Zobrazeno 1 - 10
of 4 826
pro vyhledávání: '"Dynamic Fracture"'
Publikováno v:
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Vol 10, Iss 1, Pp 1-19 (2024)
Abstract To explore the progressive damage and fracture mechanics characteristics of brittle rock materials under combined dynamic-static loading. Taking account of the coupling effect of the constraint states of uniaxial stress (σ 1 ≥ σ 2 = σ 3
Externí odkaz:
https://doaj.org/article/d2c188a655304950a894c3e9c36c7f54
Autor:
Nikita Kazarinov, Aleksandr Khvorov
Publikováno v:
Defence Technology, Vol 32, Iss , Pp 32-44 (2024)
The paper considers application of artificial neural networks (ANNs) for fast numerical evaluation of a residual impactor velocity for a family of perforated PMMA (Polymethylmethacrylate) targets. The ANN models were trained using sets of numerical r
Externí odkaz:
https://doaj.org/article/6804cad6132d4eaab7fef323d9a6fd35
Publikováno v:
Journal of Rock Mechanics and Geotechnical Engineering, Vol 15, Iss 11, Pp 2831-2841 (2023)
The scaling-dependent behaviors of rocks are significant to the stability and safe operation of the structures built in or on rock masses for practical engineering. Currently, many size effect models are employed to connect laboratory measurements at
Externí odkaz:
https://doaj.org/article/2c00fc70d9d54c3197cf67f3e3b0cc9e
Publikováno v:
Defence Technology, Vol 27, Iss , Pp 64-82 (2023)
The finite-depth concrete panels have been widely applied in the protective structures, and its impact resistance and dynamic fracture failures, especially the scabbing/perforation limits, under high velocity projectile impact, are mainly concerned b
Externí odkaz:
https://doaj.org/article/11fb99653cb44c989dc2e439bef032bd
Publikováno v:
Journal of Rock Mechanics and Geotechnical Engineering, Vol 15, Iss 8, Pp 1911-1923 (2023)
In this study, a novel testing method is proposed to characterize the dynamic shear property and failure mechanism of rocks by introducing the short beam compression (SBC) specimen into the split Hopkinson pressure bar (SHPB) system. Firstly, the str
Externí odkaz:
https://doaj.org/article/06d71aa5630d487dab5dc3590db3ca44
Akademický článek
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Publikováno v:
Journal of Marine Science and Engineering, Vol 12, Iss 6, p 927 (2024)
Welded joints in naval ship hull structures are weak areas under explosive load, but there are relatively few studies investigating the failure characteristics of welded joints through dynamic fracture and explosion tests. In order to explore and pre
Externí odkaz:
https://doaj.org/article/8670aab84dae41f98f4f3d3e45a44ffc
Publikováno v:
Materials, Vol 17, Iss 8, p 1922 (2024)
Using the Split Hopkinson Pressure Bar technique, strain-limited dynamic compressive loading experiments were performed on TA1/TA15 heterostructure (HS) materials. The plastic deformation mechanisms, fracture forms, and energy absorption properties o
Externí odkaz:
https://doaj.org/article/381686490ae9472c9351811207b88715
Autor:
Weiwei LIANG, Hailong DANG, Bin LIU, Tianlong ZHANG, Xiaofeng WANG, Binchi HOU, Pengxing CUI, Qian WANG, Fengyuan ZHANG
Publikováno v:
Shiyou shiyan dizhi, Vol 45, Iss 3, Pp 566-575 (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 p
Externí odkaz:
https://doaj.org/article/32b5c2cb12ea4e33b0216325b96757ec
Publikováno v:
Polymer Testing, Vol 127, Iss , Pp 108198- (2023)
We propose and assess a new experimental technique to measure the fracture toughness of engineering materials and its sensitivity to strain rate. The proposed method is based on a ring expansion technique and it overcomes the limitations of current d
Externí odkaz:
https://doaj.org/article/15c01446be4640da8ffea7db80d05cc2