Browsing Department of Mechanical and Aerospace Engineering by Issue Date
Now showing items 21-40 of 916
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Crashworthiness Design Optimization Using Surrogate Models
(Mechanical Engineering, 2007-08-23)Despite the advances in computer technology, the enormous computational cost associated with the large-scale and complex nonlinear crashworthiness simulations renders it to be impractical to rely exclusively on computer ... -
Airy Stress Function For Two Dimensional Inclusion Problems
(Mechanical Engineering, 2007-08-23)This thesis addresses a problem of finding the elastic fields in a two-dimensional body containing an inhomogeneous inclusion using the Airy stress function which is determined so that the prescribed boundary condition at ... -
Air Jet Impingement For Levitation
(Mechanical Engineering, 2007-08-23)Traditional part acquisition methods such as vacuum cups and robotic grippers do not meet the handling needs of truly fragile materials, because both of these methods require surface contact. An alternative to these ... -
Design Optimization And Synthesis Of Manipulators Based On Various Manipulation Indices
(Mechanical Engineering, 2007-08-23)Design optimization of serial manipulators involves striking a balance between an appropriate joint angle and exact link lengths. The optimization technique used in this thesis uses a unique algorithm that optimizes the ... -
Structural Analysis Of Fiber Reinforced Composite Materials
(Mechanical Engineering, 2007-08-23)A study of fiber reinforced composite structures is conducted .This study includes laminate analysis, analysis of laminated composite beams and parametric study of composite beams. Finite element analysis for each beam ... -
Reliability Of Lead-free Solder Under Cyclic Bending
(Mechanical Engineering, 2007-08-23)To characterize particular compositions of lead free solder, four point cyclic bending test was conducted to study the affects of accelerated stress testing on the package to board interconnects. Nine CTBGA packages with ... -
Analysis Of Tapered Laminated Composite Tubes Under Tension And Torsion
(Mechanical Engineering, 2007-08-23)Closed form expressions for determining the displacement and twisting angle of tapered composite tubes are developed. The analytical expressions are developed based on the modified laminated plate theory which includes the ... -
Structural Optimization Using Femlab And Smooth Support Vector Regression
(Mechanical Engineering, 2007-08-23)In recent years support vector machine (SVM) has been emerging as a popular tool for function approximation. Application of SVM for approximation of mathematical functions and complex engineering analysis has been represented ... -
The Thermal Characteristics Of Liquid-heat-spreader
(Mechanical Engineering, 2007-08-23)The present study is an experimental research of a liquid-heat-spreader (LHS) with saturated water at ~2.29 psia. A LHS, indirect liquid cooling module, was successfully fabricated using thin copper blocks and copper tubes ... -
Parametric Cycle Analysis For Pulse Detonation Engines
(Aerospace Engineering, 2007-08-23)The performance of an ejector-driven pulse detonation engine (PDE) with an afterburner is analytically estimated. In the analysis, the PDE was modeled as a straight tube, closed at the front end and open at the other. A ... -
Uncertainty Characterization Of Orbital Debris
(Aerospace Engineering, 2007-08-23)The increase of orbital debris in the low Earth orbit is a concern for the space industry. Spacecraft and satellites are at risk of collision with orbital debris. Collisions can damage sensitive components or result in ... -
Analysis And Optimal Design Of Beams Using Radial Basis Function
(Mechanical Engineering, 2007-08-23)The application of Multiquadric Radial Basis Function (MQ RBF) in the analysis and optimal design of beams are addressed in this dissertation. For static analysis, a new Least Square Collocation (LSC) method is introduced. ... -
Structural Optimization Using ANSYS And Regulated Multiquadric Response Surface Model
(Mechanical Engineering, 2007-08-23)The high computational expense of large non-linear and complex finite element analysis limits or often prohibits the use of conventional codes in engineering design and multidisciplinary optimization. Consequently alternate ... -
An Approximate Solution To Buckling Of Plates By The Galerkin Method
(Mechanical Engineering, 2007-08-23)This thesis presents a semi-analytical method to solve the governing differential equation of plates using the Galerkin method. Symbolic algebra software is extensively used to perform necessary calculations. In this thesis, ... -
Control And Simulation Of Relative Motion For Aerial Refueling In Racetrack Maneuver
(Aerospace Engineering, 2007-08-23)This thesis addresses the problem of controlling the receiver aircraft to achieve a successful aerial refueling. For the performance verification of the controller, a new set of nonlinear, 6-DOF, rigid body equations of ... -
Viscoplastic Finite-element Simulation To Predict The Solder Joint Fatigue Life Of Different Flash Memory Die Stacking Architectures
(Mechanical Engineering, 2007-08-23)This thesis focuses on the viscoplastic finite-element simulation to predict the solder joint fatigue life of different die stacking architectures for flash memory products. Four different stacked package architectures ... -
Failure Analysis Of Composite Laminates With A Hole By Using Finite Element Method
(Mechanical Engineering, 2007-08-23)Predicting the strength of a given laminate has been extensively studied. There have been several fracture models proposed but still the immense tests of composite laminates are still needed. Different material systems or ... -
Numerical Study On Capillarity- Dominant Free Surface And Interfacial Flows
(Mechanical Engineering, 2007-08-23)The continuum surface force (CSF) method has been extensively employed in the volume-of-fluid (VOF), level set (LS) and front tracking methods to model surface tension forces. Its ability is limited for the surface tension ... -
An Experimental Investigation Of Ionization Of Supersonic Air By A Corona Discharge
(Aerospace Engineering, 2007-08-23)A technique is developed to ionize supersonic air flow in a shock tube by a weak corona discharge. The driven section of the tube is open to the atmosphere. The shock propagates in the driven section at about 1 km/s by ... -
Numerical Simulation Of Pulse Detonation Phenomena In A Parallel Environment
(Aerospace Engineering, 2007-08-23)The objective of this work was to develop a parallel algorithm that would be used in the simulation of the detonation process in the chamber of a pulse detonation engine. The emphasis is laid on reducing computation ...