Results 21 to 30 of about 80,595 (263)
Study on the influence of impact tendency on dynamic fracture behavior of coal
Meikuang Anquan, 2023 In order to investigate the influence of impact tendency on dynamic fracture characteristics of coal, cyclic loading and unloading tests with variable upper limit and dynamic and static type I dynamic fracture tests are carried out on three types of coal.
Guo LI, Chuanjiu ZHANG, Yongliang YANG
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Measurement of dynamic fracture toughness by double torsion testing
Mechanical Engineering Journal, 2018 A dynamic double torsion testing machine and measurement system were developed on the basis of the split Hopkinson pressure bar test and the theoretical one-dimensional wave propagation in the input and output bars, and their validity was confirmed by ...
Tadaharu ADACHI +6 more
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Shiyou shiyan dizhi, 2023 In order to further clarify the mechanism of water injection induced dynamic fractures in ultra-low permeability reservoirs and its influence on water injection development in ultra-low permeability reservoirs, the genetic mechanism and propagation ...
Weiwei LIANG +8 more
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Experimental study on impact fracture of cantilever beam-column specimen with prefabricated crack
矿业科学学报, 2018 The impact fracture mechanics of the cantilever beam-column specimens with different inclination angles(0°,30°,60°) prefabricated cracks subjected to hammer impact loading were studied by using digital dynamic caustic test system.The results show that ...
Li Qing +5 more
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Shock and Vibration, 2021 A hybrid finite-discrete element method (FDEM) is proposed to model rock fracture initiation and propagation during a three-point bending test under quasistatic and dynamic loading conditions.
Huaming An, Yushan Song, Hongyuan Liu
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Modeling Impact-induced Failure of Polysilicon MEMS: A Multi-scale Approach
Sensors, 2009 Failure of packaged polysilicon micro-electro-mechanical systems (MEMS) subjected to impacts involves phenomena occurring at several length-scales. In this paper we present a multi-scale finite element approach to properly allow for: (i) the propagation ...
Stefano Mariani +3 more
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Conformal dynamics of precursors to fracture [PDF]
Europhysics Letters (EPL), 2003 An exact integro-differential equation for the conformal map from the unit circle to the boundary of an evolving cavity in a stressed 2-dimensional solid is derived. This equation provides an accurate description of the dynamics of precursors to fracture when surface diffusion is important.
Barra, F, Herrera, M, Procaccia, I
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Experimental and Numerical Investigation of Rock Dynamic Fracture [PDF]
International Journal of Mining and Geo-Engineering, 2017 Rapid development of engineering activities expands through a variety of rock engineering processes such as drilling, blasting, mining and mineral processing.
Aliasghar Mirmohammadlou +3 more
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The Loading Rate Effect on the Fracture Toughness of Marble Using Semicircular Bend Specimens
Geofluids, 2020 A series of dynamic fracture experiments on semicircular bend (SCB) marble specimens were conducted to characterize the loading rate effect using the INSTRON testing machine and the modified SHPB testing system.
Fengqiang Gong +2 more
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Dynamics of fractures in quenched disordered media [PDF]
Physical Review E, 1998 We introduce a model for fractures in quenched disordered media. This model has a deterministic extremal dynamics, driven by the energy function of a network of springs (Born Hamiltonian). The breakdown is the result of the cooperation between the external field and the quenched disorder.
Guido Caldarelli +2 more
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