Results 71 to 80 of about 3,306,443 (202)

Elastoplastic analysis of surrounding rock in weakly cemented soft rock roadways and its support practice

Scientific Reports
The effects of rock softening and shear dilation in the plastic zone are considered to examine the stability of the surrounding rock in deeply buried and weakly cemented soft rock roadways.
Jihua Zhang, Qiao Rui, Xinwei Li, Yushun Yang, Ge Wang, Jiarui Chen, Wei Shen, Chengwu Wang, Weili Liu   +8 more
doaj   +1 more source

Depth-sensing indentation tests in studying plastic instabilities [PDF]

, 2004
This review surveys the phenomenon of plastic instabilities occurring in depth-sensing indentation measurements. Investigations presented focus on the characterization of Portevin-Le Chatelier type instabilities observed in different metal alloys during ...
Bobji, Cahn, Chinh, Chinh, Cook, Gouldstone, J. Gubicza, J. Lendvai, Jiang, Kim, Krell, N.Q. Chinh, Neuhäuser, Tabor, Zs. Kovács   +14 more
core   +1 more source

Effects of the coupled high geothermal temperatures and high geostress in deeply buried tunnels and how they influence plastic zone evolution

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
The characteristics of the coupling between the high geothermal temperatures and high in-situ stresses in deep rock masses, as well as the characteristics of the plastic-zone evolution, are important reference indicators for safety control of the rock ...
Haibo Jiang, Gang Wei, Pengfei Xiang, Jun Zhang, Kebin Shi, Shuangxi Li, Chunmeng Jiang   +6 more
doaj   +1 more source

Dynamics of Large-Scale Plastic Deformation and the Necking Instability in Amorphous Solids

, 2002
We use the shear transformation zone (STZ) theory of dynamic plasticity to study the necking instability in a two-dimensional strip of amorphous solid. Our Eulerian description of large-scale deformation allows us to follow the instability far into the ...
A. E. Lobkovsky, G. Gagnon, J. Aboudi, J. Lubliner, J. S. Langer, J. S. Langer, J. S. Langer, J. S. Langer, J. W. Hutchinson, L. O. Eastgate, L. Pechenik, L. Pechenik, L. E. Malvern, M. L. Falk, M. L. Falk, P. N. Brown, R. M. McMeeking, V. Tvergaard   +17 more
core   +1 more source

Numerical study of the plastic behaviour in tension of welds in high strength steels [PDF]

, 2004
The influence of the mismatch between material properties and constraint on the plastic deformation behaviour of the heat affected zone of welds in high strength steels is investigated in this study, using finite element simulations.
Fernandes, J. V., Loureiro, A., Menezes, L. F., Rodrigues, D. M.   +3 more
core   +1 more source

The influence of out-of-plane stress on a plane strain problem in rock mechanics [PDF]

, 1987
This paper analyses the stresses and displacements in a uniformly prestressed Mohr-Coulomb continuum, caused by the excavation of an infinitely long cylindrical cavity.
Reed, M B
core  

Boundary lubrication with a glassy interface

, 2003
Recently introduced constitutive equations for the rheology of dense, disordered materials are investigated in the context of stick-slip experiments in boundary lubrication.
A. Argon, A. Mehta, A. Ruina, Anaël Lemaître, B. N. J. Persson, F. Bowden, F. Spaepen, G. S. Grest, H. K. Christenson, H. Yoshizawa, H. Yoshizawa, J. H. Dieterich, J. H. Dieterich, J. H. Dieterich, J. N. Israelachvili, J. R. Rice, J. Rice, Jean Carlson, K. Maeda, K. Maeda, L. C. E. Struik, L. F. Cugliandolo, M. L. Falk, M. Schoen, P. A. Thompson, S. Edwards, S. F. Edwards, S. Grannick, S. Takeuchi, T. Becker, V. Arnold   +30 more
core   +1 more source

SPH method applied to high speed cutting modelling [PDF]

, 2007
The purpose of this study is to introduce a new approach of high speed cutting numerical modelling. A Lagrangian smoothed particle hydrodynamics (SPH)- based model is arried out using the Ls-Dyna software.
Chieragatti, Rémy, Espinosa, Christine, Limido, Jérôme, Mabru, Catherine, Salaün, Michel   +4 more
core   +3 more sources

Characterising gross plastic deformation in design by analysis [PDF]

, 2005
An investigation of three simple structures is conducted to identify and characterise the condition of gross plastic deformation in pressure vessel design by analysis.
Donald Mackenzie, Gerdeen, Hongjun Li, Lubliner, Moffat, Muscat, Save, Townley   +7 more
core   +1 more source

Research on the differentiated support technology for roadways based on the mechanical response of the plastic zone

Energy Science & Engineering
With the advancement of coal resources mining to the deep part, the control of the surrounding rock of the roadway has become one of the main problems in the field of mining. At the present stage, the bolt support technology of the roadway in China still
Lei Fan, Weijun Wang, Chao Yuan, Yujie Ma   +3 more
doaj   +1 more source