AO4076 Vibration Isolation and Control Syllabus:
AO4076 Vibration Isolation and Control Syllabus – Anna University PG Syllabus Regulation 2021
COURSE OBJECTIVES:
This course will enables students
1. To get insight into the basic aspects of vibration theory.
2. To get in-depth knowledge on different types of isolators and its effectiveness.
3. To provide the basic knowledge on dynamic vibration absorber.
4. To realize the importance of materials selection for appropriate applications.
5. To get knowledge on the principles of active vibration control.
UNIT I BASIC VIBRATION THEORY
Free Vibration Theory – Determination of Natural Frequency of a Single Degree Of Freedom – System– Response of a Damped Single Degree of Freedom System – Role of Damping – Forced Vibrations of Discrete Systems – Continuous Systems – Vibrations of Beams and Shafts – Idealization of a Real System Into a Discrete Model – Resonance – An Overview of the Different Methods of Vibration Control
UNIT II VIBRATION ISOLATION
Transmissibility – Numerical Examples – Necessity of Vibration Isolation – Vibration Reduction at Source – System Redesign – Different Types of Isolators & Their Effectiveness – Pneumatic Suspension – Excitation Reduction at Source and Factors Affecting Vibration Level – Source Classification – Control of Flow Induced & Self-Excited Systems
UNIT III DYNAMIC VIBRATION ABSORBER
Dynamic Vibration Neutralizers – Self-tuned Pendulum Neutralizer – Optimum Design of Damped Absorbers – Absorber with ideal spring and viscous dashpot – Gyroscopic vibration absorbers – Impact Absorbers – Absorbers attached to continuous systems – Field Balancing of Rotors – Resonance: Detuning and Decoupling – Remedial Measures
UNIT IV SELECTION OF MATERIALS
Dynamic Properties of Viscoelastic Material – Selection of Materials – Damping-Stress Relationship – Selection Criteria for Linear Hysteretic Material – Design for enhanced material damping – Linear Viscoelastic Model – Constrained Layer Damping – Relaxation – Frequency and Temperature Dependence of the Complex Modulus – Overview and Role of Smart Materials
UNIT V PRINCIPLES OF ACTIVE VIBRATION CONTROL
Conceptual Understanding – Shape Memory Actuators for Vibration Control – Shape Memory Materials – Tuned Vibration Absorbers using SMA – Basics of Electro-and Magneto-Rheological Fluids – Active Vibration Isolation using ERF and MRF – Methods of Active Vibration Control Using Piezoelectric Materials – Derivation of Governing Equations – Response of the Structure.
TOTAL: 45 PERIODS
COURSE OUTCOMES:
At the end of this course, students will be able
CO1: To realise the importance of vibration theory & its practical applications
CO2: To work out response calculations
CO3: To analyse and compare the different methods of vibration control
CO4: To exposure on vibration control using smart materials
CO5: To design a vibration control unit.
REFERENCES:
1. Malcolm J. Crocker, “Handbook of Noise and Vibration Control”, Wiley; 1st edition, 2007.
2. Mallik, AK, “Principles of Vibration Control”,Affiliated East-West Press, India, 1990.
3. Mead,DJ, “Passive Vibration Control”, Wiley, 1st edition, 1999.
4. Preumont,A“Vibration Control of Active Structures”, Springer Netherlands, 3rd edition, 2011.