Results 21 to 30 of about 24,982 (347)

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

, 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., Cordovilla, F., Fitzpatrick, M. E., García-Beltrán, A., Langer, K., Ocaña, J. L., Smyth, N. S.   +6 more
core   +1 more source

Springback prediction of magnesium alloy sheet with nonlinear combined hardening

工程科学学报, 2017
Springback is regarded as one of the main defects that occur in sheet-metal forming processes. Therefore, improving its prediction accuracy, especially under highly nonlinear conditions, is important for researchers. In this paper, constitutive equations
ZHAO Xiao-di, YUE Zhen-ming, GAO Jun, CHU Xing-rong   +3 more
doaj   +1 more source

On stress resultant plasticity and viscoplasticity for metal plates [PDF]

, 2008
In this work we derive elastoplastic and elastoviscoplastic finite element formulations for stress resultant bending analysis of thin metal plates. The principle of maximum plastic dissipation is used to obtain the ingredients of the small strain stress ...
Brank, Boštjan, Dujc, Jaka
core   +1 more source

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

Fundamentals of kinematic hardening hyperplasticity

International Journal of Solids and Structures, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Puzrin, A, Houlsby, G
openaire   +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

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

Evaluation of constitutive models for springback prediction in U-draw/bending of DP and TRIP steel sheets [PDF]

, 2011
U-draw/bending experiments and simulations were performed to investigate the characteristics of springback in sheet metals. The finite element method is frequently used for the simulation of springback, but the predictions are strongly influenced by the ...
Barlat Frederic Gerard, Lee J.Y., Lee M.-G., Barlat F.   +1 more
core   +1 more source

A viscoplasticity model with an enhanced control of the yield surface distortion

, 2012
A new model of metal viscoplasticity, which takes combined isotropic, kinematic, and distortional hardening into account, is presented. The basic modeling assumptions are illustrated using a new two-dimensional rheological analogy.
Ihlemann, J., Shutov, A. V.
core   +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