18GEPC03 SOIL DYNAMICS AND MACHINE FOUNDATIONS L T P C 3 003 COURSE OBJECTIVE To design different types of machine foundations based on the dynamic properties of soils and to get an exposure on vibration isolation techniques. COURSE OUTCOMES At the end of the course, students will be able to CO1 :Acquire knowledge to apply theories of vibration to solve dynamic soil problems. CO2 :Evaluate the dynamic properties of soil using laboratory and field tests. CO3 :Acquire basic knowledge about machine foundations and design various types of machine foundation CO4:To know and capable of selecting the types of vibration isolation materials CO5:To apply vibration isolation techniques for various field problems.. UNIT I THEORY OF VIBRATION (09) Introduction Nature of dynamic loads Basic definitions Simple harmonic motion – – – Fundamentals of vibration Single degree and multi degree of freedom systems Free – – – vibrations of spring Mass systems Forced vibrations Resonance Viscous damping – – – – – Principles of vibrations measuring systems Effect of transient and pulsating loads. – UNIT II DYNAMIC SOIL PROPERTIES (09) Dynamic stress-strain characteristics Principles of measuring dynamic properties – – Laboratory techniques Field tests Block vibration test Factors affecting dynamic – – – properties Typical values. Mechanism of liquefaction Influencing factors Evaluation of – – – liquefaction potential Analysis from SPT test Dynamic bearing capacity Dynamic earth – – – pressure. UNIT III MACHINE FOUNDATIONS (09) Introduction of machine foundations General requirements for design of – – machine foundations Design approach for machine foundation Vibration analysis – – – Elastic Half-Space theory Mass-spring-dashpot model Permissible amplitudes – – – Permissible bearing pressures. UNIT IV DESIGN OF MACHINE FOUNDATION (09) Evaluation of design parameters Types of Machines and foundations General – – requirements their importance Analysis and design of block type and framed type – – machine foundations Modes of vibration of a rigid foundation Foundations for – – reciprocating machines, impact machines, Two Cylinder vertical compressor, – steam hammer approach Barken’s method –Codalrecommendations.Emprical – – Bulb of pressure concept Pauw’s analogy Vibration table studies. – – UNIT V VIBRATION ISOLATION (09) Vibration isolation Types of isolation Transmissibility Passive and active – – – isolation Methods of isolation Use of springs and damping materials Properties of – – – isolating materials Vibration control of existing machine foundation. – 45hrs REFERENCE BOOKS:
18GEPC03 SOIL DYNAMICS AND MACHINE FOUNDATIONS L T P C 3 003 COURSE OBJECTIVE To design different types of machine foundations based on the dynamic properties of soils and to get an exposure on vibration isolation techniques. COURSE OUTCOMES At the end of the course, students will be able to CO1 :Acquire knowledge to apply theories of vibration to solve dynamic soil problems. CO2 :Evaluate the dynamic properties of soil using laboratory and field tests. CO3 :Acquire basic knowledge about machine foundations and design various types of machine foundation CO4:To know and capable of selecting the types of vibration isolation materials CO5:To apply vibration isolation techniques for various field problems.. UNIT I THEORY OF VIBRATION (09) Introduction – Nature of dynamic loads – Basic definitions – Simple harmonic motion – Fundamentals of vibration – Single degree and multi degree of freedom systems – Free vibrations of spring – Mass systems – Forced vibrations – Resonance – Viscous damping – Principles of vibrations measuring systems – Effect of transient and pulsating loads. UNIT II DYNAMIC SOIL PROPERTIES (09) Dynamic stress-strain characteristics – Principles of measuring dynamic properties – Laboratory techniques – Field tests – Block vibration test – Factors affecting dynamic properties – Typical values. Mechanism of liquefaction – Influencing factors – Evaluation of liquefaction potential – Analysis from SPT test – Dynamic bearing capacity – Dynamic earth pressure. UNIT III MACHINE FOUNDATIONS (09) Introduction – of machine foundations – General requirements for design of machine foundations – Design approach for machine foundation – Vibration analysis – Elastic Half-Space theory – Mass-spring-dashpot model – Permissible amplitudes – Permissible bearing pressures. UNIT IV DESIGN OF MACHINE FOUNDATION (09) Evaluation of design parameters – Types of Machines and foundations – General requirements – their importance – Analysis and design of block type and framed type machine foundations – Modes of vibration of a rigid foundation – Foundations for reciprocating machines, impact machines, Two – Cylinder vertical compressor, steam hammer –Codalrecommendations.Emprical approach – Barken’s method – Bulb of pressure concept – Pauw’s analogy – Vibration table studies. UNIT V VIBRATION ISOLATION (09) Vibration isolation – Types of isolation – Transmissibility – Passive and active isolation – Methods of isolation – Use of springs and damping materials – Properties of isolating materials – Vibration control of existing machine foundation. 45hrs REFERENCE BOOKS: