normal compression
The fractal micro mechanics of normal compression
... When a particle breaks, it is replaced by two smaller sphere fragments, equal in size to one another, and which together have the same volume as the original sphere, ensuring conservation of mass. Particles always split ...
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Validation of the log e–log σ normal compression law using particle strength data
... the compression law and suggests that it can be applied to any sand; however, a much larger quantity of experimental data is ...the compression law could be in the prediction of the compressibility of ...
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An insight into the yielding and normal compression of sand with irregularly shaped particles using DEM
... in normal compression is usually considered to be the point at which the compressive behaviour transitions from elastic to plastic; and is usually assumed to represent the onset of particle crushing ...
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Investigating the effects of particle shape on normal compression and overconsolidation using DEM
... one-dimensional compression of sand [1]. They showed that the normal compression line (NCL) for a sand should be linear when plotted on double-logarithmic axes, and that the compression ...the ...
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Buckling Capacity Optimization of Stiffened Rectangular Plate under Uniform Normal Compression
... uniform normal compression, the optimization model of stiffened rectangular plate was set up based on APDL and ANSYS commands, and the sequential linear programming method was executed to optimize the ...
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On the micro mechanics of one dimensional normal compression
... The normal compression lines for these three simulations, along with the simulation using a Weibull distribution of strengths, are given in ...the normal compression ...
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Micro mechanics of isotropic normal compression
... isotropic normal compression. One-dimensional (1D) normal compression has previously been modelled in three dimensions using an oedometer and a large number of particles and without the use of ...
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Dynamic fragmentation of rock clasts under normal compression in sturzstrom
... As the clusters were arranged using the same particle size, the difference between specimens rests solely on the random rotation of each cluster and the random placement of flaws. A suite of oedometric strain rate tests ...
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Micro mechanics of the critical state line at high stresses
... Upon normal compression the state moves along a virgin-loading line, where the voids ratio decreases only slightly with the volume of the smallest particles, with no proportion- ality observed between these ...
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Discrete element modelling of one dimensional compression of cemented sand
... Figure 9 shows the particle size distributions at a stress of 20 MPa from the unbonded simulation and two bonded simulations with the alternative bond breakage configura- tions. Both the simulation with ‘standard’ bonds ...
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Experiments and 3D DEM of Triaxial Compression Tests under Special Consideration of Particle Stiffness
... Discrete element modelling is commonly used for particle-scale modelling of granular or particulate materials. Developing a DEM model requires the de- termination of a number of micro-structural parameters, including the ...
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Direct In Situ Observation of Deformation Modes in Wedge Indentation of Metals
... Figures 6(a)6(c) show the plastic strain distributions (von Mises effective strain) for 2¡ = 30°, 90° and 120°, as estimated by the PIV analysis. Two zones of high strain can be seen in these figures. One of these zones ...
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Equations of state of unreacted explosives: PETN, RDX, HMX, TATB
... In this paper, the equation of state of “cold” HE was calculated using the approach of Refs. [1–3], which is usefully employed to calculate equations of state of different inert materials in a wide range of pressures. ...
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Effects of Time-Dependent Parameters on the Performance of a Concrete Containment Structure
... the normal stress in either radial or circumferential directions is still in compression in the most part of the Base Case structure except the region near the perimeter wall- ring beam ...
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Design of novel High Secure Image Encoding using V.L.S.I.
... lossless compression technique here to change the ...bit compression that is extremely helpful to the ...lossless compression can send the original data as ...lossless compression technique ...
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An Experimental Investigation on Structural Properties of Polymer Modified Fiber Reinforced Concrete
... sample have wider crack compared to LMC and very thin crack width is seen in case of LMFRC beams [2]. A linear co relation is observed between micro mechanical properties and macroscopic properties of cementitious ...
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Delignification of cell walls of Chamaecyparis obtusa during alkaline nitrobenzene oxidation
... In compression wood, the relative lignin content decreased more or less uniformly from the sample reacted for 15 min to that reacted for 50 min, after which it became constant at about the same level observed for ...
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Imaging of Intraneural Edema by Using Gadolinium Enhanced MR Imaging: Experimental Compression Injury
... under Compression There was no extravasation of protein tracers and no enhancement after compression at ...After compression at 30-g force, there was congestion of Evans blue albumin in the ...
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Fuzzy Clustering and Hyperanalytic Wavelet Transform for Lossy Image Compression: A Review
... However, many common classes of images, such as fingerprints, medical images, scanned documents and satellite images do not have the same statistical properties as photographic images. The standard wavelets used in image ...
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Properties of Concrete Containing Mussel (Perna viridis) Shell Ash as Partial Cement Replacement
... According to data obtained, these clearly shows that the decreases of strength values as the replacement level of MSA filler increased. The compressive strength value in 28 days for S0 indicates the highest value 43.5MPa ...
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