Results 241 to 250 of about 2,401,267 (288)

A criterional evaluation of the fatigue strength of metals

Strength of Materials, 1973
It is most proper and basically sound to use the characteristics of inelasticity for a criterional rating of the fatigue strength of metals. This has been confirmed by much experimental data which agrees with some of the existing criteria both for low and for high loading frequencies [I].
I. M. Vasinyuk, L. A. Khamaza
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Study on strength criterion for frozen soil

Cold Regions Science and Technology, 2019
Abstract It is established that the strength of frozen soil exhibits apparent nonlinearity in the p–q plane. As the mean stress p increases, in certain experimental conditions, the strength of frozen soil increases rapidly and then reduces gradually; however, in certain other conditions, the strength increases gradually and then reduces rapidly.
Xingyan Liu, Enlong Liu, De Zhang, Ge Zhang, Bingtang Song   +4 more
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Empirical Strength Criterion for Rock Masses

Journal of the Geotechnical Engineering Division, 1980
An empirical strength criterion for rocks and rock masses is proposed. The nonlinear criterion includes the uniaxial compressive strength of the intact rock material and introduces two dimensionless parameters, m and s. The parameter m varies with rock type, the angle of interblock or interparticle friction and the degree of block or particle interlock.
Evert Hoek, Edwin T. Brown
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Fatigue Strength as a Design Criterion

SAE Technical Paper Series, 1970
<div class="htmlview paragraph">The major factor determining the fatigue life of a welded structure under a given loading is the configuration of the weldments. The selection of various steel types and welding processes are considered to be secondary influences on the fatigue strength.
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Dynamic Strength Criterion for Concrete

Journal of Engineering Mechanics, 2004
An integral dynamic strength criterion for concrete is proposed, which accounts for the short duration stress history in the range idealized as elastic. The concept of critical value of generalized stress impulse, proposed by Campbell for steel, was applied to concrete.
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Structurally heterogeneous material strength criterion

Strength of Materials, 1993
We present the results of experimental and theoretical studies of the limit surface shape for a filled elastic polymer of heterogeneous structure. The construction of the strength criterion for the studied material is realized by a semiempirical method, analogous to the Mohr theory. The limit surface is approximated by two trihedral pyramids, narrowing
A. E. Kalinnikov, M. G. Kurguzkin, A. V. Shushkov   +2 more
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Strength coefficients of the cubic criterion for graphite composites

Journal of Materials Science, 1989
On presente les methodes de determination des coefficients et de l'enveloppe de resistance mecanique du graphite dans un etat de contrainte biaxiale en reliant le critere de resistance cubique aux donnees experimentales.
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A strength criterion for frozen moraine soils

Cold Regions Science and Technology, 2019
Abstract The strength behavior of frozen soils has been extensively investigated in frozen soils mechanics for many years. In order to study the strength properties of frozen moraine soils, a series of cryogenic tri-axial compression tests are carried out under confining pressures ranging from 0.5 MPa to 16 MPa at the temperatures of −0.5 °C, −2.0 °C
Fei Luo, Enlong Liu, Zhanyuan Zhu
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An empirical strength criterion for heterogeneous tuff

Engineering Geology, 1992
Abstract An empirical failure criterion is formulated by expressing the second invariant of stress deviation at failure as a function of the first invariant of stress, key parameter, and volume. Strength data from Apache Leap tuff specimens are analyzed as a demonstration example.
Kittitep Fuenkajorn, Jaak J.K. Daemen
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A statistical strength criterion for brittle materials

Strength of Materials, 2011
Based on a probabilistic model of brittle microfracture (microdamage) leading to macrofracture of materials, we propose a statistical interpretation of strength criteria, which relate start of macrofracture (manifested by macrocrack formation in tension or internal structure stability loss in compression) with attainment of a certain (critical) value ...
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