Results 21 to 30 of about 207,558 (286)

An implicit staggered algorithm for CPFEM-based analysis of aluminum [PDF]

open access: yesJournal of Theoretical, Computational and Applied Mechanics
In this paper, we propose an implicit staggered algorithm for crystal plasticity finite element methodwhich makes use of dynamic relaxation at the constitutive integration level.
Pedro Areias   +3 more
doaj   +1 more source

On shakedown, ratchet and limit analysis of defective pipeline [PDF]

open access: yes, 2012
In this study, the limit load, shakedown and ratchet limit of a defective pipeline subjected to constant internal pressure and a cyclic thermal gradient are analyzed.
Chen   +17 more
core   +1 more source

Microstructure Evolution and Mechanical Properties of Austenite Stainless Steel with Gradient Twinned Structure by Surface Mechanical Attrition Treatment

open access: yesNanomaterials, 2021
Gradient structures in engineering materials produce an impressive synergy of strength and plasticity, thereafter, have recently attracted extensive attention in the material families.
Aiying Chen   +4 more
doaj   +1 more source

Numerical simulation of ratcheting and fatigue behaviour of mitred pipe bends under in-plane bending and internal pressure [PDF]

open access: yes, 2013
This paper investigates the ratcheting and fatigue behaviour of 90 degree single unreinforced mitred pipe bends subjected to a cyclic in-plane closing moment with a non-zero mean value and constant internal pressure. An experiment was conducted to induce
Hamilton, Robert   +3 more
core   +1 more source

Numerical modelling of ductile damage mechanics coupled with an unconventional plasticity model [PDF]

open access: yesFracture and Structural Integrity, 2016
Ductility in metals includes the material’s capability to tolerate plastic deformations before partial or total degradation of its mechanical properties.
R. Fincato, S. Tsutsumi
doaj   +3 more sources

A simplified creep-reverse plasticity solution method for bodies subjected to cyclic loading [PDF]

open access: yes, 2004
An extension of the upper bound shakedown theorem to load histories in excess of shakedown has been applied recently to the evaluation of a ratchet limit and the varying plastic strain magnitudes associated with a varying residual stress field. Solutions
Chen, Haofeng, Ponter, Alan R.S.
core   +1 more source

Application of the multi-laminate sub-loading surface model in the simulation of a pipe-jacking operation [PDF]

open access: yesNumerical Methods in Civil Engineering, 2014
In this paper a constitutive model formulated in the framework of multi-laminate models is applied to analyze pipe-jacking processes. The multi-laminate -based models consider various integration planes to formulate the stress-strain relationship.
S.A. Ghoreishian Amiri
doaj   +1 more source

Quantifying the Contribution of Crystallographic Texture and Grain Morphology on the Elastic and Plastic Anisotropy of bcc Steel [PDF]

open access: yes, 2019
The influence of grain shape and crystallographic orientation on the global and local elastic and plastic behaviour of strongly textured materials is investigated with the help of full-field simulations based on texture data from electron backscatter ...
Bruder, E., Diehl, M., Niehuesbernd, J.
core   +1 more source

Extension of a multi-surface plasticity model to two-phase materials

open access: yesInternational Journal of Solids and Structures, 2007
AbstractThe work reported in this paper is part of the ongoing research on the development of suitable elastic–plastic constitutive models for multiphase materials. This paper is concerned with the application of an elastic–plastic constitutive model based on the Mróz-multi-surface kinematic hardening rule to particulate metal matrix composites (PMMCs).
Owolabi, G.M., Singh, M.N.K.
openaire   +1 more source

A hysteretic multiscale formulation for nonlinear dynamic analysis of composite materials [PDF]

open access: yes, 2014
This article has been made available through the Brunel Open Access Publishing Fund.A new multiscale finite element formulation is presented for nonlinear dynamic analysis of heterogeneous structures.
A Chopra   +55 more
core   +3 more sources

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