Results 11 to 20 of about 504,506 (305)

Rock damage and fracturing induced by high static stress and slightly dynamic disturbance with acoustic emission and digital image correlation techniques

Journal of Rock Mechanics and Geotechnical Engineering, 2021
A series of coupled static-dynamic loading tests is carried out in this study to understand the effect of slightly dynamic disturbance on the rocks under high static stress.
Shuting Miao, Peng-Zhi Pan, Petr Konicek, Peiyang Yu, Kunlun Liu   +4 more
doaj   +3 more sources

Nonlinear dynamic disturbance decoupling [PDF]

29th IEEE Conference on Decision and Control, 1990
The authors introduce the dynamic disturbance decoupling problem for nonlinear systems. A local solution of the problem is given. A compensator solving the problem can be obtained by means of S.N.
Huijberts, H.J.C., Nijmeijer, H., van der Wegen, L.L.M.   +2 more
openaire   +1 more source

Deformation characteristics and novel strain criteria of strainbursts induced by low‐frequency cyclic disturbance

Deep Underground Science and Engineering, 2023
Strainbursts induced by cyclic disturbance with low frequency (termed as cyclic‐induced strainbursts) are major dynamic disasters during deep excavation and mining.
Lihua Hu, Minghe Ju, Peng Zhao, Xiaozhao Li   +3 more
doaj   +1 more source

Conservation planning integrating natural disturbances: Estimating minimum reserve sizes for an insect disturbance in the boreal forest of eastern Canada.

PLoS ONE, 2022
Large natural disturbances such as insect outbreaks and fire are important processes for biodiversity in forest landscapes. However, few methods exist for incorporating natural disturbances into conservation planning. Intact forest landscapes, such as in
Marc Edwards, Kim Lisgo, Shawn Leroux, Meg Krawchuk, Steve Cumming, Fiona Schmiegelow   +5 more
doaj   +2 more sources

Failure and instability mechanism of anchored surrounding rock for deep chamber group with super-large section under dynamic disturbances

Rock and Soil Mechanics, 2021
The interaction of super-large section chamber group in deep and close-distance condition will lead to stress concentration and wide failure range of surrounding rock, especially under dynamic disturbances.
LIU Xue-sheng, FAN De-yuan, TAN Yun-liang, WANG Xin, ALEXEY Agafangelovich   +4 more
doaj   +1 more source

Development and application of multifunctional shear test apparatus for rock discontinuity under dynamic disturbance loading

Rock and Soil Mechanics, 2022
Dynamic disturbance is an important influence factor that causes the sliding instability of rock discontinuity and then triggers strong dynamic geological disasters, such as earthquakes and rock bursts.
CUI Guo-jian, ZHANG Chuan-qing, ZHOU Hui, LU Jing-jing, GAO Yang, HU Ming-ming, HU Da-wei   +6 more
doaj   +1 more source

The time-dependent deformation and damage constitutive model of rock based on dynamic disturbance tests

Open Geosciences, 2023
In the deep rock excavation process, the rock will produce deformation and damage under multiple dynamic disturbances, while there is also unrecoverable time-dependent deformation.
Chu Shaofeng, Chen Shihai, Liu Minlong, Huang Jiang, Wei Haixia   +4 more
doaj   +1 more source

Influence of dynamic disturbance on rock creep from time, space and energy aspects

Geomatics, Natural Hazards & Risk, 2022
In order to explore the influence of dynamic disturbance on creep behavior of rock, the creep damage evolution in rock under the dynamic disturbance are reproduced with creep damage model.
Zhen Yang, Wancheng Zhu, Kai Guan, Baoxu Yan, Hanwen Jia   +4 more
doaj   +1 more source

Time-dependent deformation characteristics of red sandstone under multiple dynamic disturbances

Yantu gongcheng xuebao, 2022
In order to explore the time-dependent deformation characteristics of deep engineering rock mass under disturbed action, the dynamic disturbance triaxial loading tests on red sandstone are carried out by using the disturbed servo triaxial loading system.
LIU Min-long 1, CHEN Shi-hai 1, SHI Wei-min 1, CUI Guang-qiang 1, SHEN Feng 1, LI Hai-bo 2
doaj   +1 more source

Dynamic Disturbance Decoupling for Nonlinear Systems [PDF]

SIAM Journal on Control and Optimization, 1992
Summary: In analogy with the dynamic input-output decoupling problem the dynamic disturbance decoupling problem for nonlinear systems is introduced. A local solution of this problem is obtained in the case that the system under consideration is invertible. The solution is given in algebraic as well as in geometric terms.
Huijberts, H.J.C., Nijmeijer, H., van der Wegen, L.L.M.   +2 more
openaire   +4 more sources