Results 31 to 40 of about 3,306,443 (202)

Stucture and size of the plastic zone formed during nanoindentation of a metallic glass [PDF]

Journal of Non-Crystalline Solids, 2019
Using molecular dynamics simulation, we study the plastic zone created during nanoindentation of a large CuZr glass system. The plastic zone consists of a core region, in which virtually every atom undergoes plastic rearrangement, and a tail, where the ...
Karina E. Avila, Stefan Kuchemann, H. Urbassek   +2 more
semanticscholar   +1 more source

Determination of micro-scale plastic strain caused by orthogonal cutting [PDF]

, 2008
An electron beam lithography technique has been used to produce microgrids in order to measure local plastic strains, induced during an orthogonal cutting process, at the microscopic scale in the shear zone and under the machined surface. Microgrids with
Allais, Altintas, Beynon, Bitans, C. Pinna, Childs, Delaire, H. Ghadbeigi, Hernandez Castillo, Iwata, J.R. Yates, Jeelani, Jeelani, Karimi, Koshelev, Kurt, Lee, Lin, Madhavan, Mamalis, Merchant, Ng, Obata, Palmer, Pinna, S.R. Bradbury, Sadat, Sadat, Shet, Shih, Sun, Zhang   +31 more
core   +1 more source

Roof stability evaluation of large section open-off cut in lower slice of slicing mining

Gong-kuang zidonghua, 2022
In order to study the roof stability of large-section open-off cut in lower slice of slicing mining, the 14 boreholes in the top coal of the 203 open-off cut in the lower slice of 1−2 coal seam in Huojitu Mine of Daliuta Mine is taken as the research ...
CHAI Jing, QIAO Yu, GAO Shigang, GAO Dengyan, CHEN Sushe, LYU Qingxu, DU Wengang, HAN Zhicheng   +7 more
doaj   +1 more source

Descriptions of reversed yielding in bending [PDF]

, 2007
Existence of Bauschinger effect in bending-unbending of copper beams has been shown from experiment. In modelling of the Bauschinger effect, it is shown that a significant second plastic penetration can occur with the release of the moment required for ...
Bauschinger J., D W A Rees, Marciniak Z., Nadai A., Rees D. W. A.   +4 more
core   +1 more source

Relationship between plastic zone of roadway and coal and gas outburst hole

Meikuang Anquan, 2022
The outburst hole is of great significance to study the mechanism of coal and gas outburst. Through numerical simulation, the plastic zone of coal body at the excavation head of outburst roadway is obtained and compared with the actual outburst holes ...
HAN Sen, WANG Weijun, PENG Gang
doaj   +1 more source

Slow crack growth in polycarbonate films [PDF]

, 2005
We study experimentally the slow growth of a single crack in polycarbonate films submitted to uniaxial and constant imposed stress. The specificity of fracture in polycarbonate films is the appearance of flame shaped macroscopic process zones at the tips
, Barenblatt G. I., L Vanel, P. P Cortet, S Ciliberto, S Santucci, Santucci S., Stojimirovic A., Zhurkov S. N.   +8 more
core   +5 more sources

A New Unified Solution for Circular Tunnels Based on Generalized SMP Criterion considering the Strain Softening and Dilatancy

Advances in Civil Engineering, 2019
According to the strain-softening characteristics of rock mass, an ideal elastic strain-softening model is developed, and the surrounding rock of tunnels is subdivided into the plastic broken zone, plastic strain-softening zone, and elastic zone.
Qifeng Guo, Jiliang Pan, Xinghui Wu, Xun Xi, Meifeng Cai   +4 more
doaj   +1 more source

Extension characteristics of the “Butterfly-shaped” plastic zone and stability control of deep mining roadway in Xingdong mine

矿业科学学报, 2017
The distribution of plastic zone of surrounding rock in deep mining roadway is the key to control the stability of surrounding rock. Taking the deep mining roadway of Xingdong Mine as the research background, according to the "butterfly-shaped" plastic ...
Li Yongen, Guo Xiaofei, Ma Ji, Huo Tianhong, Zhang Hong   +4 more
doaj   +1 more source

Influence Factor of Roadway Surrounding Plastic Zone Under Unequal Stress in Two Directions

Meikuang Anquan, 2020
To study the distribution of surrounding rock plastic zone in roadway under unequal stress in two directions, the south rail lane in 500 m underground 81 mining area of Xutuan Coal Mine is taken as the engineering background.
DONG Hailong, CHEN Rubo, ZHANG Zhao, LIU Dianzhu
doaj   +1 more source

Effect of Principal Stress Field on the Development of Plastic Zone ahead of the Gateroad

Energies, 2020
The distribution of a plastic zone ahead of a gateroad plays a significant role in maintaining the long-term stability of mining spaces. For a long time, the principal stress field such as the values, the direction, etc.
Hongtao Liu, Linfeng Guo, Xidong Zhao, Pengfei Wang   +3 more
doaj   +1 more source