Results 41 to 50 of about 103 (87)

m‐AGC tangent visco‐plastic operator with hardening/softening, and application to the visco‐plastic relaxation analysis of stable and unstable problems using fracture‐based geomechanical interfaces

open access: yesInternational Journal for Numerical and Analytical Methods in Geomechanics, Volume 48, Issue 11, Page 2762-2789, 10 August 2024.
Abstract A previous perfect visco‐plastic constitutive formulation of the Perzyna type incorporating the concepts of prescribed stress increments and m‐AGC tangent operator (m‐Assumed algorithmic generalized compliance tangent operator) is extended to the case of Hardening/Softening (H/S).
Irene Jaqués, Ignacio Carol
wiley   +1 more source

On the Interplay Between Distributed Bulk Plasticity and Local Fault Slip in Evolving Fault Zone Complexity

open access: yesGeophysical Research Letters, Volume 51, Issue 14, 28 July 2024.
Abstract We numerically investigate the role of plastic strain accumulation on the mechanical response of a planar strike‐slip fault. Our models show that fault‐zone strength significantly impacts the ensuing sequence of earthquakes. Weaker fault zones accumulating more plastic strain promote more complexity in the seismicity pattern through aperiodic ...
Mohamed Abdelmeguid   +2 more
wiley   +1 more source

Physics-Based Thermo-Mechanical Fatigue Model for Life Prediction of High Temperature Alloys

open access: yes, 2021
High temperature alloys have been extensively used in many applications, such as furnace muffles, fuel nozzles, heat treating fixtures and fuel nozzles.
Gulhane, Abhilash Anilrao
core   +1 more source

Progress and Perspective of Controlling Li Dendrites Growth in All‐Solid‐State Li Metal Batteries via External Physical Fields

open access: yesAdvanced Energy and Sustainability Research, Volume 5, Issue 1, January 2024.
This review focuses on the current research progress of utilizing a variety of external physical fields to regulate lithium dendrites penetration in all solid‐state batteries. To this end, the mechanical properties of lithium and solid electrolytes as well as the experimental results that visually track lithium penetration dynamics are also reviewed ...
Jianhua Yao   +9 more
wiley   +1 more source

Adiabatic shear band localization fracture of solids in dynamic loading processes

open access: yes, 1994
The main objective of the present paper is the application of a recently developed viscoplastic-damage type constitutive theory for high strain rate flow process and ductile fracture to the problem of shear band localization and fracture of dynamically ...
P. Perzyna, Perzyna, P.
core   +1 more source

A constitutive model for analyzing martensite formation in austenitic steels deforming at high strain rates [PDF]

open access: yes, 2012
This study presents a constitutive model for steels exhibiting SIMT, based on previous seminal works, and the corresponding methodology to estimate their parameters.
FERNANDEZ-SAEZ, José   +5 more
core   +1 more source

A viscoelastic-viscoplastic, double yield surface constitutive model for fine-grained and organic soils

open access: yes
Time and rate effects may have a crucial role in many engineering applications. In this work, an innovative viscoelastic and viscoplastic framework is presented within the framework of the overstress theory. The peculiarity of this approach is the use of
Gajo, A., Madaschi, A.
core   +1 more source

Experimental and numerical analysis on the martensitic transformation in AISI 304 steel sheets subjected to perforation by conical and hemispherical projectiles [PDF]

open access: yes, 2013
Lien vers la version éditeur: http://www.sciencedirect.com/science/article/pii/S0020768312004039In this work, an experimental and numerical analysis of the martensitic transformation in AISI 304 steel sheets subjected to perforation by conical and ...
Rodríguez-Martínez, José Antonio   +10 more
core   +1 more source

Modeling of polycrystals using a gradient crystal plasticity theory that includes dissipative micro-stresses

open access: yes, 2011
International audienceThis study investigates thermodynamically consistent dissipative hardening in gradient crystal plasticity in a large deformation context. A viscoplastic model which accounts for constitutive dependence on the slip, the slip gradient
Swantje Bargmann   +3 more
core   +1 more source

Time-dependent modeling of subsidence due to drainage in bounding shales: Application to a depleted gas field in Louisiana

open access: yes, 2018
Hydrocarbon production is an important process contributing to the subsidence in Louisiana. Releveling data from National Geodetic Survey show that subsidence along several major oil and gas fields accelerated after production when reservoirs were nearly
Zhou, Yaneng   +3 more
core   +1 more source

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