VARIABLE-ORDER FRACTIONAL CREEP MODEL OF MUDSTONE UNDER HIGH-TEMPERATURE

被引：7
|
作者：
Li, Ming [1 ]
Pu, Hai [1 ,2 ]
Cao, Lili [1 ]
机构：
[1] China Univ Min & Technol, State Key Lab Geomech & Deep Underground Engn, Xuzhou, Peoples R China
[2] China Univ Min & Technol, Sch Mech & Civil Engn, Xuzhou, Peoples R China
来源：
THERMAL SCIENCE | 2017年 / 21卷
关键词：
high temperature; variable-order; creep model; mudstone; VISCOELASTICITY; DIFFUSION; MECHANICS; OPERATORS; CALCULUS;
D O I：
10.2298/TSCI17S1343L
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In order to study the properties of high-temperature creep for mudstone, MTS810 electro-hydraulic servo material test system and MTS652.02 high temperature furnace are utilized for the creep test of mudstone at 700 degrees C. Considering the visco-elastic-plastic characteristics and the damage effect, the variable-order fractional creep model is established to research the creep character, and it is found that the proposed model can be well fitting of our experimental results. Especially, variable-order function can be used to analyze and study the viscoelastic property evolution of mudstone in process of high-temperature creep. Compositions of mud stone are distinguished by X-ray diffraction technology. The presence of the illite under high temperatures can be used for explaining the viscous feature prevails over the elastic ones in viscoelastic properties.
引用
收藏
页码：S343 / S349
页数：7
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