Applying Research on Creep Constitutive Model of LC4 Aluminium Alloy Based on BC-RBFNN

A damage-based creep constitutive model for a wide stress range is applied to the creep analysis of a 1000 MW ultra-supercritical steam turbine, the inlet steam of which reaches 600°C and 35 MPa. In this model, the effect of complex multi-axial stress and the nonlinear evolution of damage are considered. To this end, the model was implemented into the commercial software ABAQUS using a user-defined material subroutine code. The temperature dependent material constants were identified from the experimental data of advanced heat resistant steels using curve fitting approaches. A comparison of the simulated and the measured results showed that they reached an acceptable agreement. The results of the creep analysis illustrated that the proposed approach explains the basic features of stress redistribution and the damage evolution in the steam turbine rotor over a wide range of stresses and temperatures.

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Creep mechanism and creep constitutive model of aluminum silicate short-fiber-reinforced magnesium matrix composite

Transactions of Nonferrous Metals Society of China ◽

10.1016/s1003-6326(14)63105-8 ◽

2014 ◽

Vol 24 (3) ◽

pp. 632-640 ◽

Cited By ~ 13

Author(s):

Jun TIAN ◽

Zi-qiong SHI

Keyword(s):

Constitutive Model ◽

Matrix Composite ◽

Short Fiber ◽

Creep Mechanism ◽

Aluminum Silicate ◽

Fiber Reinforced ◽

Magnesium Matrix Composite ◽

Magnesium Matrix ◽

Creep Constitutive Model

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Creep Constitutive Model for Frozen Soils Based on Hardening and Damage Effects

KSCE Journal of Civil Engineering ◽

10.1007/s12205-020-1681-y ◽

2020 ◽

Vol 24 (4) ◽

pp. 1146-1158

Author(s):

Sheng Shi ◽

Feng Zhang ◽

Decheng Feng ◽

Kangwei Tang

Keyword(s):

Constitutive Model ◽

Frozen Soils ◽

Creep Constitutive Model

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Study on mechanical properties and constitutive model of 5052 aluminium alloy

Materials Science and Technology ◽

10.1080/02670836.2019.1596611 ◽

2019 ◽

Vol 35 (8) ◽

pp. 916-924 ◽

Cited By ~ 1

Author(s):

Ping Song ◽

Wenbin Li ◽

Xiaoming Wang ◽

Wenxu Xu

Keyword(s):

Mechanical Properties ◽

Constitutive Model ◽

Aluminium Alloy

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Studies about the Drained Creep Characteristic of Silt Soil on k0 Consolidation

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.941-944.2631 ◽

2014 ◽

Vol 941-944 ◽

pp. 2631-2635 ◽

Cited By ~ 1

Author(s):

Yan Fang Wang ◽

Zhi Gang Zhou ◽

Zheng Yin Cai

Keyword(s):

Plastic Strain ◽

Constitutive Model ◽

Creep Strain ◽

Creep Test ◽

Empirical Formula ◽

Axial Loading ◽

Soil Creep ◽

Time Extension ◽

Creep Characteristic ◽

Creep Constitutive Model

The creep characteristic of saturated silt soil was studied by k0 consolidation creep test through two stress paths of axial loading and lateral lightening. According to test datas, some conclusions were submitted. First, the axial creep laws between the two stress paths were consistent on drainage conditions. Volume strains were much smaller than Axial strains. Volume strains presented alternation characteristic between shear shrinkage and shear dilatancy along with time extension. The silt soil creep constitutive model was presented. The results suggested combining the NHRI model describing the transient elastic-plastic strain with the creep empirical formula describing creep strain to establish the creep constitutive model.

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