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Harvesting Vibration Energy Using Nonlinear Oscillations Of An Electromagnetic Inductor, Christopher Lee, David Stamp, Nitin Kapania, José Oscar Mur-Miranda Jun 2012

Harvesting Vibration Energy Using Nonlinear Oscillations Of An Electromagnetic Inductor, Christopher Lee, David Stamp, Nitin Kapania, José Oscar Mur-Miranda

Christopher Lee

Harvesting energy from ambient vibration is a promising method for providing a continuous source of power for wireless sensor nodes. However, traditional energy harvesters are often derived from resonant linear oscillators which are capable of providing sufficient output power only if the dominant frequency of input vibrations closely matches the device resonant frequency. The limited scope of such devices has sparked an interest in the use of nonlinear oscillators as mechanisms for broadband energy harvesting. In this study, we investigate the harvesting performance of an electromagnetic harvester sustaining oscillations through the phenomena of magnetic levitation. The nonlinear behavior of the …


Fall 2010 Engr 3399: Mechanical And Aerospace Systems I: Course Material: Assignment 3, Christopher Lee Aug 2011

Fall 2010 Engr 3399: Mechanical And Aerospace Systems I: Course Material: Assignment 3, Christopher Lee

Christopher Lee

Techniques for the design and analysis of mechanical and aerospace systems are studied through case projects that involve both computational analysis and experimental measurements. Topics will be selected from a range of possible topics such as vibration analysis, flexible body dynamics, aerodynamics, and aeroelasticity. Projects may include the design and construction of vibration absorbers or ambient vibration energy harvesting systems, the dynamics and stability of aerospace vehicles, lift and drag of airfoils, the control of flutter instabilities of elastic structures, the design and flight testing of a lighter-than-air-vehicle, or mission planning of aeronautical or aerospace systems.


Spring 2011 Engr 3399: Mechanical And Aerospace Systems Ii: Course Materials: Assignment 7, Christopher Lee Aug 2011

Spring 2011 Engr 3399: Mechanical And Aerospace Systems Ii: Course Materials: Assignment 7, Christopher Lee

Christopher Lee

A student team will work in the manner of a small engineering research and development company to develop a mechanical or aerospace system to address a current market need. A comprehensive system design will be developed based upon quantitative analysis using commercial simulation software. Prototypes systems will be fabricated, evaluated and refined to meet performance objectives. This semester will focus on the design and fabrication of a 'perching' landing gear system for a small autonomous or remotely controlled air vehicle. The landing gear will enable the air vehicle to grab a hold of and land upon tree branches. Mechanical aspects …


Spring 2011 Engr 3399: Mechanical And Aerospace Systems Ii: Course Materials: Assignment 9, Christopher Lee Aug 2011

Spring 2011 Engr 3399: Mechanical And Aerospace Systems Ii: Course Materials: Assignment 9, Christopher Lee

Christopher Lee

A student team will work in the manner of a small engineering research and development company to develop a mechanical or aerospace system to address a current market need. A comprehensive system design will be developed based upon quantitative analysis using commercial simulation software. Prototypes systems will be fabricated, evaluated and refined to meet performance objectives. This semester will focus on the design and fabrication of a 'perching' landing gear system for a small autonomous or remotely controlled air vehicle. The landing gear will enable the air vehicle to grab a hold of and land upon tree branches. Mechanical aspects …


Spring 2011 Engr 3399: Mechanical And Aerospace Systems Ii: Course Materials: Assignment 4, Christopher Lee Aug 2011

Spring 2011 Engr 3399: Mechanical And Aerospace Systems Ii: Course Materials: Assignment 4, Christopher Lee

Christopher Lee

A student team will work in the manner of a small engineering research and development company to develop a mechanical or aerospace system to address a current market need. A comprehensive system design will be developed based upon quantitative analysis using commercial simulation software. Prototypes systems will be fabricated, evaluated and refined to meet performance objectives. This semester will focus on the design and fabrication of a 'perching' landing gear system for a small autonomous or remotely controlled air vehicle. The landing gear will enable the air vehicle to grab a hold of and land upon tree branches. Mechanical aspects …


Spring 2011: Engr 2320: Mechanics Of Solids And Structures: Information About Course: Course Syllabus, Christopher Lee Aug 2011

Spring 2011: Engr 2320: Mechanics Of Solids And Structures: Information About Course: Course Syllabus, Christopher Lee

Christopher Lee

This course covers the principles of statics of structures and mechanics of materials. The focus is on the concepts of stress and strain as related to applied loads (axial, shear, torsion, bending) and to resulting deformation. Students will learn how the principles of mechanics can be applied to mechanical design through modeling, quantitative analysis, strain gauge measurements, and computational simulation. The use of a commercial finite element package is introduced.


Spring 2011 Engr 3399: Mechanical And Aerospace Systems Ii: Course Materials: Assignment 5, Christopher Lee Aug 2011

Spring 2011 Engr 3399: Mechanical And Aerospace Systems Ii: Course Materials: Assignment 5, Christopher Lee

Christopher Lee

A student team will work in the manner of a small engineering research and development company to develop a mechanical or aerospace system to address a current market need. A comprehensive system design will be developed based upon quantitative analysis using commercial simulation software. Prototypes systems will be fabricated, evaluated and refined to meet performance objectives. This semester will focus on the design and fabrication of a 'perching' landing gear system for a small autonomous or remotely controlled air vehicle. The landing gear will enable the air vehicle to grab a hold of and land upon tree branches. Mechanical aspects …


Fall 2010 Engr 3399: Mechanical And Aerospace Systems I: Course Material: Hopper Assignment, Christopher Lee Aug 2011

Fall 2010 Engr 3399: Mechanical And Aerospace Systems I: Course Material: Hopper Assignment, Christopher Lee

Christopher Lee

Techniques for the design and analysis of mechanical and aerospace systems are studied through case projects that involve both computational analysis and experimental measurements. Topics will be selected from a range of possible topics such as vibration analysis, flexible body dynamics, aerodynamics, and aeroelasticity. Projects may include the design and construction of vibration absorbers or ambient vibration energy harvesting systems, the dynamics and stability of aerospace vehicles, lift and drag of airfoils, the control of flutter instabilities of elastic structures, the design and flight testing of a lighter-than-air-vehicle, or mission planning of aeronautical or aerospace systems.


Spring 2011 Engr 3399: Mechanical And Aerospace Systems Ii: Course Materials: Assignment 6, Christopher Lee Aug 2011

Spring 2011 Engr 3399: Mechanical And Aerospace Systems Ii: Course Materials: Assignment 6, Christopher Lee

Christopher Lee

A student team will work in the manner of a small engineering research and development company to develop a mechanical or aerospace system to address a current market need. A comprehensive system design will be developed based upon quantitative analysis using commercial simulation software. Prototypes systems will be fabricated, evaluated and refined to meet performance objectives. This semester will focus on the design and fabrication of a 'perching' landing gear system for a small autonomous or remotely controlled air vehicle. The landing gear will enable the air vehicle to grab a hold of and land upon tree branches. Mechanical aspects …


Spring 2011 Engr 2320: Mechanics Of Solids And Structures: Information About Course: Course Schedule, Christopher Lee Aug 2011

Spring 2011 Engr 2320: Mechanics Of Solids And Structures: Information About Course: Course Schedule, Christopher Lee

Christopher Lee

This course covers the principles of statics of structures and mechanics of materials. The focus is on the concepts of stress and strain as related to applied loads (axial, shear, torsion, bending) and to resulting deformation. Students will learn how the principles of mechanics can be applied to mechanical design through modeling, quantitative analysis, strain gauge measurements, and computational simulation. The use of a commercial finite element package is introduced.


Fall 2010 Engr 3399: Mechanical And Aerospace Systems I: Course Material: Assignment 8, Christopher Lee Aug 2011

Fall 2010 Engr 3399: Mechanical And Aerospace Systems I: Course Material: Assignment 8, Christopher Lee

Christopher Lee

Techniques for the design and analysis of mechanical and aerospace systems are studied through case projects that involve both computational analysis and experimental measurements. Topics will be selected from a range of possible topics such as vibration analysis, flexible body dynamics, aerodynamics, and aeroelasticity. Projects may include the design and construction of vibration absorbers or ambient vibration energy harvesting systems, the dynamics and stability of aerospace vehicles, lift and drag of airfoils, the control of flutter instabilities of elastic structures, the design and flight testing of a lighter-than-air-vehicle, or mission planning of aeronautical or aerospace systems.


Spring 2011 Engr 2320: Mechanics Of Solids And Structures: Course Materials: Final Project Instructions, Christopher Lee Aug 2011

Spring 2011 Engr 2320: Mechanics Of Solids And Structures: Course Materials: Final Project Instructions, Christopher Lee

Christopher Lee

This course covers the principles of statics of structures and mechanics of materials. The focus is on the concepts of stress and strain as related to applied loads (axial, shear, torsion, bending) and to resulting deformation. Students will learn how the principles of mechanics can be applied to mechanical design through modeling, quantitative analysis, strain gauge measurements, and computational simulation. The use of a commercial finite element package is introduced.


Spring 2011 Engr 2320: Mechanics Of Solids And Structures: Course Materials: Robot Leg Exercise, Christopher Lee Aug 2011

Spring 2011 Engr 2320: Mechanics Of Solids And Structures: Course Materials: Robot Leg Exercise, Christopher Lee

Christopher Lee

This course covers the principles of statics of structures and mechanics of materials. The focus is on the concepts of stress and strain as related to applied loads (axial, shear, torsion, bending) and to resulting deformation. Students will learn how the principles of mechanics can be applied to mechanical design through modeling, quantitative analysis, strain gauge measurements, and computational simulation. The use of a commercial finite element package is introduced.


Fall 2010 Engr 3399: Mechanical And Aerospace Systems I: Course Material: Assignment 5, Christopher Lee Aug 2011

Fall 2010 Engr 3399: Mechanical And Aerospace Systems I: Course Material: Assignment 5, Christopher Lee

Christopher Lee

Techniques for the design and analysis of mechanical and aerospace systems are studied through case projects that involve both computational analysis and experimental measurements. Topics will be selected from a range of possible topics such as vibration analysis, flexible body dynamics, aerodynamics, and aeroelasticity. Projects may include the design and construction of vibration absorbers or ambient vibration energy harvesting systems, the dynamics and stability of aerospace vehicles, lift and drag of airfoils, the control of flutter instabilities of elastic structures, the design and flight testing of a lighter-than-air-vehicle, or mission planning of aeronautical or aerospace systems.


Fall 2010 Engr 3399: Mechanical And Aerospace Systems I: Course Material: Assignment 2, Christopher Lee Aug 2011

Fall 2010 Engr 3399: Mechanical And Aerospace Systems I: Course Material: Assignment 2, Christopher Lee

Christopher Lee

Techniques for the design and analysis of mechanical and aerospace systems are studied through case projects that involve both computational analysis and experimental measurements. Topics will be selected from a range of possible topics such as vibration analysis, flexible body dynamics, aerodynamics, and aeroelasticity. Projects may include the design and construction of vibration absorbers or ambient vibration energy harvesting systems, the dynamics and stability of aerospace vehicles, lift and drag of airfoils, the control of flutter instabilities of elastic structures, the design and flight testing of a lighter-than-air-vehicle, or mission planning of aeronautical or aerospace systems.


Spring 2011 Engr 3399: Mechanical And Aerospace Systems Ii: Information About Course: Course Syllabus, Christopher Lee Aug 2011

Spring 2011 Engr 3399: Mechanical And Aerospace Systems Ii: Information About Course: Course Syllabus, Christopher Lee

Christopher Lee

A student team will work in the manner of a small engineering research and development company to develop a mechanical or aerospace system to address a current market need. A comprehensive system design will be developed based upon quantitative analysis using commercial simulation software. Prototypes systems will be fabricated, evaluated and refined to meet performance objectives. This semester will focus on the design and fabrication of a 'perching' landing gear system for a small autonomous or remotely controlled air vehicle. The landing gear will enable the air vehicle to grab a hold of and land upon tree branches. Mechanical aspects …


Spring 2011 Engr 3399: Mechanical And Aerospace Systems Ii: Course Materials: Assignment 1, Christopher Lee Aug 2011

Spring 2011 Engr 3399: Mechanical And Aerospace Systems Ii: Course Materials: Assignment 1, Christopher Lee

Christopher Lee

A student team will work in the manner of a small engineering research and development company to develop a mechanical or aerospace system to address a current market need. A comprehensive system design will be developed based upon quantitative analysis using commercial simulation software. Prototypes systems will be fabricated, evaluated and refined to meet performance objectives. This semester will focus on the design and fabrication of a 'perching' landing gear system for a small autonomous or remotely controlled air vehicle. The landing gear will enable the air vehicle to grab a hold of and land upon tree branches. Mechanical aspects …


Spring 2011 Engr 2320: Mechanics Of Solids And Structures: Course Materials: Exam 1, Christopher Lee Aug 2011

Spring 2011 Engr 2320: Mechanics Of Solids And Structures: Course Materials: Exam 1, Christopher Lee

Christopher Lee

This course covers the principles of statics of structures and mechanics of materials. The focus is on the concepts of stress and strain as related to applied loads (axial, shear, torsion, bending) and to resulting deformation. Students will learn how the principles of mechanics can be applied to mechanical design through modeling, quantitative analysis, strain gauge measurements, and computational simulation. The use of a commercial finite element package is introduced.


Fall 2010 Engr 3399: Mechanical And Aerospace Systems I: Course Material: Assignment 7, Christopher Lee Aug 2011

Fall 2010 Engr 3399: Mechanical And Aerospace Systems I: Course Material: Assignment 7, Christopher Lee

Christopher Lee

Techniques for the design and analysis of mechanical and aerospace systems are studied through case projects that involve both computational analysis and experimental measurements. Topics will be selected from a range of possible topics such as vibration analysis, flexible body dynamics, aerodynamics, and aeroelasticity. Projects may include the design and construction of vibration absorbers or ambient vibration energy harvesting systems, the dynamics and stability of aerospace vehicles, lift and drag of airfoils, the control of flutter instabilities of elastic structures, the design and flight testing of a lighter-than-air-vehicle, or mission planning of aeronautical or aerospace systems.


Spring 2011 Engr 2320: Mechanics Of Solids And Structures: Course Materials: Final Exam, Christopher Lee Aug 2011

Spring 2011 Engr 2320: Mechanics Of Solids And Structures: Course Materials: Final Exam, Christopher Lee

Christopher Lee

This course covers the principles of statics of structures and mechanics of materials. The focus is on the concepts of stress and strain as related to applied loads (axial, shear, torsion, bending) and to resulting deformation. Students will learn how the principles of mechanics can be applied to mechanical design through modeling, quantitative analysis, strain gauge measurements, and computational simulation. The use of a commercial finite element package is introduced.


Spring 2011 Engr 3399: Mechanical And Aerospace Systems Ii: Course Materials: Assignment 3, Christopher Lee Aug 2011

Spring 2011 Engr 3399: Mechanical And Aerospace Systems Ii: Course Materials: Assignment 3, Christopher Lee

Christopher Lee

A student team will work in the manner of a small engineering research and development company to develop a mechanical or aerospace system to address a current market need. A comprehensive system design will be developed based upon quantitative analysis using commercial simulation software. Prototypes systems will be fabricated, evaluated and refined to meet performance objectives. This semester will focus on the design and fabrication of a 'perching' landing gear system for a small autonomous or remotely controlled air vehicle. The landing gear will enable the air vehicle to grab a hold of and land upon tree branches. Mechanical aspects …


Spring 2011 Engr 2320: Mechanics Of Solids And Structures: Course Materials: Exam 2, Christopher Lee Aug 2011

Spring 2011 Engr 2320: Mechanics Of Solids And Structures: Course Materials: Exam 2, Christopher Lee

Christopher Lee

This course covers the principles of statics of structures and mechanics of materials. The focus is on the concepts of stress and strain as related to applied loads (axial, shear, torsion, bending) and to resulting deformation. Students will learn how the principles of mechanics can be applied to mechanical design through modeling, quantitative analysis, strain gauge measurements, and computational simulation. The use of a commercial finite element package is introduced.


Spring 2011 Engr 3399: Mechanical And Aerospace Systems Ii: Course Materials: Assignment 8, Christopher Lee Aug 2011

Spring 2011 Engr 3399: Mechanical And Aerospace Systems Ii: Course Materials: Assignment 8, Christopher Lee

Christopher Lee

A student team will work in the manner of a small engineering research and development company to develop a mechanical or aerospace system to address a current market need. A comprehensive system design will be developed based upon quantitative analysis using commercial simulation software. Prototypes systems will be fabricated, evaluated and refined to meet performance objectives. This semester will focus on the design and fabrication of a 'perching' landing gear system for a small autonomous or remotely controlled air vehicle. The landing gear will enable the air vehicle to grab a hold of and land upon tree branches. Mechanical aspects …