Results 261 to 270 of about 167,670,099 (290)

Numerical Plastic-Fracture Models for Concrete

1984
The 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
openaire   +1 more source

Numerical Modelling of Fracture Propagation

1983
Why should one study fracture propagation? Is not prediction of fracture initiation the object of fracture mechanics? In his papers on rupture under tensile and compressive loading, Griffith1,2 proposed conditions for fracture initiation which he presumed to be coincident with structural instability. The vast majority of the fracture mechanics research
openaire   +1 more source

Numerical Modeling of Fracture Propagation During Temporary-Plugging Fracturing

SPE Journal, 2019
Summary 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
openaire   +1 more source

Fracture of Metal Foams: In‐situ Testing and Numerical Modeling

Advanced Engineering Materials, 2004
AbstractThis 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., van Merkerk, R.O., De Hosson, J.Th.M., Schmidt, I.   +3 more
openaire   +3 more sources

Numerical modeling of fracture coalescence in a model rock material

International Journal of Fracture, 1998
The 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
openaire   +1 more source

Numerical Modelling of Acid Fracturing Across Fracture-Propagation Regimes

ADIPEC
Summary 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
openaire   +1 more source

Numerical prediction of sheared edge profiles in sheet metal trimming using ductile fracture modeling

International Journal of Mechanical Sciences, 2022
Myoung-Gyu Lee, Chanyang Kim, Shamik Basak   +2 more
exaly  

Developing a new algorithm for numerical modeling of discrete fracture network (DFN) for anisotropic rock and percolation properties

Journal of Petroleum Exploration and Production, 2021
Zhongwei Chen, Mohammad Sarmadivaleh, Erfan Hosseini   +2 more
exaly  

Numerical investigation of water retention in secondary fractures and apparent permeability modeling in shale gas production

Journal of Petroleum Science and Engineering, 2020
Juliana Y Leung, Chuanyao Zhong
exaly  

Numerical modeling of the fracture process in a three-unit all-ceramic fixed partial denture

Dental Materials, 2007
Hongyuan Y. Liu, Wen Kou
exaly