Browsing Mechanical Engineering by Title
Now showing items 109-128 of 215
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A modified plasticity theory for porous metals
(Wiley Online Library, 1980-05)A plasticity theory for porous metals is proposed. A simple model of a porous materials is analysed by the finite element method. Small strain elastic–plastic analysis provides stress–strain curves, yield stressed and ... -
A modified sequential particle swarm optimization algorithm with future time data for solving transient inverse heat conduction problems
(Taylor and Francis Online, 2011-06)The particle swarm optimization (PSO) method is modified and employed to solve the inverse heat conduction problem. Since the main drawback of PSO in solving inverse problems is its slow convergence, most of the modifications ... -
A new extension of particle swarm optimization and its application in electronic heat sink design
(ASME, 2007-11)Particle Swarm optimization (PSO) is a robust stochastic evolutionary computation technique which is based on the movement and intelligence of swarms. In this paper the PSO algorithm is modified to improve its performance ... -
A no-delay single machine scheduling problem to minimize total weighted early and late work
(Springer, 2022)This paper investigates the no-delay single machine scheduling problem to minimize the total weighted early and late work. This criterion is one of the most important objectives in practice but has not been studied so far ... -
NON DESTRUCTIVE TESTING FOR Ni-Ti SAMPLES PREPARED BY DIFFERENT TECHNIQES
(IJASCE, 2013-10)Long series of searches were applied to emphasize Ni-Ti alloy composition harmony within human body. Ni-Ti alloy chemical and mechanical testing results paved for a revolution in the field of medical implants. Despite the ... -
Non-Circular Hydraulic Jump on a Moving Surface due to an Impinging Circular Free Surface Jet of Water
(Wiley Online Library, 2012-04)Liquid jet impingement has many industrial cooling applications such as metal manufacturing and steel cooling on run-out tables (ROT). The development of the wetting front around the impingement point of a jet is central ... -
Non-local correlation dynamics in two-dimensional graphene
(2022-03)We explore the non-local correlation dynamics in a Graphene sheet of disordered electrons in a two-dimensional honeycomb lattice, containing two sublattices, induced by the interaction range of impurity potentials of two ... -
Nonlinear Dynamics of Flexible Rotors Supported on Journal Bearings—Part I: Analytical Bearing Model
(American Society of Mechanical Engineers, 2018)To determine the bifurcation types in a rotor-bearing system, it is required to find higher order derivatives of the bearing forces with respect to journal velocity and position. As closed-form expressions for journal ... -
Nonlinear Dynamics of Flexible Rotors Supported on Journal Bearings—Part II: Numerical Bearing Model
(American Society of Mechanical Engineers, 2018)The nonlinear stability of a flexible rotor-bearing system supported on finite length journal bearings is addressed. A perturbation method of the Reynolds lubrication equation is presented to calculate the bearing nonlinear ... -
Nonlinear-electrostatic analysis of micro-actuated beams based on couple stress and surface elasticity theories
(Pergamon, 2014-07)In this paper, a size-dependent electrostatic model for cantilever micro-actuated beams is investigated considering the microstructure and surface energy effects. The modified couple stress theory is used to capture the ... -
Nonreciprocal elasticity and the realization of static and dynamic nonreciprocity
(2021-06)The realization of the mechanical nonreciprocity requires breaking either the time-reversal symmetry or the material deformation symmetry. The time-reversal asymmetry was the commonly adopted approach to realize dynamic ... -
A Novel Model for Benchmarking the Performance of Retail Stores for Retail Operations using Lean Manufacturing Approach
(ResearchGate, 2017)In the present study, lean manufacturing approach has been utilized to measure and benchmark the efficiency of retail services at five different store branches belonging to the same hypermarket and supermarket retail firm ... -
Numerical analysis of metal cutting with chamfered and blunt tools
(American Society of Mechanical Engineers., 2002-05)In high speed machining of hard materials, tools with chamfered edge and materials resistant to diffusion wear are commonly used. In this paper, the influence of cutting edge geometry on the chip removal process is studied ... -
Numerical analysis of metal cutting with chamfered and blunt tools
(American Society of Mechanical Engineers, 2002-04)In high speed machining of hard materials, tools with chamfered edge and materials resistant to diffusion wear are commonly used. In this paper, the influence of cutting edge geometry on the chip removal process is studied ... -
Numerical Assessments of Impingement Flow over Flat Surface due to Single and Twin Circular Long Water Jets
(Tsest, 2012-11)Hydrodynamics of impingement flow is a key partner of heat transfer analysis of run-out table (ROT) steel cooling. Velocity and pressure profiles before and after impingement of long circular free-surface industrial water ... -
Numerical Investigation of Compressor Blades Deformation During Stall Development into Surge
(American Institute of Aeronautics and Astronautics, 2017-05)The present paper focuses on the simulations of the flow behavior and the structural analysis for a high-speed compressor at the transition time between stall and surge. Two cases are presented; the first case is for the ... -
Numerical Investigation of Rotating Stall Characteristics and Active Stall Control in Centrifugal Compressors
(American Society of Mechanical Engineers., 2014-11)This paper focuses on providing better view for the understanding of rotating stall phenomenon in centrifugal compressors by using numerical simulations and presents a study of the role of air injection method in delaying ... -
Numerical investigation of rotating stall in centrifugal compressor with vaned and vaneless diffuser
(Springer Link, 2015-12)This study presents a numerical simulation of the stall and surge in a centrifugal compressor and presents a description of the stall development in two different cases. The first case is for a compressor with vaneless ... -
Numerical Investigation of Steady Air Injection Flow to Control Rotating Stall in Centrifugal Compressors
(American Society of Mechanical Engineers., 2014-10)This paper concerns the role of air injection method in stabilization and stall control in centrifugal compressors. The main aim is to find the best arrangement of air injection parameters such as injection angle and ... -
Numerical prediction of optimum hollowness and material of hollow rollers under combined loading
(ELSEVIER, 2009)Fatigue life investigations have been made for cylindrical hollow rollers in pure rolling contact. In addition to normal loading, the rollers have been subjected to tangential loading of 1/3rd the normal load value. ...