Download or read book Void Ratio Effects on the Hyperbolic Stress strain Response of a Sand written by Robert L. Kondner and published by . This book was released on 1963 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Void Ratio Effects on the Hyperbolic Stress Strain Response of a Sand written by RL. Kondner and published by . This book was released on 1964 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of void ratio and confinement stress on the response of a uniform, fine dune sand tested in triaxial compression with octahedral normal stress controlled is given in terms of a two-constant hyperbolic stress-strain formulation. Relations for both the initial tangent modulus and the ultimate shear strength of the sand are contained within the hyperbolic stress-strain relation. The ultimate shear strength as a function of void ratio and confinement stress is given by the mathematical limit of the hyperbolic stress-strain relation, and the initial tangent modulus is obtained by, differentiating the stress-strain equation with respect to strain and evaluation at zero strain.
Download or read book A Hyperbolic Stress strain Formulation for Sands written by Robert L. Kondner and published by . This book was released on 1963 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Laboratory Shear Testing of Soils written by Symposium on Laboratory Shear Testing of Soils, Ottawa 1963 and published by ASTM International. This book was released on 2011 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Laboratory Shear Testing of Soils written by American Society for Testing and Materials and published by ASTM International. This book was released on 1964 with total page 509 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Loading Rate Effects on Compressibility of Sand written by John Guy Jackson and published by . This book was released on 1979 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Effects of Rate of Loading Method of Loading and Applied Total Stress Path on the Critical Void Ratio of a Fine Uniform Sand written by Victor H. Torrey and published by . This book was released on 1981 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Finite Element Analyses of Stresses and Movements in Embankments During Construction written by Fred H. Kulhawy and published by . This book was released on 1969 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this investigation was to develop procedures for conducting finite element analyses of stresses and movements in embankments during construction. The procedures developed involve incremental analyses, simulating successive stages during construction of the embankment, and employ nonlinear stress-strain parameters determined from the results of laboratory tests. Previous studies of the nonlinear, stress-dependent stress-strain behavior of soils were extended during this investigation to include variations of Poisson's ratio values as well as modulus values for use in incremental analyses. In order to examine the suitability of these procedures for representing the stress-strain characteristics of a wide variety of soils under both drained and undrained test conditions, the procedures were applied to 46 different soils, ranging from cobble sizes to highly plastic clays, for which stress-strain information had been published or was available from other sources. In each case it was found that the simple procedures developed for representing nonlinear, stress-dependent soil stress-strain behavior were convenient and provided reasonably accurate representations of the actual soil behavior. (Author).
Download or read book The Response of Soils to Dynamic Loadings written by Kent Allen Healy and published by . This book was released on 1963 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of the Effects of Transient Loading on the Strength and Deformation Characteristics of Saturated Sands written by Raymond Lundgren and published by . This book was released on 1954 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geotechnical Engineering written by Renato Lancellotta and published by CRC Press. This book was released on 2008-07-22 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: Suitable for undergraduates in geotechnical engineering and for use by graduate students, this book explores not only the basics but also several advanced aspects of soil behaviour. Readers gain a good grasp of applied mechanics, testing and experimentation, and methods for observing real structures. Numerous worked examples are included, as is essential reading for students at the end of each chapter.Selected contents:1. Nature and composition of soils 2. Principles of continuum mechanics 3. Constitutive models 4. The porous medium 5. Mechanical behaviour of soils 6. Flow in porous media 7. In situ investigations 8. The collapse of soil structures 9. Performance and serviceability o
Download or read book Mechanical Behavior of Sand Subjected to Impact Loading written by Sudheer Sudhakaran Prabhu and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Sand is generally subjected to quasi-static loading in the field. However, for applications involving projectile impacts and surface or mine blasts, sand is subjected to high strain-rate loading. To predict the response of underground structures under these loading conditions, there is a need to accurately understand the high strain-rate response of sand overlaying these structures. Researchers noted that the split Hopkinson pressure bar (SHPB) tests provide reliable data on the high strain-rate response of sand and have been extensively used. SHPB studies on sand showed that the stress-strain response of sand is dependent on the water content of the specimen and the particle breakage of sand grains. Several numerical models have been developed through the years to capture the high strain-rate sand response accurately. However, these models were developed mainly for dry sands, completely saturated sands, and sand with high water contents. These numerical models are unable to capture the softening and subsequent stiffening stress-strain behavior observed in sands at low water contents and low stresses. In this study, SHPB tests of sands are numerically simulated and the equations of state (EOS) at different water contents are calibrated using back calculation. The back-calculated EOSs are used to calibrate a three-phase model capable of capturing the sand response at varying water contents. The response predicted by the three-phase model is validated by comparing the numerical and experimental stress-strain responses. A parametric study was carried out to understand the effect of interface friction and aspect ratio on the validity of the SHPB results by considering different aspect ratios and interface frictions for the specimens. The results iv showed that specimens with higher aspect ratio take longer time to achieve stress equilibrium while specimens with interface friction never attain perfect stress equilibrium. Another important factor that affects the high strain-rate stress-strain response of sand is the particle breakage of sand grains. Due to the difficulty of continuum-scale models in capturing particle breakage in sands, discrete element method (DEM) is used to model high strain-rate loading of sand specimens. The study tries to understand the effectiveness of particle upscaling-downscaling procedure adopted in DEM in modeling high strain-rate problems. In this study, several SHPB tests reported in literature are modeled in DEM with particle breakage introduced in these simulations. The results showed that with well-calibrated parameters for contact behavior and particle crushing, specimens with upscaled particle size distribution (PSD) provide similar dynamic stress-strain response and PSD evolution as those reported in literature. This study shows the importance of particle breakage in the stress-strain response under high stresses as the specimens without particle breakage yield a much stiffer response compared to the specimens with particle breakage. The developed DEM model will be a useful tool to model the complete SHPB test setup as the incident, reflected and transmitted stress waves can be accurately replicated.
Download or read book Transactions of the Conference of Army Mathematicians written by and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Stress strain and Strength Characteristics of Cohesionless Soils written by Poul Vestergaard Lade and published by . This book was released on 1972 with total page 1640 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stress Induced Anisotropy in Sand and the Evaluation of a Multi surface Elasto plastic Material Model written by John Calvin Mould and published by . This book was released on 1984 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Deformation Characteristics of Sand Subjected to Anisotropic Cyclic Dynamic Loading written by David Harold Timmerman and published by . This book was released on 1969 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nonlinear Analysis of Stress and Strain in Soils written by James M. Duncan and published by . This book was released on 1970 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
