Results 21 to 30 of about 35,760 (296)

A mathematical model for the magnetorheological materials and magneto reheological devices

open access: yesEngineering Science and Technology, an International Journal, 2018
In this study, the behaviour of MR fluid has been systematically investigated within the scope of continuum mechanics. The necessary balance equations have been written for a continuous medium which takes place in the electromagnetic field.
Koray Özsoy, Mustafa Reşit Usal
doaj   +1 more source

Implicit integration scheme for porous viscoplastic potential-based constitutive equations [PDF]

open access: yes, 2011
This paper deals with a viscoplastic potential-based model allowing thermomechanical damage behavior modeling of porous materials. The model describes rate dependent effects, hardening, creep as well as defects coalescence and propagation.
Msolli, S.   +11 more
core   +1 more source

Computational Rheology with Integral Constitutive Equations

open access: yesApplied Rheology, 1999
Computational rheology deals with the formulation and solution of constitutive equations for non-Newtonian materials. From these the emphasis is put on polymeric materials, which exhibit both viscous and elastic behaviour in flow and deformation.
Mitsoulis Evan
doaj   +1 more source

Review of Creep Cavitation and Rupture of Low Cr Alloy and its Weldment [PDF]

open access: yes, 2013
This paper presents a review of creep cavitation and rupture of low Cr alloy and its weldment, particular in the heat-affected zone (HAZ). Creep damage is one of the serious problems for the high temperature industry.
Xu, Qiang   +6 more
core   +1 more source

Structure and Calibration of Constitutive Equations for Granular Soils

open access: yesStudia Geotechnica et Mechanica, 2015
The form of incremental constitutive equations for granular soils is discussed for the triaxial configuration. The classical elasto-plastic approach and the semi-empirical model are discussed on the basis of constitutive relations determined directly ...
Sawicki Andrzej   +2 more
doaj   +1 more source

Modelling, identification and application of phenomenological constitutive laws over a large strain rate and temperature range [PDF]

open access: yes, 2013
A review of the different phenomenological thermo-viscoplastic constitutive models often applied to forging and machining processes is presented. Several of the most common models have been identified using a large experimental database (Hor et al., 2013)
GERMAIN, Guénaël   +3 more
core   +1 more source

Material constitutive behaviour and microstructure study on aluminium alloys for friction stir welding [PDF]

open access: yes, 2010
The material constitutive behaviour and microstructure of Aluminium alloys 6082 and 7449 were studied with the Gleeble hot compression test. The novel aspect of the work is that the testing was done at high strain-rates and at temperatures within 5 K ...
Colegrove, Paul A.   +4 more
core   +1 more source

Stress Relaxation Behaviour and Creep Constitutive Equations of SA302Gr.C Low-Alloy Steel

open access: yesHigh Temperature Materials and Processes, 2018
In order to study the stress relaxation behaviour of SA302Gr.C low-alloy steel, the stress relaxation experiments were performed at the temperatures of 400, 500 and 620 °C with the constant strain of 0.5 %.
Shen Wenfei   +4 more
doaj   +1 more source

On Micro-Damage in Hot Metal Working Part 2: Constitutive Modelling

open access: yesEngineering Transactions, 2014
Damage constitutive equations are formulated to model the evolution of grain boundary and plasticity-induced damage for free-cutting steels under hot forming conditions.
J. LIN   +4 more
doaj   +1 more source

Benchmarking of implicit numerical integration methods for stiff unified constitutive equations in metal forming applications

open access: yesCogent Engineering
Unified constitutive equations have been developed to model the behaviour of metallic materials under various processing conditions. These constitutive equations usually take the form of a set of ordinary differential equations (ODEs), which must be ...
James Dear   +3 more
doaj   +1 more source

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