Results 221 to 230 of about 8,649 (263)
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Materials Science and Engineering: A, 2014
Abstract In the present paper, we show that the uniaxial creep data (i.e., applied stress, σ, and creep rate, e c ) can be extracted using a set of conversion coefficients (C1 and C2) obtained from indentation data (i.e., the constant indentation pressure, ps, and constant indentation creep rate, e s ) which results in
Hidenari Takagi, Masami Fujiwara
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Abstract In the present paper, we show that the uniaxial creep data (i.e., applied stress, σ, and creep rate, e c ) can be extracted using a set of conversion coefficients (C1 and C2) obtained from indentation data (i.e., the constant indentation pressure, ps, and constant indentation creep rate, e s ) which results in
Hidenari Takagi, Masami Fujiwara
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High-Frequency Contact Mechanics: The Derivation of Frequency-Dependent Creep Coefficient
Proceedings of the Institution of Mechanical Engineers, Part C: Mechanical Engineering Science, 1984Kalker's creep coefficients for linear rolling contact problems are only valid in the steady state case. An approximate method for the extension of linear contact mechanics into the high-frequency range is ...
K Knothe, A Gross-Thebing
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The correlation between the power-law coefficients in creep: the temperature dependence
Journal of Materials Science, 1998In this study we investigated the relationship between the coefficients of the Norton law for low-stress high-temperature deformation results of different materials reported in the literature. These coefficients are interrelated and it is shown that this relation can be theoretically deduced from the assumption of a variation of the activation area ...
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The influence of fluid elasticity on the drag coefficient for creeping flow around a sphere
Journal of Non-Newtonian Fluid Mechanics, 1980Drag coefficients are measured for the creeping motion of a sphere in nonshear-thinning elastic fluids. The data obtained cover a Weissenberg number range of 1.66 × 10−4 to 2.02. For 0 ⩽ We ⩽ 0.1 no significant deviation from the Stokes drag is observed as a result of fluid elasticity.
R.P. Chhabra, P.H.T. Uhlherr, D.V. Boger
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Analytical derivation of the effective creep coefficients for timber-concrete composite structures
Engineering Structures, 2018Abstract The limitation of the deflection in the long term is often a governing condition when designing timber-concrete composite structures. In order to calculate the long term deflection, the creep deformation is often described by means of creep coefficients. These coefficients are the ratio between the creep and the elastic strain.
Schänzlin, J., Fragiacomo, M.
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PREDICTION OF THE CREEP COEFFICIENT OF MODIFIED GLASS-COMPOSITE PIPES
Technique and technology of silicatesIntroduction. This article presents the results of an experimental determination of the creep coefficient of glass-composite pressure pipes using long-term testing over 10,000 hours in accordance with GOST R 55077-2012. The relevance of the study is driven by the requirements of current Russian construction legislation: under the Town Planning Code of ...
Sergey Shashkin, Tatyana Matseevich
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Longitudinal moisture-shrinkage coefficients of softwood at the mechano-sorptive creep limit
Wood Science and Technology, 1988An adaptor for the conversion of a high-accuracy tensile creep machine to compression loading is described. It was found that a stable mechano-sorptive creep limit could be obtained by a suitable load reduction after moisture cycling; after which further creep and creep recovery just balanced each other.
D. G. Hunt, C. F. Shelton
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Stress Relaxation Coefficient Method for Concrete Creep Analysis of Composite Sections
Journal of the Korea Concrete Institute, 2011The concrete creep deformation of a hybrid composite section can cause additional deformation of the composite section and the stress relaxation of pre-compressive stress on the concrete section due to partial restraint of the deformation. In this study, the stress relaxation coefficient method (SRCM) is derived for simple analysis of complicate hybrid
Jung-Heum Yon, Tae-Hyun Kyung, Da-Na Kim
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1982
Various prediction methods for creep of concrete are compared with experimental data and evaluated by statistical methods. Predicted creep functions exhibit average coefficients of variation between 25, 0 and 39, 3 percent. Average errors of a final creep coefficient may range from 23, 2 to 61, 9 percent depending on the particular method considered ...
H. S. Müller, H. K. Hilsdorf
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Various prediction methods for creep of concrete are compared with experimental data and evaluated by statistical methods. Predicted creep functions exhibit average coefficients of variation between 25, 0 and 39, 3 percent. Average errors of a final creep coefficient may range from 23, 2 to 61, 9 percent depending on the particular method considered ...
H. S. Müller, H. K. Hilsdorf
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Coefficient of friction under flat profile creep-feed grinding
Journal of Friction and Wear, 2014The process of flat creep-feed grinding of a wheel by the periphery of a wheel is studied. A method of determining the coefficient of friction for creep-feed grinding procedures is developed. The coefficient of friction is experimentally found depending on the grade and temperature of the blank and the grade of the cutting lubricant, as well as the ...
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