scholarly journals Grain shape effects on the mechanical behavior of compacted earth

2019 ◽  
Vol 11 ◽  
pp. e00303
Author(s):  
A. Koutous ◽  
E. Hilali
Keyword(s):  
Mechanical Behavior ◽  
Grain Shape ◽  
Shape Effects

Effects of the grain shape and crystallographic texture on the grain-scale mechanical behavior of additively manufactured aluminum alloys

2021 ◽  
pp. 102415
Author(s):  
V. Romanova ◽  
O. Zinovieva ◽  
R. Balokhonov ◽  
E. Dymnich ◽  
E. Moskvichev ◽  
...  
Keyword(s):  
Aluminum Alloys ◽  
Mechanical Behavior ◽  
Crystallographic Texture ◽  
Grain Shape

Grain shape effects on dielectric and electrical properties of rocks

Geophysics ◽  
1984 ◽  
Vol 49 (5) ◽  
pp. 586-587 ◽  
Author(s):  
P. N. Sen
Keyword(s):  
Grain Shape ◽  
Angular Frequency ◽  
Dc Conductivity ◽  
Dielectric Constants ◽  
Water Conductivity ◽  
Depolarization Factor ◽  
The Matrix ◽  
Shape Effects ◽  
Dielectrical Properties ◽  
The Right

Recently there has been a considerable interest in the effect of anisotropy in the grain shape in the electrical and dielectrical properties of rocks and other inhomogeneous media (Sen 1981a, b; Sen et al, 1981; Mendelson and Cohen, 1982; and Kenyon, 1983). In this note I point out that equation (34) of Mendelson and Cohen (MC) is incorrect. The dc limit of MC equation (34) for the conductivity of rock σ, in terms of porosity ϕ and water conductivity [Formula: see text], gives [Formula: see text] or [Formula: see text] where [Formula: see text] L is the depolarization factor along the principal axis of spheroidal grain and 〈 〉 denotes an average over the distribution in L. This value of [Formula: see text] is in disagreement with the correct value of m in equation (28) of MC [equation (6) below]. [When the sign mistakes in equations MC (33)–(34) are corrected, [Formula: see text]. This agrees with equation (6) below for the case when L has a single value and averaging is redundant.] This inconsistency arises from an incorrect replacement of the inverse of an average in MC equation (33) by an average of inverses. The corrected form of MC equation (33) is [Formula: see text] where ε and [Formula: see text] are the dielectric constants of the mixture and of the matrix, respectively. The dielectric constant [Formula: see text] is complex, [Formula: see text] is real, [Formula: see text] is the permittivity of vacuum, σ the conductivity, ω the angular frequency. The last factor in the right‐hand side of the equation was replaced incorrectly by the average of the inverse, which is incorrect in general. Note that in the dc limit equation (4) above gives [Formula: see text] and, by integration, [Formula: see text] where [Formula: see text] is the dc conductivity of water, σ(0) is the dc conductivity of formation, and [Formula: see text]

Grain shape effects on the slip system activity and on the lattice rotations

1986 ◽  
Vol 34 (11) ◽  
pp. 2139-2149 ◽  
Author(s):  
S. Tiem ◽  
M. Berveiller ◽  
G.R. Canova
Keyword(s):  
Slip System ◽  
Grain Shape ◽  
System Activity ◽  
Shape Effects

Grain Shape Effects on Settling Rates

1978 ◽  
Vol 86 (2) ◽  
pp. 193-209 ◽  
Author(s):  
P. D. Komar ◽  
C. E. Reimers
Keyword(s):  
Grain Shape ◽  
Shape Effects ◽  
Settling Rates

Grain Shape Effects on Permeability, Formation Factor, and Capillary Pressure from Pore-Scale Modeling

2013 ◽  
Vol 102 (1) ◽  
pp. 71-90 ◽  
Author(s):  
T. Torskaya ◽  
V. Shabro ◽  
C. Torres-Verdín ◽  
R. Salazar-Tio ◽  
A. Revil
Keyword(s):  
Capillary Pressure ◽  
Grain Shape ◽  
Pore Scale ◽  
Formation Factor ◽  
Scale Modeling ◽  
Pore Scale Modeling ◽  
Shape Effects

Grain Shape Effects on Settling Rates: A Discussion

1980 ◽  
Vol 88 (2) ◽  
pp. 243-245 ◽  
Author(s):  
N. C. Janke
Keyword(s):  
Grain Shape ◽  
Shape Effects ◽  
Settling Rates

Impedance/Dielectric Spectroscopy of Electroceramics?Part 2: Grain Shape Effects and Local Properties of Polycrystalline Ceramics

2005 ◽  
Vol 14 (3) ◽  
pp. 293-301 ◽  
Author(s):  
N. J. Kidner ◽  
Z. J. Homrighaus ◽  
B. J. Ingram ◽  
T. O. Mason ◽  
E. J. Garboczi
Keyword(s):  
Dielectric Spectroscopy ◽  
Grain Shape ◽  
Polycrystalline Ceramics ◽  
Shape Effects ◽  
Local Properties

Effects of Grain Shape on Mechanical Behavior of Granular Materials Using DEM Analysis

2021 ◽  
Author(s):  
Byeong-Su Kim ◽  
Tatsuo Sakakibara ◽  
Seong-Wan Park ◽  
Shoji Kato
Keyword(s):  
Mechanical Behavior ◽  
Granular Materials ◽  
Grain Shape ◽  
Dem Analysis
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