Request PDF | Dynamic crushing of cellular materials: A unique dynamic stress–strain state curve | Cellular materials under high loading rates have typical features of deformation localization ...
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EA represents the total area under the crush force-displacement curve for the entire crushing process, which was obtained by numerical integration of the curve. SEA is the energy absorbed per unit mass of the test specimen. This was calculated by dividing EA with the mass of the crushed portion of the test specimen.
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Download scientific diagram | The mean crushing load and ultimate load curve with different plate thickness. from publication: A study on the effect of stiffeners on quasi-static crushing of ...
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This paper aimed to experimentally clarify the dynamic crushing mechanism and performance of ethylene vinyl acetate copolymer (EVA) and analyze the influence of density and thickness on its …
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Experimental results show that axial crushing load-displacement curves in tubes are highly non-uniform in character. The height of the first peak (collapse load), which is associated with the first hinge, is much higher than those of the other peaks. The uniformity of the crushing load and deceleration pulse could be obtained by introducing ...
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The curve oscillates about the average crush load without large variations in local peak values, indicating that the simulation is stable. The filtered crush curve from the baseline simulation is compared with the experimental curve in Fig. 7. The simulation captures all key characteristics of the experimental curve: initial slope, peak load ...
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4 Crush Strength Curve HexWeb® honeycomb has the unique property of crushing in a uniform, predictable and efficient manner. It is very reliable and lightweight, thus it is well adapted for energy absorption applications. A typical honeycomb crush strength curve is shown and explained, below in Figure 1. Deflection
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The crushing performance of hexagonal tubes has frequently been reported. In [], the method of angle elements was applied for studying the crush resistance of polygonal tubes, including hexagonal tubes, and some discussion about the deformation mechanism of energy absorption is presented.In [], a hexagonal TW tube with partition …
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In this study, we try to establish the physical model of the crushing force and displacement under the same structure based on the anatomy of the whole process sample, and the mathematical …
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The macroscopic behaviour of a soil, in particular the strength and strain is largely affected by the degree of particle crushing. This is particularly true for triaxial shear tests, where the breakage of particles decreases the rate of dilation [].The degree of particle crushing is influenced by a number of factors (including size, shape, mineralogy, water …
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Download scientific diagram | Load-displacement curves and crushing process of (a) aluminum alloy circular and (b) CFRP tubes. from publication: Crushing Characteristics Comparison between ...
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The mechanical parameters of the optimised crush zone were obtained with energy absorption of 597.51 kJ, mean crushing force of 2398.38 kN, and crushing displacement of 249.72 mm.
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A power-law relation between the dynamic initial crushing stress and the strain rate is established, which confirms the strain rate effect of cellular materials. ... Compared with the quasistatic stress–strain …
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The effect of the crushing strength of LWA on the stress–strain relationship of concrete was evaluated by comparing the normalized stress–strain curves fitted with quadratic equation for all types of LWA The parameters a and b of the fitted quadratic equation (Table 4) as obtained by the single-curve technique for different LWA volume ...
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Download scientific diagram | Typical axial force–displacement curves of crushing tests of the rockfill particles with different size range: a 9.5–19.1 mm, b 19.1–25.4 mm, c 25.4–38.1 mm ...
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3.2 Particle Crushing. Figure 7 shows the typical particle size distribution curves following the compaction tests performed. From the plots in the figure, two conclusions may be obtained. One is that the particle size distribution curves after compaction are shifted above and right compared to the corresponding original curves.
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The in-plane crushing response of a novel honeycomb consisting of sinusoid-curved ligaments is comparatively analyzed under quasi-static and dynamic loadings using numerical and theoretical methods. The finite element models for ABAQUS/Explicit are validated against the experimental results obtained from the quasi …
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Particle crushing is a fundamental issue in the analysis of the deformation and failure behaviour of rockfill materials. The impact of morphology on the crushing behaviour of granite particles is investigated via a series of in-situ X-ray micro-CT tests and DEM simulations. Single-particle crushing tests are performed on rock particles of three …
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Even though approximate, these curves are of great value in crushing-plant design, or in the solution of problems concerning additions or alterations in the plant flowsheet. They simplify the problem …
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To optimize the crushing chamber of the gyratory crusher, the discrete element method (DEM) is used to explore the influence of the concave curve height, concave curve radius, eccentric angle, and mantle shaft speed on the performance of the crushing chamber in this paper, here, the DEM analysis model of iron ore particle is …
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In the compaction stage, the crushing curve correlates well with the cosine function. In the folding stage, the crushing process begins to lose stability and is hard to predict. The mathematical relationships …
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Lee et al. [13] published a layer discrete 3-D model of the crushing of a pouch cell, considering strain-rate effects and material anisotropy. They used the force–displacement curve and fracture geometry for validation and compared the results of the discrete layer model with a representative volume element (RVE) model.
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A series of crushing experiments were performed on different configuration of aluminum honeycomb core which were made of aluminum alloy 3003 H18 with a density of 27.3 kg/m 3.The mechanical properties of the aluminum foil (3003 H18) with t = 0.08 mm are given in Table 3 (Ref 13) they were obtained by using the tensile specimens with …
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At present, steelmaking slag is widely used in civil engineering projects as a road, landfill, and covering aggregate, among other uses, at home and abroad due to its excellent physical and mechanical properties [4, 5].Recycling steelmaking slag has been evaluated in terms of its particle size (particle size distribution), quality standards …
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of the force-displacement curves of those particles. In addition, this paper makes a preliminary inquiry into the effect of equancy and circularity on particle crushing strength. However, due to its high brittleness and com-plex internal pore structure, the crushing strength of coral sand particles varies greatly even with similar appearance ...
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As can be seen in Fig. 2, the typical force-displacement curve shows regular and clear symmetric peaks with an evolutionary character. ... and that the material properties are changing at the different stages of crushing. Owing to the curve type of load, the energy absorption performance becomes stronger in the later period. ...
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Crushing plant layouts can differ considerably from site to site. Plants are designed differently due to variations in the type of rock, the use of the products, the size of the quarry, plant history and many other factors. The plant model is formed by connecting the various production unit models to each other. The rock feed material is ...
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Numerical Investigation on Dynamic Crushing Behavior of Auxetic Honeycombs with Various Cell-Wall Angles. Xin-chun Zhang [email protected], ... So a dynamic nominal stress-strain curve could be obtained after conversion. A typical dynamic response curve of auxetic honeycomb is given in Figure 3. It is seen that the specimens …
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The crushing energy is analysed based on the first law of thermodynamics. ... we can see that the evolution of the crushing energy curves is consistent with the change in the number of microcracks ...
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