Tag Archives: Deformation

Effects of Deformation on Strain Energy Density of Metals (Published)

In this work, a generalized approach for computing the strain energy density of metals and the effects of deformation on it based on the structureless pseudopotential formalism is presented. The approach was used to compute the strain energy density of some metals and it variation with deformation was studied. The results obtained revealed that strain energy density of metals varies in an irregular manner with electron density parameter. Metals in the high-density limit have high values of strain energy density while metals in the low density limit have low values of strain energy density. Furthermore, the variation of strain energy density with deformation varies in different manner for different metals depending on the nature and intrinsic properties of the metals.

Keywords: Deformation, Strain Energy, Strain Energy Density, Surface Stress And Structureless Pseudopotential

Linear Deformation and the Electronic Properties of Metals (Published)

In this work, the modified structureless pseudopotential model was used to compute and study the effects of deformation on the electron density parameter, Fermi energy, Fermi wave vector and chemical potential of different metals. The structureless pseudopotential model was modified for deformed metals by first computing the electron density parameter of deformed metals under the application of different strains. The results obtained revealed that increase in deformation (strain) causes an increase in electron gas parameter, decrease in Fermi wave vector, Fermi energy and chemical potential of metals. The effect of deformation on electron gas parameter is more pronounced in simple metals than in transition and noble metals. The effect of deformation on Fermi wave vector depends on the elastic properties of the metals. Unlike simple metals, the Fermi energy and chemical potential of transition and noble metals are highly affected by deformation. The results of this work show the versatility of the structureless pseudopotential formalism in computing not only the properties of metals even that of deformed metals.

Keywords: Deformation, Electronic Properties., Metals, Structureless Pseudopotential Formalism

LINEAR DEFORMATION AND THE ELECTRONIC PROPERTIES OF METALS (Review Completed - Accepted)

In this work, the modified structureless pseudopotential model was used to compute and study the effects of deformation on the electron density parameter, Fermi energy, Fermi wave vector and chemical potential of different metals. The structureless pseudopotential model was modified for deformed metals by first computing the electron density parameter of deformed metals under the application of different strains. The results obtained revealed that increase in deformation (strain) causes an increase in electron gas parameter, decrease in Fermi wave vector, Fermi energy and chemical potential of metals. The effect of deformation on electron gas parameter is more pronounced in simple metals than in transition and noble metals. The effect of deformation on Fermi wave vector depends on the elastic properties of the metals. Unlike simple metals, the Fermi energy and chemical potential of transition and noble metals are highly affected by deformation. The results of this work show the versatility of the structureless pseudopotential formalism in computing not only the properties of metals even that of deformed metals

Keywords: Deformation, Electronic Properties., Metals, Structureless Pseudopotential Formalism

Geology and Structure of the Precambrian Rocks in Iworoko, Are and Afao Area, Southwestern Nigeria (Published)

Geologic mapping of the study area revealed three dominant lithologic units namely: bandedgneiss, migmatite-gneiss and granite-gneiss respectively. Systematic structural mapping and study of the area also confirmed the preponderance of different types of folded structures such as ptygmatic, recumbent, disharmonic and asymmetrical folds which trend E-W to NNW-EES. Other structures such as dykes, joints, quartz-veins, fractures and micro faults were also detected on the rocks. The overall results showed that the study area is a manifestation of Precambrian deformation as revealed by the magnitude and style of folding which is an indication of different episodes of deformation on the rocks in the area.

Keywords: Afao, Are, Deformation, Lithologies, Lworoko, Structures