Results 11 to 20 of about 20,611 (249)

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

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

Development of constitutive equations for hot working of titanium matrix composites [PDF]

MATEC Web of Conferences, 2020
This research is devoted to modelling the viscoplastic deformation behaviour and microstructure evolution of particle reinforced titanium matrix composites (TMCs) at hot working conditions.
Du Lihua, Shi Zhusheng, Han Yuanfei, Shao Jie, Zheng Kailun, Li Yong, Lu Weijie   +6 more
doaj   +1 more source

On the Out-of-Plane Deviation of Bending Deformation States in Moderately Thick Bars with Asymmetric Cross-Sections

Engineering Transactions
A characteristic feature of the six-parameter theories of bars is the coupled form of the constitutive equations; in particular the equations linking transverse forces with transverse shear deformations cannot be, in general, decoupled while keeping a ...
Radosław Czubacki, Zofia Kozyra, Tomasz Lewiński   +2 more
doaj   +1 more source

Generalized diffusion theory of micromorphicly deformable particle-fluid continuum and bubble-liquid two-phase flows

Vietnam Journal of Mechanics, 1993
In the paper [1] the basic concepts and equations were derived for the micromorphicly deformable particle-fluid two-phase flows, the constitutive equations have been constructed.
Nguyen Van Diep
doaj   +1 more source

Mixed FEM for Shells of Revolution Based on Flow Theory and its Modifications

Structural Mechanics of Engineering Constructions and Buildings
For describing elastoplastic deformation, three versions of constitutive equations are used. The first version employs the governing equations of the flow theory.
Rumia Z. Kiseleva, Natalia A. Kirsanova, Anatoliy P. Nikolaev, Yuriy V. Klochkov, Vitaliy V. Ryabukha   +4 more
doaj   +1 more source

Measurable Residual Disease Monitoring During Treatment for Pediatric Acute Myeloid Leukemia in First Relapse

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Survival after relapse in pediatric acute myeloid leukemia (AML) remains poor, highlighting the critical importance of identifying prognostic factors to guide optimal relapse management. Methods We investigated the prognostic impact of multiparameter flow cytometry (MFC) measurable residual disease (MRD) in 188 patients with first ...
Camilla Poulsen, Kristian Juul Sandahl, Lene Karlsson, Jonas Abrahamsson, Nira Arad‐Cohen, Daniel Cheuk, Barbara De Moerloose, Linda Fogelstrand, Jose Maria Fernandez Navarro, Bianca F. Goemans, Kirsi Jahnukainen, Gertjan Kaspers, Zhanna Kovalova, Monica Cheng Munthe‐Kaas, Ulrika Norén‐Nyström, Josefine Palle, Ramune Pasauliene, Cornelis Jan Pronk, Kadri Saks, Anne Tierens, Henrik Hasle, Kristian Løvvik Juul‐Dam   +21 more
wiley   +1 more source

Constitutive memory equations for auxetic materials

Mathematical Modelling and Analysis
In this note we suggest a set of constitutive equations for anelastic materials whose internal structure can present anomalous variations resulting from external effects of tension/compression, as in auxetic media. For these problems we require of a new
Michele Caputo, Vittorio Ruggiero
doaj   +1 more source