Results 31 to 40 of about 213,966 (314)
Experimental Study on Damage Fracture Law of Coal from Solid-Propellant Blasting
Energies, 2022 The low permeability of coal seams has always been the main bottleneck restricting coalbed methane drainage. In this paper, a coal seam anti-reflection technology with solid-propellant blasting was proposed, and the composition and proportion of the ...
Huaibao Chu +7 more
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한국해양공학회지, 2020 Ductile fracture prediction is critical for the reasonable damage extent assessment of ships and offshore structures subjected to accidental loads, such as ship collisions and groundings.
Sung-Ju Park, Joonmo Choung
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Journal of Materials Research and Technology, 2021 The investigation on the formability of 7075-T6 aluminum alloy at elevated temperatures is significant due to its low plasticity at room temperature. Meso-Damage mechanics suggests that the growth and accumulation of micro-voids is an important factor ...
Xiangji Li, Meng Xu, Zhiqiang Zhang
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Study on the influence of oilfield water injection on casing damage [PDF]
E3S Web of Conferences, 2023 The casing damage of oil and water wells has seriously affected the normal production of the oilfield. This paper analyzes the high occurrence of casing damage in Saertu oil layer, and finds that there is a contradiction between the water injection ...
Ding Xiangnan
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A Stochastic Bulk Damage Model Based on Mohr-Coulomb Failure Criterion for Dynamic Rock Fracture
Applied Sciences, 2019 We present a stochastic bulk damage model for rock fracture. The decomposition of strain or stress tensor to its negative and positive parts is often used to drive damage and evaluate the effective stress tensor. However, they typically fail to correctly
Bahador Bahmani +2 more
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STUDY ON DUCTILE FRACTURE CRITERION PARAMETERS OF HIGH STRENGTH DUPLEX STEEL PLATE
Jixie qiangdu, 2023 In order to predict the ductile fracture failure of different high-strength steel plates, the damage parameters of the ductile fracture criterion were calibrated by designing the tensile, shear and fracture failure tests of four high-strength steel ...
MA ChunHui +5 more
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Influencing factors of conductivity of complex fractures in coalbed methane reservoir
Meikuang Anquan, 2022 Complex fracture network is easy to form after hydraulic fracturing in coalbed methane reservoir. In order to study the influencing factors of complex fracture conductivity, an improved proppant filling fracture conductivity tester was used to evaluate ...
ZHANG Hongjun, WANG Yuan, YANG Han
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Quantitative Damage and Fracture Mode of Sandstone under Uniaxial Load Based on Acoustic Emission
Advances in Civil Engineering, 2020 The damage degree and fracture mechanism of the rock are important to the bearing performance of the rock mass and the stability of the overlying structure.
Ying Xu +5 more
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Geofluids, 2020 After the completion of fracturing operation in coalbed methane (CBM), the fracturing fluid needs to flow back to the ground in time to reduce the damage to the coal reservoir.
Shenggui Liu +5 more
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Cracking Down on Fracture to Functionalize Damage
Physical Review LettersIn this Letter we propose a novel relationship between topology and damage propagation in Maxwell lattices that redefines fracture as a functional design feature rather than mere degradation. We demonstrate that topologically protected modes, inherently robust against perturbations, localize along lattice discontinuities and govern the mechanical ...
Leo de Waal +2 more
openaire +3 more sources