Results 21 to 30 of about 24,291 (299)

Isotropic and kinematic hardening of a high entropy alloy

Scripta Materialia, 2020
Abstract The contribution of kinematic hardening to the overall strain hardening of a high entropy alloy (HEA) was investigated for the first time ever. It was assessed for a single-phase equiatomic CoCrFeMnNi alloy based on a study of the Bauschinger effect. The observed occurrence of high back stresses signifies substantial kinematic hardening.
Bouaziz, O., Moon, Jongun, Kim, Hyoung, Estrin, Yuri   +3 more
openaire   +2 more sources

Combined hardening parameters of steel CK45 under cyclic strain-controlled loading: Calibration methodology and numerical validation

Journal of Mechanical Engineering and Sciences, 2020
This study is to indicate the methodology of investigating the behavior of materials in the plastic domain while bearing cyclic loading i.e. low cycle fatigue.
Bahman Paygozar, S.A Dizaji, M.A Saeimi Sadigh   +2 more
doaj   +1 more source

Anisotropic behaviour law for sheets used in stamping: A comparative study of steel and aluminium [PDF]

, 2003
For a car manufacturer, reducing the weight of vehicles is an obvious aim. Replacing steel by aluminium moves towards that goal. Unfortunately, aluminium's stamping numerical simulation results are not yet as reliable as those of steel.
Bruno Macquaire, François, Hill, Jean-Jacques Sinou, Lemaı̂   +4 more
core   +6 more sources

Characterisation and modelling of anisotropic hardening behaviour of cubic and hexagonal close packed polycrystalline metals

Philosophical Magazine Letters
In this study, anisotropic non-proportional hardening behaviour of the sheet metals with different crystalline structures is investigated. The investigated materials particularly exhibit the Bauschinger effect and complex transient hardening behaviour ...
Jinwoo Lee, Hyung-Rim Lee, Myoung-Gyu Lee   +2 more
doaj   +1 more source

Discovering plasticity models without stress data

npj Computational Materials, 2022
We propose an approach for data-driven automated discovery of material laws, which we call EUCLID (Efficient Unsupervised Constitutive Law Identification and Discovery), and we apply it here to the discovery of plasticity models, including arbitrarily ...
Moritz Flaschel, Siddhant Kumar, Laura De Lorenzis   +2 more
doaj   +1 more source

Plastic load evaluation for a fixed tube sheet heat exchanger subject to proportional loading [PDF]

, 2012
The plastic load of pressurised components can be calculated based on both the twice elastic slope and tangent methods. Both methods are problematic since they rely on parameters that are localised and therefore have a strong dependency on the gradient ...
Behseta, Khosrow, Hamilton, Robert, Mackenzie, Donald   +2 more
core   +1 more source

Determination of Kinematic Hardening Parameters in W-Temper Forming of 6082 Aluminum Alloy [PDF]

MATEC Web of Conferences
This study investigates the kinematic hardening behavior of 6082 aluminum alloy during W-temper forming, with a particular focus on the influence of transition time following W-temper heat treatment on key kinematic hardening parameters.
Dessie Jemal Ebrahim, Rónai László, Lukács Zsolt   +2 more
doaj   +1 more source

A Design Optimization Study for the Die Dimensioning Using the Locking Nut Folding Simulation

Journal of Mechanical Engineering, 2021
An inverse analysis based on optimization process is performed to determine die curvatures for a locking nut’s flange folding process which has highly nonlinear material behaviour. The nut material is AISI C1040 steel.
Ülüver Bozkurt, İlyas Kacar
doaj   +1 more source

Identification of nonlinear kinematic hardening parameters for sheet metal from biaxial loading tests [PDF]

, 2017
In this work an anisotropic material model at finite strains with nonlinear mixed (isotropic and kinematic) hardening is used for the identification of the hardening parameters of sheet steel.
Söhngen, B., Willner, K.
core  

Validated prediction of weld residual stresses in austenitic steel pipe girth welds before and after thermal ageing, Part 2: modelling and validation [PDF]

, 2019
An extensive finite element simulation campaign was undertaken to examine the complete manufacturing history and high temperature thermal ageing of thick-walled girth-welded austenitic steel pipes fabricated from Esshete 1250 austenitic steel.
Austin, Bate, Bendeich, Bouchard, Bouchard, Bouchard, Bouchard, Dong, Dong, Dong, Dong, Dong, Dong, Dong, Fredette, Hamelin, Hurrell, J. Mathew, Janosch, Lemaitre, Lindgren, Lindgren, Lindström, M.C. Smith, Mahmoudi, Marlette, Muransky, Muransky, Muransky, Muransky, O. Muransky, Prime, Qingrong Xiong, Rathbun, Smith, Smith, Smith, Smith, Smith, Smith, Smith, Smith, Smith, Smith, Smith, Smith, Smith, Smith, Smith, Smith, Truman, Vaughn, Withers, Withers, Yaghi, Yaghi   +55 more
core   +1 more source