Unit 1 Theory of Vibration

8 lecture hours

• Introduction – Nature of dynamic loads – vibrations of single degree freedom system – free vibrations of spring – mass systems – forced vibrations – viscous damping
• Transmissibility – Principles of vibration measuring instruments effect of Transient and Pulsating loads – vibrations of multi degree freedom system

Unit 2 Dynamic Soil Properties and Behaviour

10 lecture hours

• Dynamic stress – strain characteristics – principles of measuring dynamic properties – Laboratory Techniques – Field tests – Factors affecting dynamic properties - Typical values- Dynamic bearing capacity – Dynamic earth pressure

Unit 3 Foundations for Reciprocating Machines

8 lecture hours

• Types of Machines and Foundations – General requirements – Modes of vibration of a rigid foundation
• block method of analysis – Linear Elastic weightless spring method – Elastic half – space method – Analog models
• Design of Block foundation -- Codal Provisions

Unit 4 Foundation for Impact and Rotary Machines

• Dynamic analysis of impact type machines – Design of Hammer foundations – use of vibrator Absorbers – design – Codal recommendation
• Special consideration for Rotary machines – Design criteria – Loads on Turbo Generator Foundation – method of analysis – Design
• Dynamic soil – structure – Interaction
• Codal Provisions. 8 Subject Code 3724312 w.e.f

Unit 5 Liquefaction and Vibration Isolation

8 lecture hours

• Mechanism of Liquefaction–Influencing factors--Evaluation of Liquefaction potential based on SPT-Force Isolation – Motion Isolation – use of spring and damping materials – vibration control of existing machine foundation – screening of vibration – open trenches – Pile Barriers – salient construction aspects of machine Foundations