30 Result(s) for 'Plasticity'
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Context: An evaluation of aluminium alloy for Plasticity applications was undertaken to bridge the gap in appraising the impact of variation of alloying elements such as magnesium (Mg) and...
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Large Strain Elasto Plasticity
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Juraj Šarloši, Jozef Bocko
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American Journal of Mechanical Engineering. 2016 4 (7). doi: 10.12691/ajme-4-7-19
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Keywords: Elasto-Plasticity , Kirchhoff stress tensor, Cauchy stress tensor, elasto-plastic decomposition, Jauman rate, Truesdell rate
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Context: In this paper we present a continuum theory for large strain Elasto-Plasticity based on formulations: Eulerian Formulation and Multiplicative Elasto-Plasticity. The theories includes Cauchy and Kirchhoff stress...
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Context: There are different methods to improve the mechanical properties of materials such as, heat treatment, casting of alloying element etc. Thermo-Mechanical Treatment at different level of deformation is carried out to enhance the mechanical behavior of ductile cast iron. The tensile properties of the tested iron are determined at room temperature, 450C, 750C, and 850C. However, the effect of testing temperature on ultimate tensile strength, strain hardening coefficient and ductility are investigated at different deformation speed; 1 mm/s, 5 mm/s and 25 mm/s. the results show that temperature affects significantly the deformation properties of the cast iron, the absorbed energy of the materials increases with the increase of deformation temperature and loading speed. The maximum softening is obtained for deformation temperature 850C and smaller strain hardening coefficient 0.27. The deformation parameters temperature and speed make the deformation and flow behavior of this case of cast iron becomes like flow behavior of ductile steel.
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Context: The paper is focused on the process of selecting a suitable material Plasticity model. Such a model would be used in the future numerical analysis of the behaviour of selected structural elements in the elastic-...
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Context: ...o determine its applicability in industries. Grain size analysis reveals that clay-sized particles dominate the samples, with a Plasticity index ranging from 6.8% to 20.67%. The mudrock materials are primarily composed of kaolinite (16.8-49.4%), quartz (15.8-68.9%), and...
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Context: ...d when identifying materials in the preliminary study phase. The soils studied are clays (inactive and normal) of low to medium Plasticity , containing minerals (kaolinite, illite, montmorillonite). The swelling potential of the soils varies from low, medium and high. Th...
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Context: ... represent concrete, cover plates and shear connector respectively. Behaviour of concrete is represented using concrete damaged Plasticity model, while steel behaviour is modelled by using bilinear stress-strain curve. Beam is simply supported and is subjected to a cent...
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Geotechnical Assessment of Clay Deposits in Minna, North-Central Nigeria for Use as liners in Sanitary Landfill Design and Construction
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Amadi A. N., Okunlola I. A., Eze C. J., Jimoh M. O., Unuevho C. I., Abubakar Fahad
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American Journal of Environmental Protection. 2015 3 (3). doi: 10.12691/env-3-3-2
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Keywords: clay, geotechnical assessment, landfill design, barrier soils, containment, contamination, minna, north-central Nigeria
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Context: ...assified as a clayey material. The liquid limit ranged from 45.5%-61% with a mean value of 51.8% which is an indication of high Plasticity and low hydraulic conductivity, the plastic limit ranged from 29.2%-35.8% with a mean value of 32.44% and its plasticity index rang...
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Comparative Study of the physico-chemical Characterization of Three Arid Soils in the Hadjer Lamis Region (Chad)
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Timbe N’Djédanoum, François Ouedraogo, Sayouba Kabre, Ibrahim Pafadnam, Moussa Dit Corneille Tarpilga, Bétaboalé Naon, Francois Zougmore
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American Journal of Materials Science and Engineering. 2023 11 (2). doi: 10.12691/ajmse-11-2-2
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Keywords: arid, climate, physico-chemical, soil, organic matter, fertility
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Context: ...in the bottom of the sieves for the different samples, which are as follows: Dandi: 63.4%, Karal: 70.5%, Mani: 2.1%. Mani has a Plasticity index (PI) that cannot be measured, while Dandi and Karal have plasticity indices of 4.75 and 21.15 respectively. Using the soil cl...
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Context: ...ominent than granite-gneiss and schist. The index test results for the natural moisture content ranges from 11.19 – 24.08%; the Plasticity index ranges from 0 – 5.21%; the sieve analysis result shows that coefficient of uniformity, Cu ranges from 3.37 and 29....
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