Results 81 to 90 of about 13,805,690 (177)

Fractional Derivative Creep Model of Salt Rock

工程科学与技术, 2014
:The creep property of the salt rock is an important determinant of deep underground repository of energy for long-term operation.New fractional derivative creep model was built by using the Abel dashpot and Abel dashpot with strain triggered based on ...
吴斐, 刘建锋, 边宇, 周志威
doaj  

Sub-series 2: Publications

, 2004
Bimonthly magazine discussing topics related to aviation and model airplane engines including collecting, restoring, maintaining, and identifying engines, along with ...
The Model Museum, Dannels, Timothy J.
core   +1 more source

Creep damage constitutive model of rock based on the mechanisms of crack-initiated damage and extended damage

Underground Space
Since the classical element model cannot describe the nonlinear characteristics of rock during the entire compressive creep process, nonlinear elements and creep damage are generally introduced in the model to resolve this issue.
Tianbin Li, Chao Chen, Feng Peng, Chunchi Ma, Mou Li, Yixiang Wang   +5 more
doaj   +1 more source

Creep constitutive model of strain energy density considering the whole process of creep deformation.

PLoS ONE
Aiming at the problem that the traditional creep model is difficult to reflect the characteristics of accelerated creep stage of rock, the influence of stress state on accelerated creep is fully considered, and a constitutive model which can describe ...
Yuemei Li
doaj   +1 more source

Fractional Order Analysis of Creep Characteristics of Sandstone with Multiscale Damage

Mathematics
Deep mining is often accompanied by complex geological conditions, which can cause damage to the coal seam roof surrounding rock, thereby reducing its safety and stability.
Shuai Yang, Wentao Zhou, Senlin Xie, Bo Lei, Hongchen Song   +4 more
doaj   +1 more source

Paris on Stage: 1889-1914 [exhibition]; Vespasienne (pissoir) Model

, 2013
Information label with photograph of original, in situ; Scale model, part of the Paris on Stage: 1889-1914 exhibition held June 19, 2013 to February 23, 2014.
unknown (Canadian model maker)
core  

Viscoelastic plastic creep constitutive model based on energy conservation law and strain energy theory

Scientific Reports
On the basis of the law of conservation of energy, the three stages of rock creep are analyzed. The reasons for the difficulty in studying the accelerated creep stage of rocks using the traditional creep model are expounded.
Di Zhou, Xiangjin Tian, Shuguang Zhang, Wang Zeng, Minye Zhang, Yanchao Feng, Wenbo Liu, Xiang Huang, Mingzhuo Fan, Ye Sun   +9 more
doaj   +1 more source

Study on the fractional creep model of roadway filling paste under the coupling effect of pore water pressure and stress

Heliyon
Filling paste in deep roadways is significantly affected by groundwater, especially high pore water pressure, which increases the complexity and variability of the filling paste's mechanical properties.
Hongmiao Lv
doaj   +1 more source

Folder 9: Model engine data sheets and operating instructions, P - S, 1942, 1990, 1998

, 1942
MK model products advertisement for model engines.
MK Model Products
core  

Sub-series 2: Publications

, 1993
Bimonthly magazine discussing topics related to aviation and model airplane engines including collecting, restoring, maintaining, and identifying engines, along with ...
The Model Museum, Dannels, Timothy J.
core