Search
Now showing items 31-40 of 173
Expert system for machinability data integrated with a CAD system
(Virginia Tech, 1989-08-15)
<p>This work defines an expert machinability data system integrated with a CAD
system, for computing complete machining parameters required for further processing
with NC software. The main objective is to move toward ...
Position control and vibration suppression of a flexible beam-like structure cantilevered from a rotary actuator within a gravitational field
(Virginia Polytechnic Institute and State University, 1986)
An analytical and experimental investigation into the position and vibration control of beam-like structures within a gravity field using only root actuation was performed. Two methods were used to linearize the system's ...
A finite element study of bending stress variation in meshed spur gear pairs
(Virginia Polytechnic Institute and State University, 1987)
A study of the bending stresses in a pair of meshed spur gears using the finite element method is presented. The models analyzed were in the shape of a circular gear with five teeth or a five-tooth rack. A unit torque (1 ...
An Investigation of Distortion Indices for Prediction of Stalling Behavior in Aircraft Gas Turbine Engines
(Virginia Polytechnic Institute and State University, 1981-08)
The ability of twelve distortion indices to predict stalling behavior in aircraft gas turbine engines was investigated using J85-GE-13 turbojet engine data, TF30-P-3 turbofan engine data, and modified T64-GE-6B compressor ...
An experimental investigation of instability in turbulent-flow freezing
(Virginia Polytechnic Institute and State University, 1982)
An experimental investigation of the solidification of a fully developed turbulent internal flow due to external cooling of the tube wall was conducted. A region of unstable freezing behavior was located and bounded in ...
A theoretical one-dimensional analysis of both the temperature and stress distributions in a flat semitransparent plate subjected to a high intensity radiative source at arbitrary incidence angles
(Virginia Polytechnic Institute and State University, 1982)
The temperature and thermal stress distributions in a semi-transparent solid of flat plate geometry exposed to a collimated radiative source for various angles of incidence is investigated. This plate is convectively ...
The effect of operating conditions on emissions from a two-stage lump coal combustor
(Virginia Polytechnic Institute and State University, 1982)
Residential coal stoves emit various pollutants such as CO, NO<sub>x</sub>, SO<sub>x</sub>, and smoke. The emissions can be reduced by varying the burning conditions in the stove. This investigation studied the effect of ...
Synthesis of a near-optimum finite element mesh
(Virginia Polytechnic Institute and State University, 1982)
A finite element program post-processor is developed to help synthesize a near-optimum mesh. This post-processor displays, interactively, six different energy functions, along with the usual stress functions. The six energy ...
An experimental analysis of the hydrodynamic characteristics of the monoform: a novel hull form
(Virginia Polytechnic Institute and State University, 1985)
This thesis presents the results of an experimental investigation of the hydrodynamic characteristics of the Monoform hull in calm water. The forces acting on a 1.7 meter model were measured as the model was held captive ...
Acoustical behavior of a turbulent, ducted, premixed, hydrogen- flame burner
(Virginia Polytechnic Institute and State University, 1985)
The acoustic source structure, acoustic farfield, and duct terminating impedances fully describe the acoustics of a source within a duct. A main goal in the study of noise generated by turbulent combustion is to characterize ...