The theoretical shear strength of fcc crystals under superimposed triaxial stress

2010 ◽  
Vol 58 (8) ◽  
pp. 3117-3123 ◽  
Author(s):  
M. Černý ◽  
J. Pokluda
Keyword(s):  
Shear Strength ◽  
Triaxial Stress ◽  
Theoretical Shear Strength

Theoretical shear strength and the onset of plasticity in nanodeformation of cubic boron nitride

2017 ◽  
Vol 39 (2) ◽  
pp. 88-98 ◽  
Author(s):  
S. N. Dub ◽  
I. A. Petrusha ◽  
V. M. Bushlya ◽  
T. Taniguchi ◽  
V. A. Belous ◽  
...  
Keyword(s):  
Shear Strength ◽  
Boron Nitride ◽  
Cubic Boron Nitride ◽  
Theoretical Shear Strength

The mechanical behavior of a passivating surface under potentiostatic control

1997 ◽  
Vol 12 (12) ◽  
pp. 3345-3353 ◽  
Author(s):  
D. F. Bahr ◽  
J. C. Nelson ◽  
N. I. Tymiak ◽  
W. W. Gerberich
Keyword(s):  
Plastic Deformation ◽  
Shear Strength ◽  
Sulfuric Acid ◽  
Material Removal ◽  
Iron Alloy ◽  
Thermally Grown Oxide ◽  
Silicon Single Crystal ◽  
Passive Films ◽  
Theoretical Shear Strength ◽  
Elastic Loading

Continuous microindentation has been carried out on an iron–3% silicon single crystal in 1 M sulfuric acid. The ability of the material to support elastic loading is directly linked to the presence of thermally grown oxide films and passive films applied through potentiostatic control of the sample. When the passive film is removed, either by chemical or electrochemical means, the iron alloy can no longer sustain pressures on the order of the theoretical shear strength of iron. Instead, the metal behaves in a traditional elastic-plastic manner when no film is present. The oxide film at the edges of the indentation can sustain applied tensile stresses up to 1.2 GPa prior to failure. Indentation in materials undergoing dissolution must account for the rate of material removal over the remote surface and the resulting plastic deformation around the contact of the indentation.

scholarly journals Influence of the supplementary reinforcement on the shear strength of beams with prefabricated truss stirrups

2022 ◽  
Vol 15 (1) ◽  
Author(s):  
Rosângela Silva Pinto ◽  
Vanessa Carolaine Sousa ◽  
Luamim Sales Tapajós ◽  
Maurício de Pina Ferreira ◽  
Aarão Ferreira Lima Neto
Keyword(s):  
Shear Strength ◽  
Reinforced Concrete ◽  
Experimental Tests ◽  
Experimental Results ◽  
Shear Reinforcement ◽  
Theoretical Shear Strength ◽  
Safety Level ◽  
Eurocode 2 ◽  
Wide Beams ◽  
Concrete Elements

abstract: This paper presents the results of seven experimental tests in reinforced concrete wide beams, aiming to investigate their performance when subjected to shear, using prefabricated truss stirrups as shear reinforcement, as well as a supplementary reinforcement to control cracks by delamination. The main analysed variables were: position of the supplementary reinforcement, inclination of the shear reinforcement, and spacing between stirrups. Results showed that strength increments of up to 142% were obtained using the prefabricated truss stirrups. Furthermore, the experimental results were compared with the theoretical shear strength estimates of the tested beams, following the recommendations of NBR 6118 (2014), Eurocode 2 (2004), and ACI 318 (2014), in order to evaluate the safety level of these codes when designing concrete elements subjected to shear with the reinforcement used in this paper.

scholarly journals Estimate of theoretical shear strength of C60 single crystal by nanoindentation

2021 ◽  
Vol 56 (18) ◽  
pp. 10905-10914
Author(s):  
Sergey N. Dub ◽  
Cetin Haftaoglu ◽  
Vitaliy M. Kindrachuk
Keyword(s):  
Shear Strength ◽  
Single Crystal ◽  
Shear Stresses ◽  
Slip Systems ◽  
Berkovich Indenter ◽  
Element Analysis ◽  
Theoretical Shear Strength ◽  
Elastic Loading ◽  
Octahedral Slip ◽  
Realistic Geometry

AbstractThe onset of plasticity in a single crystal C60 fullerite was investigated by nanoindentation on the (111) crystallographic plane. The transition from elastic to plastic deformation in a contact was observed as pop-in events on loading curves. The respective resolved shear stresses were computed for the octahedral slip systems $$\langle{01}\overline{1}\rangle\left\{ {{111}} \right\}$$ ⟨ 01 1 ¯ ⟩ 111 , supposing that their activation resulted in the onset of plasticity. A finite element analysis was applied, which reproduced the elastic loading until the first pop-in, using a realistic geometry of the Berkovich indenter blunt tip. The obtained estimate of the C60 theoretical shear strength was about $${1}/{11}$$ 1 / 11 of the shear modulus on {111} planes. Graphical abstract

scholarly journals Erratum to: “Theoretical shear strength of BCC and HCP Metals”

2014 ◽  
Vol 56 (8) ◽  
pp. 1717-1717
Author(s):  
K. A. Bukreeva ◽  
A. M. Iskandarov ◽  
S. V. Dmitriev ◽  
Y. Umeno ◽  
R. R. Mulyukov
Keyword(s):  
Shear Strength ◽  
Theoretical Shear Strength
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