Results 231 to 240 of about 11,269 (260)
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Numerical Plastic-Fracture Models for Concrete
1984The results of finite-element analyses of concrete structures utilizing a plasticity-based concrete model are summarized. The complete plastic-fracture model assumes a four-parameter failure criterion and a plasticity model with mixed hardening rule for the irreversible deformations induced by micro-cracks.
E. C. Ting, M. Yener
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Numerical Modeling of Fracture Propagation During Temporary-Plugging Fracturing
SPE Journal, 2019Summary Temporary-plugging fracturing (TPF) is becoming a promising technique for maximizing the stimulated-reservoir volume in tight reservoirs by injecting diverting agents to plug the preferred perforations and/or hydraulic fractures (HFs). Previous work has developed diverting agents and evaluated their blocking efficiency.
Yushi Zou, Xinfang Ma, Shicheng Zhang
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Fracture of Metal Foams: In‐situ Testing and Numerical Modeling
Advanced Engineering Materials, 2004AbstractThis paper is on a combined experimental/modeling study on the tensile fracture of open‐cell foams. In‐situ tensile tests show that individual struts can fail in a brittle or ductile mode, presumably depending on the presence of casting defects. In‐situ single strut tests were performed, enabling observation of deformation and fracture behavior
Onck, P.R. +3 more
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Numerical modeling of fracture coalescence in a model rock material
International Journal of Fracture, 1998The crack pattern, as well as crack initiation, -propagation and -coalescence observed in experiments on gypsum specimens with pre-existing fractures in uniaxial, biaxial, and tensile loading are satisfactorily predicted with the numerical model presented in this paper.
Antonio Bobet, Herbert H. Einstein
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Numerical Modelling of Acid Fracturing Across Fracture-Propagation Regimes
ADIPECSummary Acid fracturing in tight formations exemplifies reactive flow coupled with rock deformation and crack growth, and remains a widely used stimulation technique. Predictive modeling is challenging because pressure-dependent apertures, tip-driven propagation, and wall dissolution interact across distinct propagation regimes.
Hongzhuo Fan, Cunqi Jia
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Hydraulic Fracture Configuration Modeling: Numerical Evaluations
1988Salient features of a three-dimensional hydraulic fracture finite element simulator are identified. Selected comparisons associated with a penny-shaped model are presented.
S. H. Advani, T. S. Lee, J. K. Lee
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Numerical modeling of the fracture process in a three-unit all-ceramic fixed partial denture
Dental Materials, 2007H Y Liu, Wen Kou, Göran Sjögren
exaly