Results 221 to 230 of about 920 (267)

Improvements to a Stress-Path Triaxial Cell

Geotechnical Testing Journal, 1995
Abstract Stress-path triaxial cells are presently used all over the world. Accurate use of this type of apparatus allows an investigation into the mechanical behavior of soils with regard to a wide range of stress and strain. A correct evaluation of small-strain stiffness requires an accurate definition of the compliance curve of the ...
S Aversa, F Vinale
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A model for concrete subjected to triaxial stresses

Cement and Concrete Research, 1975
Abstract A model of concrete consisting of cylindrical pieces of aggregates in a matrix of cement paste was analyzed by the plane-stress finite element method. The three-dimensional case was reduced to a two-dimensional one by restricting the multiaxial stresses to the cylindrical triaxial state of stress.
R.G. Palaniswamy, S.P. Shah
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Uncertainties in Triaxial Residual Stress Measurements

Materials Science Forum, 2011
Residual stress measurement techniques using mechanical strain relaxation depend on a number of physical quantities and are therefore sensitive to errors associated with the measured data. The resulting stress uncertainties can easily become significant and compromise the usefulness of the results or lead to misinterpretation of the behaviour of the ...
Goudar, D. M., Hossain, S, Truman, CE, Kingston, E.J., Smith, DJ   +4 more
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Thermal Residual Stresses and Triaxiality Measures

PAMM, 2010
AbstractHigh performance ceramics have found their way into many highly challenging engineering tasks. For example silicon nitride is one of the best choices, if a material for demanding applications like metal forming and cutting is required. Due to the brittle nature of these hard and strong materials it is useful to know about thermal residual ...
Wippler, J., Böhlke, T.
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Stress-Controlled Apparatus for Triaxial Testing

Journal of the Soil Mechanics and Foundations Division, 1967
A testing machine in which the rate of true stress can be controlled manually or automatically is described. A pneumatic analog computer continuously calculates the cross section of the test specimen and provides the loading unit with a pressure such that the force applied produces a given axial stress.
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Triaxial Stress-Strain Relationship for Concrete

Journal of the Engineering Mechanics Division, 1977
A triaxial constitutive law and a failure criterion for concrete under short-term monotonic loading are derived from the analysis of available experimental data. Their representation through the octahedral normal and shear components of stresses and strains show that the deformational behavior of concrete can be described through simple analytical ...
Luigi Cedolin, Sandro Dei Poli, Yves R.J. Crutzen   +2 more
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Orthotropic Model of Concrete for Triaxial Stresses

Journal of Structural Engineering, 1986
An orthotropic model to predict the ascending and descending parts of the stress‐strain curves of concrete subjected to biaxial or triaxial compressive stresses is presented. The stress‐induced orthotropic material properties are expressed in terms of six constants in the compliance matrix.
Shuaib H. Ahmad, Surendra P. Shah, A. R. Khaloo   +2 more
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On the stress-force-fabric equation in triaxial compressions: Some insights into the triaxial strength

Computers and Geotechnics, 2017
Abstract The strength of granular materials during triaxial compression is investigated via a grain scale analysis in this paper. A 3D Discrete Element Method (DEM) program provides the triaxial strength data and helps to validate the micromechanical analysis.
He, Xuzhen, Cai, Guoqing, Zhao, Chenggang, Sheng, Daichao   +3 more
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Effect of heel height on in-shoe localized triaxial stresses

Journal of Biomechanics, 2011
Abnormal and excessive plantar pressure and shear are potential risk factors for high-heeled related foot problems, such as forefoot pain, hallux valgus deformity and calluses. Plantar shear stresses could be of particular importance with an inclined supporting surface of high-heeled shoe. This study aimed to investigate the contact pressures and shear
Yan, Cong, Jason Tak-Man, Cheung, Aaron K L, Leung, Ming, Zhang   +3 more
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Growth and Closure of Voids in Metals at Negative Stress Triaxialities

Key Engineering Materials, 2013
Damage of metals subjected to large plastic deformations typical for forming processes is mainly governed by void nucleation, growth and coalescence. An opposite process may occur in deformation processes with negative stress triaxialities: the closure of strain-induced defects under large hydrostatic pressure.
Zapara, M., Tutyshkin, N., Müller, W.H.
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