Results 11 to 20 of about 157,229 (275)

Cyclic constitutive equations of rock with coupled damage induced by compaction and cracking

International Journal of Mining Science and Technology, 2022
In this paper, the cyclic constitutive equations were proposed to describe the constitutive behavior of cyclic loading and unloading. Firstly, a coupled damage variable was derived, which contains two parts, i.e., the compaction-induced damage and the ...
Chonghong Ren, Jin Yu, Xueying Liu, Zhuqing Zhang, Yanyan Cai   +4 more
doaj   +3 more sources

Constitutive Relationship Proposition of Marine Soft Soil in Korea Using Finite Strain Consolidation Theory

Journal of Marine Science and Engineering, 2020
This paper proposes representative constitutive relationship equations of dredging and reclamation soft soil in Korea. The marine soft soils were sampled at 23 dredged-reclaimed construction sites in the Busan, Gwangyang, and Incheon regions in Korea ...
Sang Hyun Jun, Hyuk Jae Kwon
doaj   +1 more source

On Galilean invariance and nonlinearity in electrodynamics and quantum mechanics [PDF]

, 2000
Recent experimental results on slow light heighten interest in nonlinear Maxwell theories. We obtain Galilei covariant equations for electromagnetism by allowing special nonlinearities in the constitutive equations only, keeping Maxwell's equations ...
Barut, Brown, Doebner, Doebner, Dombey, Dyson, Fushchich, Fushchich, Gerald A. Goldin, Goldin, Hughes, Jackson, Le Bellac, Marangos, Mavromatos, Vaidya, Vanderlinde, Vladimir M. Shtelen   +17 more
core   +2 more sources

Computational Rheology with Integral Constitutive Equations

Applied 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

A mathematical model for the magnetorheological materials and magneto reheological devices

Engineering 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

Structure and Calibration of Constitutive Equations for Granular Soils

Studia 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, Sławińska Justyna, Mierczyński Jacek   +2 more
doaj   +1 more source

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

Engineering 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, A. D. FOSTER, Y. LIU, D. C. J. FARRUGIA, T. A. DEAN   +4 more
doaj   +1 more source

Enskog Theory for Polydisperse Granular Mixtures. I. Navier-Stokes order Transport [PDF]

, 2007
A hydrodynamic description for an $s$-component mixture of inelastic, smooth hard disks (two dimensions) or spheres (three dimensions) is derived based on the revised Enskog theory for the single-particle velocity distribution functions.
Christine M. Hrenya, E. C. Rericha, I. Pagonabarraga, J. F. Lutsko, J. Ferziger, J. T. Jenkins, James W. Dufty, M. Alam, M. Pell, N. Dunford, T. M. Knowlton, T. P. C. van Noije, Vicente Garzó, Y. Y. Lee   +13 more
core   +1 more source

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

Cogent 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, Ruiqiang Zhang, Zhusheng Shi, Jianguo Lin   +3 more
doaj   +1 more source

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

High 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, Zhang Chi, Zhang Liwen, Yang Yang, Zhu Zhi   +4 more
doaj   +1 more source