Fracture model of brittle and quasibrittle materials and geomediaPhysical Mesomechanics - Tập 16 - Trang 207-226 - 2013
P. V. Makarov, M. O. Eremin
A general model and a unified mathematical formalism are proposed for description of inelastic deformation and fracture of any solids, where brittle or plastic, as their evolution in effective force fields. Loaded solids and media are considered as nonlinear dynamic systems. One of the main tasks of the work is to show that if deformation and fracture of a strong medium is treated as its evolution...... hiện toàn bộ
Modeling of Plastic Deformation Based on the Theory of an Orthotropic Cosserat ContinuumPhysical Mesomechanics - Tập 23 - Trang 223-230 - 2020
V. M. Sadovskii, M. A. Guzev, O. V. Sadovskaya, Ch. Qi
In the paper, the plastic deformation
of heterogeneous materials is analyzed by direct numerical
simulation based on the theory of an elastic-plastic orthotropic
Cosserat continuum, with the plasticity condition taking into
account both the shear and rotational mode of irreversible
deformation. With the assumption of a block structure of a
material with elastic ...... hiện toàn bộ
Nondestructive Magnetic Monitoring of Residual Stresses in a Medical Ti–6Al–4V–ELI Alloy Using a Fluxgate SensorPhysical Mesomechanics - Tập 23 - Trang 160-166 - 2020
H. Carreón, M. L. Carreon, M. Carreon-Garcidueñas
Attempts to improve the osteointegration,
fixation and stability of Ti-base implants have been focused by
producing a significative surface roughness that enhances the surface
area available for bone/
implant apposition. In this research study, it shows the experimental
data by synchrotron radiation X-ray diffraction (SR-XRD) of the main
material surface properties (residual stress and cold work) ...... hiện toàn bộ
Influence of the size and concentration of soft-phase inclusion agglomerates on ceramic specimen strengthPhysical Mesomechanics - Tập 19 - Trang 182-188 - 2016
A. I. Dmitriev, S. P. Buyakova, S. N. Kulkov
The paper is a theoretical study into the influence of the content and distribution of soft-phase inclusion agglomerates in the matrix of a ceramic composite specimen on its strength and deformation properties. The movable cellular automata method was used to simulate uniaxial compression of two-dimensional composite material specimens with an aspect ratio of 1:1. It is found that the strength and...... hiện toàn bộ
Autosoliton View of the Seismic Process. Part 2. Possibility of Generation and Propagation of Slow Deformation Autosoliton Disturbances in GeomediaPhysical Mesomechanics - Tập 24 - Trang 375-390 - 2021
P. V. Makarov, I. Yu. Smolin, Yu. A. Khon, M. O. Eremin, R. A. Bakeev, A. Yu. Peryshkin, V. A. Zimina, A. Chirkov, A. A. Kazakbaeva, A. Zh. Akhmetov
In the autosoliton view, the complete mathematical model of the seismic
process taken as the deformation and fracture process of a loaded geomedium
combines dynamic equations of solid mechanics and specific constitutive
equations for geomedium rheology. These equations describe both the conventional
stress-strain evolution due to the stress wave propagation with sound
velo...... hiện toàn bộ
Experimental Study of High Temperature Fracture Behavior of A286 Superalloy at 650°CPhysical Mesomechanics - - 2018
M. Hagh Panahi, H. Pirali
In this paper an experimental work is done for investigation of high temperature fracture properties of A286 superalloy at 650°C. Stress intensity factor K and parameter C* for this superalloy are determined experimentally. For estimation of these parameters, an instrument is developed for investigation of high temperature fracture properties. For estimation of stress intensity factor, compliance ...... hiện toàn bộ
Effect of Hydrogen Charging on Mechanical Twinning, Strain Hardening, and Fracture of ‹111› and ‹144› Hadfield Steel Single CrystalsPhysical Mesomechanics - Tập 21 - Trang 263-273 - 2018
E. G. Astafurova, G. G. Maier, E. V. Melnikov, V. A. Moskvina, V. F. Vojtsik, G. N. Zakharov, A. I. Smirnov, V. A. Bataev
This paper studies the effect of electrolytic hydrogen charging on the plastic deformation and fracture of Hadfield steel single crystals oriented for tension along the ‹111› and ‹144› directions, which the major deformation mechanism is mechanical twinning. Electrolytic hydrogen charging for five hours at a current density of 100 A/m2 slightly affects the stages of plastic flow, deformation mecha...... hiện toàn bộ