Results 71 to 80 of about 2,822,738 (195)

A Brittle Constitutive Law for Long‐Term Tectonic Modeling Based on Sub‐Critical Crack Growth

Geochemistry, Geophysics, Geosystems
Adequate representations of brittle deformation (fracturing and faulting) are essential ingredients of long‐term tectonic simulations. Such models commonly rely on Mohr‐Coulomb plasticity coupled with prescribed softening of cohesion and/or friction with
Léo Petit, Jean‐Arthur Olive, Alexandre Schubnel, Laetitia Le Pourhiet, Harsha S. Bhat   +4 more
doaj   +1 more source

A multi-level interface model for damaged masonry [PDF]

, 2013
The aim of the present work is to propose a new micro-mechanical model in the context of the deductive approach used to derive interface models. This model, based on a previous study introduced previously by A. Rekik and F.
Lebon, Frédéric, Raffa, Maria Letizia, Sacco, Elio, Welemane, Hélène   +3 more
core   +3 more sources

Scaling Laws of Stress and Strain in Brittle Fracture

, 2005
A numerical realization of an elastic beam lattice is used to obtain scaling exponents relevant to the extent of damage within the controlled, catastrophic and total regimes of mode-I brittle fracture.
A. Hansen, B. Skjetne, Herrmann H. J., Hestenes M. R., Roark R. J., Roux S., T. Helle   +6 more
core   +1 more source

Intermittency and roughening in the failure of brittle heterogeneous materials [PDF]

, 2009
Stress enhancement in the vicinity of brittle cracks makes the macro-scale failure properties extremely sensitive to the micro-scale material disorder.
Bonamy, D.
core   +4 more sources

Evaluating subsurface damage in optical glasses [PDF]

Journal of the European Optical Society-Rapid Publications, 2011
Hard brittle materials (e.g. glasses and ceramics) increasingly appeal to general interests because of their excellent physical, mechanical and chemical properties such as super hardness and strength at extreme temperature and chemical stability.
Wang Jian, Li Yaguo, Han Jinghua, Xu Qiao, Guo Yinbiao   +4 more
doaj   +1 more source

Electro-Magnetic Earthquake Bursts and Critical Rupture of Peroxy Bond Networks in Rocks

, 2006
We propose a mechanism for the low frequency electromagnetic emissions and other electromagnetic phenomena which have been associated with earthquakes. The mechanism combines the critical earthquake concept and the concept of crust acting as a charging ...
Allègre, Alperovich, Andersen, Andersen, Anifrani, Ashby, Bak, Bell, Bianchi, Bouchaud, Bowman, Bowman, Bowman, Bowman, Brehm, Brehm, Bufe, Bufe, Chen, Cliverd, Contoyiannis, D. Sornette, Debate on VAN (special issue), Derr, Dey, Dickinson, Dieterich, Edwards, Eftaxias, Eftaxias, Ellsworth, F. Freund, Freund, Freund, Freund, Freund, Freund, Freund, Freund, Freund, Freund, Freund, Freund, Freund, Freund, Frid, Friebele, Frost, Fujinawa, Fujinawa, Garcimartin, Gershenzon, Gokhberg, Hayakawa, Heimpel, Helmstetter, Hickman, Huang, Huang, Ivanov, Jaumé, Johansen, Johansen, Johnston, Jones, Jones, Kagan, Kapiris, Kapiris, Kathrein, Keilis-Borok, Keilis-Borok, Keilis-Borok, King, King, King, Knopoff, Kopytenko, Kossobokov, Lei, Lei, Lei, Levin, Lindh, Liu, Liu, Ma, Main, Martelli, Martens, Martin, Mogi, Molchanov, Molchanov, Molchanov, Mora, Moura, Moura, Moura, Naaman, NASDA-CON-960003, Nechad, Nechad, Nitsan, Ohta, Ondoh, Ouillon, Ouillon, Ouzounov, Park, Place, Pulinets, Pulinets, Pulinets, Qiang, Rabinovitch, Raleigh, Regenauer-Lieb, Ricci, Rossman, Roux, Sahimi, Saleur, Sammis, Sammis, Shamir, Smyth, Sornette, Sornette, Sornette, Sornette, Sornette, Sornette, Sornette, Sornette, Sornette, Sornette, Sorokin, Srivastav, St-Laurent, Stauffer, Sykes, Taylor, Tocher, Trigunait, Tronin, Tronin, Tsukuda, Varotsos, Vere-Jones, Vershinin, Wilson, Yasui, Yen, Yoshida, Yoshino, Yukalov, Zhuang, Zlotnicki   +158 more
core   +1 more source

Brittle mechanical behavior and damage constitutive model of deep mylonite under the high geo-stress state

Frontiers in Earth Science
IntroductionDuring the excavation of deep underground engineering, stress redistribution in rock mass often leads to obvious stress-deformation failure characteristics.
Guoping Peng, Wei Lin, Mengdi Zhao
doaj   +1 more source

Coupled Evolution of Preferential Paths for Force and Damage in the Pre-failure Regime in Disordered and Heterogeneous, Quasi-Brittle Granular Materials

Frontiers in Materials, 2020
A disordered and heterogeneous, quasi-brittle granular material can withstand certain levels of internal damage before global failure. This robustness depends not just on the bond strengths but also on the topology and redundancy of the bonded contact ...
Antoinette Tordesillas, Sanath Kahagalage, Charl Ras, Michał Nitka, Jacek Tejchman   +4 more
doaj   +1 more source

Scaling effects in notched composites [PDF]

, 2010
A program of scaled tests on unnotched and open-hole tension and compression specimens is summarized. Quasi-isotropic IM7/8552 carbon-fiber epoxy specimens have been tested using two different scaling techniques: sub-laminate-level ([45/90/ - 45/0]ns ...
Hallett, S. R., Soutis, C., Wisnom, M. R.   +2 more
core   +1 more source

Fracture features of brittle coal under uniaxial and cyclic compression loads

International Journal of Coal Science & Technology, 2023
Under the effects of complex geological and stress environments, burst hazards continue to be a major challenge for underground space utilization and deep resources exploration as its occurrence can lead to personnel causalities, equipment damage and ...
Shikang Song, Ting Ren, Linming Dou, Jian Sun, Xiaohan Yang, Lihai Tan   +5 more
doaj   +1 more source