Results 21 to 30 of about 4,725 (290)

Single Cell Mechanics: Stress Stiffening and Kinematic Hardening [PDF]

Physical Review Letters, 2008
Cell mechanical properties are fundamental to the organism but remain poorly understood. We report a comprehensive phenomenological framework for the nonlinear rheology of single fibroblast cells: a superposition of elastic stiffening and viscoplastic kinematic hardening.
Fernández, Pablo, Ott, Albrecht
openaire   +3 more sources

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

Evaluating the effectiveness of combined hardening models to determine the behavior of a plate with a hole under combined loadings

European Mechanical Science, 2022
Geometrical discontinuities in a material such as holes and notches on machine elements are called as critical regions due to the stress concentrations. They are the potential failure initiation locations Therefore, researchers put significant effort on ...
Toros Arda Akşen, Melih Çaylak, Mehmet Fırat   +2 more
doaj   +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

Effect of kinematic hardening on localized necking in substrate-supported metal layers [PDF]

, 2015
Necking limit prediction in thin substrate-supported metal layers, used as functional components in electronic devices, represents nowadays an ambitious challenge.
ABED-MERAIM, Farid, BEN BETTAIEB, Mohamed   +1 more
core   +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

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

Stress integration method for a nonlinear kinematic/isotropic hardening model and its characterization based on polycrystal plasticity

, 2009
Sheet metal forming processes generally involve non-proportional strain paths including springback, leading to the Bauschinger effect, transient hardening, and permanent softening behavior, that can be possibly modeled by kinematic hardening laws.
Yoon, Jeong Whan, Cardoso, Rui P.R.
core   +1 more source

Solid‐State Diffusion and Intermetallic Phase Formation in Roll‐Bonded Mg–Zn Composites With Kirigami‐Patterned Inlay

Advanced Engineering Materials, EarlyView.
Mg–Zn composites with a thickness of 0.21 mm were fabricated using roll bonding of a kirigami‐patterned Mg alloy inlay within a Zn matrix. Thermal activation following this process led to the formation of tailored intermetallic structures, which provided the composite with enhanced flexural strength.
Yaroslav Frolov, Oleksandr Bobukh, Christian Klose, Florian Nürnberger, Hans Jürgen Maier   +4 more
wiley   +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