Research Papers/Topics in Structural Engineering

Nanoparticle Delivery via Stocky SWCNTs, A Nonlinear-Nonlocal Continuum-based Scrutiny

Excellent mechanical properties plus to the good biocompatibility of single-walled carbon nanotubes (SWCNTs) are offering them as efficient nanodevices for delivering of nanoparticles. Due to the friction between the outer surface of the nanoparticle and the inner surface of the SWCNTs, mass weight of the nanoparticle, and the interactional van der Waals (vdW) forces between the constitutive atoms of the nanoparticle and those of the SWCNT, both longitudinal and transverse waves propagate wit...

On the Interaction of a Single-walled Carbon Nanotube with a Moving Nanoparticle Using Nonlocal Rayleigh, Timoshenko, and Higher-order Beam Theories

Interaction of a moving nanoparticle with a single-walled carbon nanotube (SWCNT) is of concern. The SWCNT is simulated by an equivalent continuum structure (ECS) under simply supported boundary conditions. The moving nanoparticle is modeled by a moving point load by considering its full inertial effects and Coulomb friction with the inner surface of the ECS. The ECS under the moving nanoparticle is modeled based on the Rayleigh, Timoshenko, and higher-order beam theories in the context of th...

Nonlocal Continuum-based Modeling of a Nanoplate Subjected to a Moving Nanoparticle. Part I, Theoretical Formulations

The potential applications of nano plates in energy storage, chemical and biological sensors, solar cells, field emission, and transporting of nano cars have been attracted the attentions of the nanotechnology community to them during recent years. Herein, the later application of nano plates from non local elastodynamic point of view is of interest. To this end, dynamic response of a nano plate subjected to a moving nano particle is examined with in the context of non local continuum theory ...

An Analysis Of Beams On Nonhomogeneous Elastic Foundation Using Initial Value Approach

ABSTRACTThe paper presents an analysis of beams on non-homogeneous elastic foundation, wherethe deformation is partly localized and partly continuous. The soil was modeled to be in layers,in which two layers within the soil strata were considered. The different layers of the soil havetheir respective sub-grade modulus k, and the entire foundation is resting on a rigid base. Theformulation was achieved by imbedding a beam of known bending rigidity within the layers ofthe foundation. The d...

Numerical Investigation on Burial Corrugated Steel Culverts Design

A full analysis and design theories have been reviewed conducted to determine response of a buried corrugated steel structural plate culvert for four exceptional shapes as; a round pipe, horizontal ellipse, arch andlow profile arch. The select of culverts span, cover, and exceptional live load have been applied and all were have the same value. AASHTO LRFD Method has been used to measure the result of analysis and design by using manual and computer program techniques...

Structural Characteristics Of Soilcrete Blocks

ABSTRACT  This work investigates the structural characteristics of soilcrete blocks (lateritecement blocks and laterite-sand-cement blocks) produced with locally available and affordable laterite. Scheffe’s simplex method and Osadebe’s regression theory were used to formulate mathematical models for optimisation of properties of soilcrete blocks which include compressive strength, split tensile strength, shear strength, flexural strength, Poisson’s ratio, modulus of elasticity...

Artificial Neural Network Model For The Prediction Of Elastic Modulus Of Concrete

ABSTRACT This research presents Artificial Neural Network Model for the prediction of the Modulus of Elasticity of Concrete. Egbulonu (2011) equation derived from Scheffe’s (4, 2) simplex equation for predicting the Modulus of Elasticity (MOE) was used to generate 800 values. These data represent different values of Modulus of Elasticity (MOE) out of which, 571 values were selected randomly by the artificial neural network. From the selected values, 400 were used for trainin...

Application of a Direct Variational Principle in Elastic Stability Analysis of Thin Rectangular Flat Plates

ABSTRACT The purpose of this work is to use the energy approach in the form of direct variational principle (Rayleigh-Ritz method) for buckling analysis of thin rectangular plates with various boundary conditions using Taylor series shape functions. To do this, thin rectangular flat plate of various boundary conditions with three dimensions Ly, Lx and t was analyzed in this research. Ly and Lx are secondary and primary in-plane dimensions respecti...