Results 61 to 70 of about 213,665 (198)

Non-proportional deformation paths for sheet metal: experiments and models [PDF]

open access: yes, 2009
For mild steel, after significant plastic deformation in one direction, a subsequent deformation in an orthogonal direction shows a typical stress overshoot compared to monotonic deformation. This phenomenon is investigated experimentally and numerically
Boogaard, A.H. van den, Riel, M. van
core   +2 more sources

A study on anisotropic hardening of 7075 aluminum alloy based on non-associated flow rules

open access: yesJournal of Materials Research and Technology
The accurate description of anisotropic plastic deformation is key to accurately predicting the stamping forming of metal sheets. The anisotropic yield criterion, when based on the assumption of isotropic hardening, often leads to significant ...
Xiaodong Wu, Zhen Zhang, Wenkang Zhang
doaj   +1 more source

Strain hardening analysis and modelling of its parameters for sintered Al and Al-1%C preforms during cold upsetting

open access: yesJournal of Materials Research and Technology, 2019
An attempt has been made to model strain hardening parameters for sintered aluminium and aluminium-1%carbon preforms that are subjected to cold upsetting. In addition to compositions, the sintering temperatures and lubricants are considered as variables.
Rajeshkannan Ananthanarayanan   +3 more
doaj   +1 more source

The effect of material cyclic deformation properties on residual stress generation by laser shock processing [PDF]

open access: yes, 2019
Laser shock processing (LSP) is a mechanical surface treatment to induce a compressive residual stress state into the near surface region of a metallic component.
Angulo, I.   +6 more
core   +1 more source

Hardening effects on formability limit prediction based on gurson-type damage models and bifurcation analysis [PDF]

open access: yes, 2017
In this work, ductility limits of metallic materials, associated with the occurrence of strain localization, are predicted using the GTN damage model coupled with bifurcation theory.
Abed-Meraim, F., Chalal, H.
core   +2 more sources

Uncoupled material model of ductile fracture with directional plasticity [PDF]

open access: yes, 2017
Proposed paper deals with the application of plastic response with directional distortional hardening (DDH) in uncoupled ductile fracture model and comparison of the results with the same ductile fracture model based on isotropic J2 plasticity.
Dzugan, Jan   +4 more
core  

Size effects and idealized dislocation microstructure at small scales: predictions of a phenomenological model of Mesoscopic Field Dislocation Mechanics: Part I

open access: yes, 2005
A Phenomenological Mesoscopic Field Dislocation Mechanics (PMFDM) model is developed, extending continuum plasticity theory for studying initial-boundary value problems of small-scale plasticity.
Acharya, Amit, Roy, Anish
core   +1 more source

Maximum norm wellposedness of nonlinear kinematic hardening models

open access: yesContinuum Mechanics and Thermodynamics, 1997
We prove the wellposedness, with respect to the maximum norm, of stress-strain laws of nonlinear kinematic hardening type, in particular of the Chaboche model.
Brokate, Martin, Krejčí, Pavel
openaire   +3 more sources

Effects of the Unified Viscoplastic Formulation and Temperature Terms on the Thermomechanical Behavior of Soldering Materials [PDF]

open access: yes, 2012
Solder materials are critical packaging compounds and due to usually weakest melting temperature among packaging constitutive materials, thus, they are frequently subjected to a multitude of physical phenomena: creep, fatigue and combined hardening ...
Alexis, Joël   +3 more
core   +2 more sources

Relationships between depth-resolved primary radiation damage, irradiation-induced nanostructure and nanoindentation response of ion-irradiated Fe-Cr and ODS Fe-Cr alloys

open access: yesNuclear Materials and Energy, 2020
Ion irradiations are indispensable for exploring radiation effects on materials, for example, radiation hardening. However, the extraction of radiation hardening as function of displacement damage from the nanoindentation (NI) response of self-ion ...
K. Vogel   +5 more
doaj   +1 more source

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