Results 121 to 130 of about 1,278 (268)

Langrangian finite element and finite difference methods for poisson problems

, 1974
The use of Lagrangian finite element methods for solving a Poisson problem produces systems of linear equations, the global stiffness equations. The components of the vectors which are the solutions of these systems are approximations to the exact ...
Whiteman, J R
core  

Numerical Modeling of Geological Fault Reactivation Using Sequential Coupling Strategies

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT The interaction between fluid flow and mechanical deformation in fault zones can lead to processes of fault reactivation, triggering potential geomechanical problems such as seismicity, well collapse, fluid migration to shallower layers, and aggravated surface subsidence.
Julio Rueda, Cristian Mejia, Roberto Quevedo, Deane Roehl   +3 more
wiley   +1 more source

Variational consistent one-point integration with Taylor's expansion-based stabilization in the second-order meshfree Galerkin method for strain gradient elasticity

A generalized variational principle with five independent variables is proposed for strain gradient elasticity, including displacement, strain, strain gradient, stress, and double stress. Based on the principle, a one-point integration scheme is designed
Wang, B.B., Zhang, J.W., Lu, Chunsheng, Zhao, M.H., Wang, R.Y.   +4 more
core   +1 more source

Semi‐Analytical Solution of Time‐Harmonic Soil–Pile Interaction Using Love Numbers in Transversely Isotropic and Layered Half‐Spaces

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT An efficient semi‐analytical approach based on the Fourier–Bessel series (FBS) system of vector functions and the stiffness matrix method is proposed to study the dynamic response of axially loaded piles embedded in transversely isotropic (TI) layered soil.
Quoc Kinh Tran, Thi‐My‐Linh Huynh, Ernian Pan, Chih‐Ping Lin, Yehya Rasool, Fazle Ghaffar   +5 more
wiley   +1 more source

Overshooting of Hypoplastic Models With Intergranular Strain: Manifestation, Implications and Remedy

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT Intergranular strain extensions of hypoplasticity (IGS, ISA, GIS) are widely used to model small‐strain and cyclic soil behaviour. However, recent studies and our own simulations reveal that these models can exhibit stress overshooting not only under repeated small loading cycles but also during monotonic loading.
Jan Machaček, Merita Tafili, Carlos Grandas Tavera   +2 more
wiley   +1 more source

Variational derivation of modal-nodal finite difference equations in spatial reactor physics

, 1972
"July 1972."VitaAlso written by the first author as a Ph. D. thesis, MIT, Dept. of Nuclear Engineering, 1972Includes bibliographical references (pages 134-137)A class of consistent coarse mesh modal-nodal approximation methods is presented for the ...
Henry, Allan F., Bailey, Patrick Gage
core  

A Geometrically Regularized Gradient‐Damage Model With Orthogonality‐Based Energy Split for Dynamic Anisotropic Compression‐Shear Fracture

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT This study proposes a novel geometrically regularized gradient‐damage model for simulating dynamic mixed‐mode fracture in orthotropic materials with tension–compression asymmetry. In this model, a thermodynamic framework is formulated by incorporating damage dissipation into internal energy evolution, from which the constitutive relation and ...
Hui Li, Shanyong Wang
wiley   +1 more source

Nigericin‐Triggered Phosphodynamics in Inflammasome Formation and Pyroptosis

PROTEOMICS, EarlyView.
ABSTRACT Innate immune signaling relies heavily on phosphorylation cascades to mount effective immune responses. Although traditional innate immune signaling cascades following TLR4 stimulation have been investigated through a temporally quantitative phosphoproteomic lens, far fewer studies have applied these methods to distinct signaling following the
Vanya Bhushan, Clinton J. Bradfield, Sandhini Saha, Sung Hwan Yoon, Iain D. C. Fraser, Aleksandra Nita‐Lazar   +5 more
wiley   +1 more source

Market coupling and the organization of counter-trading: separating energy and transmission again? [PDF]

The horizontal integration of the energy market and the organization of transmission services remain two open issues in the restructured European electricity sector. The coupling of the French, Belgian and Dutch electricity markets (the trilateral market)
OGGIONI, Giorgia, SMEERS, Yves
core  

Application of Non‐Isothermal Network Theory With Curved‐Channel Element Characteristics to Predict Melt Conveying in High‐Performance Single‐Screw Extruders

Journal of Polymer Science, EarlyView.
This study presents a fast and accurate calculation tool to predict conveying of polymer melts in single‐screw extruders. Integrating generalized sub‐models into network theory allows to represent the complex screw shapes and material behavior more realistically. Tests on an industrial extruder show close agreement with experiments, outperforming older
Daniel Herzog, Wolfgang Roland, Christian Marschik, Gerald Berger‐Weber   +3 more
wiley   +1 more source