Results 71 to 80 of about 1,440 (191)

A Fractal-Enhanced Mohr–Coulomb (FEMC) Model for Strength Prediction in Rough Rock Discontinuities

Fractal and Fractional
Accurate prediction of the shear strength of rock discontinuities requires accounting for surface roughness, which is a factor neglected in the classical Mohr–Coulomb criterion.
Dina Kon, Sage Ngoie, Jisen Shu, Yadah Mbuyu, Dave Mbako   +4 more
doaj   +1 more source

Ensemble Kalman filter in latent space using a variational autoencoder pair

Quarterly Journal of the Royal Meteorological Society, EarlyView.
The use of the ensemble Kalman filter (EnKF) in strongly nonlinear or constrained atmospheric, oceanographic, or sea‐ice models can be challenging. Applying the EnKF in the latent space of a variational autoencoder (VAE) ensures that the ensemble members satisfy the balances and constraints present in the model.
Ivo Pasmans, Yumeng Chen, Tobias Sebastian Finn, Marc Bocquet, Alberto Carrassi   +4 more
wiley   +1 more source

Integrity Analysis of Cement Sheath in Annulus B of Vertical Section during Hydraulic Fracturing

Shiyou jixie, 2022
In the process of shale gas development in China,the phenomenon of sustained casing pressure(SCP)is widespread,which seriously affects the wellhead safety and life cycle of shale gas wells.Taking a shale gas well as an example,combined with the rock ...
Zeng Bo, Wang Dong, Song Yi, Lian Wei, Li Jun   +4 more
doaj  

A new smooth failure criterion for concrete inspired by Lubliner's condition

Structural Concrete, EarlyView.
Abstract A new failure criterion with 10 parameters is proposed, based on Lubliner's idea of joining two Drucker–Prager cones. The novelty lies in the way of introducing deviatoric shape variation: through two Podgórski's functions. This feature allows for improving plane stress cross‐section's compatibility with experimental data.
Inez Kamińska, Aleksander Szwed
wiley   +1 more source

Dual potential capacity model for short and deep reinforced concrete members containing steel fibers

Structural Concrete, EarlyView.
Abstract This study presents an analytical model for estimating the shear strength of short and deep steel fiber‐reinforced concrete (SFRC) members with a shear span‐to‐depth ratio less than 2.5. To this end, a dual potential capacity model (DPCM) is developed based on the demand‐capacity approach for evaluating the shear strength of SFRC beams that ...
Sun‐Jin Han, Deuckhang Lee, Hyunjin Ju, Dichuan Zhang   +3 more
wiley   +1 more source

High‐Density Polyethylene/Graphene Polymer Nanocomposites Used as Geogrids

Polymer Composites, Volume 47, Issue 3, Page 2550-2562, 10 February 2026.
High‐performance geogrids made from HDPE and graphene. ABSTRACT This study investigates the development of high‐density polyethylene (HDPE) nanocomposites reinforced with graphene (G), aiming to apply them in the production of geogrids for geotechnical use.
Paulo A. C. Luz, Danilo D. Siqueira, Natalia F. Braga, Patrícia M. S. Souza, Guilhermino J. M. Fechine   +4 more
wiley   +1 more source

Predicting Seismic Debris Distributions of Collapsed Unreinforced Masonry Structures Through Physics Engines and Machine Learning Algorithms

Earthquake Spectra, Volume 42, Issue 1, February 2026.
Unreinforced masonry (URM) structures are widespread worldwide, particularly in older urban districts. However, URM buildings—particularly those constructed before the introduction of modern building codes—are highly vulnerable to seismic hazard, and prone to experiencing local and/or global failures when subjected to significant horizontal shaking ...
Jiadaren Liu, Ersilia Giordano, Daniele Malomo   +2 more
wiley   +1 more source

Fracture‐Assisted Pressure Solution Creep of Granite: An Example From the Mont Blanc Massif, Western Alps

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 2, February 2026.
Abstract The Mont Blanc granite, as other deformed granites, has splitting properties attributed to two perpendicular planes: one formed by aligned fractures and the other by aligned micas in foliation planes. It is shown that this microstructure results from ductile deformation with stress‐driven dissolution of quartz and feldspar that passively ...
Jean‐Pierre Gratier, Luca Menegon, François Renard   +2 more
wiley   +1 more source

Developing a geomechanical model to predict breakdown pressure in a vertical borehole using failure analysis: a case study

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
Breakdown is an important process in geomechanics; a very complex process in hydraulic fracturing which has been the subject of extensive research in the literature. There exist several models in the literature for predicting the breakdown pressure.
Majid Jamshidian, Mostafa Mansuri Zadeh, Omid Mohammadzadeh, Mohammad Abdideh   +3 more
doaj   +1 more source

Interplay Between Mechanical and Petrochemical Models on the Fluid Extraction From Subduction Zones

Journal of Metamorphic Geology, Volume 44, Issue 2, Page 85-111, February 2026.
ABSTRACT The breakdown of hydrous minerals during subduction results in a densification of the rocks, producing volume changes that can trigger fluid pressure fluctuations and hydrofracturing. These volume changes are controlled by the Clapeyron slope of the reaction and are quantified here using a macroscopic framework that integrates a zero ...
Thorsten Andreas Markmann, Pierre Lanari   +1 more
wiley   +1 more source