Technology. Dissertations

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The first part of the research project, which resulted in the Paper I, Paper II and Paper III, has been funded by the Swedish Energy Agency and Siemens Energy AB (formerly Siemens Industrial Turbomachinery AB) through the research programme Turbines for Future Energy Systems (Turbiner för framtidens energisystem), the support of which is gratefully acknowledged. The remaining part of the project, resulting in Paper IV and Paper V, has been funded by Linköping University and Siemens Energy AB. First and foremost, I would like to thank my main supervisor Associate Prof. Daniel Leidermark for your patience, encouragement and enthusiasm, and for always taking time for discussions, guidance, or anything I have on my mind. Special thanks goes also to Lic. Eng. Daniel Nilsson for all support you have provided me with regarding testing, application near questions, and for making it possible for at least some of our work to be used in "reality". I would also like to thank my research group; Prof. Kjell Simonsson, Dr. Jan-Erik Lundgren and Associate Prof. Robert Eriksson for your valuable input and support through the project.In addition, I would like to thank all Ph.D. colleagues at the Division of Solid Mechanics for, most importantly, making the Ph.D. studies a lot more fun, but also for all valuable discussions. A special thanks goes to my office mate Jordi for all your help, both at office and outside of work.Last, but not least, I would like to thank my girlfriend Ida for all your support. As we started our Ph.D. journeys almost at the same time, it has been invaluable to have someone to discuss things with at any time. However, most importantly, thank you for making my time outside work much more joyful.

show abstract

An improved viscoplastic constitutive model and its application to creep behavior of turbine blade

Cited by 23 publications

References 26 publications

Multi-axial creep-fatigue life prediction considering history-dependent damage evolution: A new numerical procedure and experimental validation

Multi-axial creep-fatigue life prediction considering history-dependent damage evolution: A new numerical procedure and experimental validation

Predicting the Microstructure of a Valve Head during the Hot Forging of Steel 21-4N

Fatigue life prediction of additively manufactured ductile nickel-based superalloys : Constitutive and crack initiation modelling

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