ME 708 Techniques for Vibration Control and Isolation

Instructor

Asst. Prof. Gökhan O. Özgen

Contact the instructor if you have any questions regarding this course.

gozgen@metu.edu.tr

0-312-2105264

B-316

Place and Time (Fall 2013-2014):

B-202 on Monday 9:40-12:40

Course Objectives

· Main objective of this course is to teach students the techniques for control and isolation of structural vibrations in mechanical systems.

· Special emphasis will be made on passive techniques while semi-active and active techniques are also briefly discussed.

· The students who take this course will become familiar with a wide range vibration control and isolation techniques which will enable them to identify the type of vibration problem they investigate and to solve the identified vibration problem choosing and implementing a suitable method among the techniques discussed in this course.

Course Grading

Homeworks, Midterm Exam (Take-Home), Term Project, Final Exam

Textbook

1. Course Notes in PDF provided by the instructor (Shared through METU-ONLINE)

2. C.W. De Silva (Ed.), Vibration Damping, Control, and Design, Taylor & Francis, 2007. (available in the library reserve section).

3. E.I. Rivin, Passive Vibration Isolation, ASME Press, 2003. (available in the library reserve section).

Note that these books will be loosely followed.

Course Outline

1. INTRODUCTION

2. REVİEW OF VİBRATİON FUNDAMENTALS

2.1. Single DOF Systems.

2.2. Multi DOF Systems.

2.3. Modal Analysis.

3. VIBRATION_CONTROL_FUNDAMENTALS

3.1. Vibration Control

3.2. Passive Vibration Control

3. PASSİVE VİBRATİON CONTROL

4.1. Vibration Damping

4.2. Mechanisms Of Damping in Materials And Mechanical Structures

4.3. Measures Of Damping

4.4. Viscoelastic Vibratıon Damping

4.4.1. Theory Of Linear Viscoelasticity

4.4.2. Typical Viscoelastic Material Behavior as a Functıon Of Temperature

4.4.3. Effects of Frequency on Viscoelastic Material Properties

4.4.4. Effect Of Dynamic Strain Amplitude On Viscoelastic Material Properties

4.4.5. Preload Dependence of Viscoelastıc Material Properties

4.4.6. Temperature-Frequency Equivalence Of Viscoelastic Material Properties (Thermorheologically Simple Materials)

4.4.7. Measurement Of Frequency And Time-Dependent Viscoelastic Material Properties

4.4.8. Mathematical Representation Of Measured Complex Modulus Data

4.5. Surface Dampıng Treatments – Desıgn And Optımızatıon

4.5.1. Damping Treatments

4.5.2. Surface Damping Treatments

4.5.3. Free Layer Damping Treatments

4.5.4. Constrained-Layer Damping Treatments

4.6 Tuned Vibration Absorbers - Design And Optimization

4.7. Piezoshunt Dampers – Analysis And Design

5. PASSİVE VİBRATİON ISOLATİON

5.1. Overview Of Vibration Isolation Theory And Practice

5.2. Dynamics Of SDOF Vibration Isolation Systems

5.3. Vibration Isolators

5.4. Dynamics of a Resiliently Supported 6 DOF Rigid Body

6. Design of Structures for Optimum Vibration Behaviour

6.1. Design Sensitivity Analysis Of Structural Vibration Modes

6.2. Optimization Techniques

6.3. Topology Optimization

6.4. Objective Functions For Structural Dynamics Behavior

6.5. Structural Dynamics Optimization Applications

7. Advanced Topics in Vibration Control and Isolation

7.1. Semi-Active vibration control

7.2. Active vibration control

7.3. Semi-Active vibration isolation

7.4. Active vibration isolation