26,032 Result(s)
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Engineering
Mechanical Engineering
Vibration, Dynamical Systems, Control
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Article
Analysis procedure of robot’s loading performance by using actual data
The usage of robots in manufacturing systems is increase. For material handling, the robot loads and unloads a workpiece on and from the given position of a machine, respectively. A robot without a closed cont...
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Atomization of fuel mixtures
The combustion process of a coal/oil slurry begins by atomization of the slurry. This project is a presentation of experimental system and results on atomization of coal/oil(COM) and coal/methanol mixtures wit...
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Measurement of turbulent diffusion field behind a line heat source in a homogeneous shear flow
Turbulent diffusion behind a line heat source immersed in a nearly homogeneous shear flow is investigated. Test section of the wind tunnel is divided into 15 equal width channels equipped with adjustable inter...
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Effects of condensation on the interfacial shear stress in laminar film condensation on a flat plate
Laminar film condensation of a saturated vapor in forced flow over a flat plate is analysed. The problem is formulated as an exact boundary-layer solution. From numerical solutions of the governing equations f...
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Coupled thermoplastic analysis of non-steady state bar drawing with fem
In bar drawing, the diameter of a round bar is reduced by pulling the bar through a conical die. During the process, the bar and the die are heated due to the deformation and friction. The non-steady state def...
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Shape design sensitivity analysis based on boundary integral equation method considering general shape variations
A procedure for shape design sensitivity analysis is developed using a standard boundary integral equation (BIE) formulation for elliptic problems with static response. The performance functional to be conside...
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An experimental study on combustion efficiency of low grade anthracite in AFBC
This is the basic study to develop a fluidized bed combustion boiler which can use low grade anthracite.
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Development of improved externally pressurized gas bearings
As a result of recent research and development work at the K.U. Leuven(Belgium), a number of airbearings with non-parallel airgaps have been designed for which some disadvantages(high costs, low load carrying ...
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Numerical study on the operational performance of spray column direct contact heat exchangers
Spray columns have received considerable attention as direct contact heat exchangers due to their potential high throughput, as well as their near perfect counterflow operations if one-dimensional flow is obta...
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A study on the characteristics of combustion variations of compression ignition engine
This paper describes the results of a study of the variation of combustion characteristics in a precombusion chamber type water-cooled diesel engine. Statiscal analysis on cycle-by-cycle variation of combustio...
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Dynamic instability analysis of a non-autonomous system subjected to moving impulsive non-conservative load
When a force is applied tangentially on the main axis of beam-type structure, it is well known that the system becomes non-conservative.
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A method of prediction of the phase change front
Solidification on the outside wall of a convectively cooled tube is investigated. Experiments on solidification of an initially stagnant liquid onto a convectively cooled vertical tube situated concentrically ...
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An experimental study on crack healing of various glassy polymers
The validity of a simple tube model proposed by the senior author for crack healing recovery of various polymeric materials such as PMMA(Polymethyl-methacrylate) and Homalite-100(A Polyester) has been tested.
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Computational study of flow in a curved pipe with circular cross section
Laminar imcompressible flows in a circular sectioned pipe were investigated by seeking numerical solutions to the Navier-Stokes equations. Three semi-circular pipes of radius ratios 0.05, 0.143 and 0.148 were ...
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Changes in manufacturing strategies…
The factory of the future is going to take on the characteristics of a service company and thus calls for basic changes in production philosophy. The author points out that by division and simplification of la...
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Turbulent scalar transport correlation behind a line heat source in a uniform shear flow
Measured profiles of third order scalar-velocity correlations, which appear in the governing equations of Reynolds stress and turbulent heat flux, are presented for the turbulent diffusion field in a homogeneo...
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An algorithmic solution for frictional contact problems subjected to a twisting moment
An efficient numerical procedure is devised and applied for the frictional contact problems subjected to a normal load and a twisting moment. The traction distribution and the region of micro-slip on any shape...
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Incompressible laminar flow near a corner of 90° angle
Numerical integration is conducted for two-dimensional incompressible laminar flow over a 90° corner. Using Newton’s method, the Navier-Stokes equations are generated up toRe=2800, with the result that the corner...
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A study on the dynamic characteristics of the Korean Yi-dynasty bell type structure
The dynamic characteristics of the Korean Yi-dynasty bell type structure, including the acoustic effects, are analyzed both theoretically and experimentally. The numerical solutions of natural frequencies and ...
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The Gauss optimization method for problems with general nonlinear constraints
A new algorithm is presented for finding the minimum of a nonnegative objective function subject to general nonlinear constraints. This algorithm, based of Gauss’ method for unconstrained problems, is develope...
