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The Australian Maritime College is an institute of the University of Tasmania CRICOS Provider Code: 00586B Websites: AMC: www.amc.edu.au, UTAS: www.utas.edu.au

Main topics of Lecture 1 Introduction to Syllabus/Unit Outline Chapter 1 Introduction to Ship Vibration

Oasis of the Seas (courtesy of http://www.oasisoftheseas.com)

SHIP VIBRATION Lecture 1 IntroductionBy Dr. Hung Nguyen National Centre for Maritime Engineering and Hydrodynamics Australian Maritime College/University of Tasmania Launceston, Tasmania, Australia

Basic concepts of vibration I Importance of vibration study t f ib ti t d Case study: Tacoma Bridge Collapse in 1940 Overview of ship vibration

Classification of vibration Vibration analysis procedure Harmonic motion (a review)

Unit Outline Contents

Unit OutlineChapter 1, 2, 3 Contents Fundamentals of Vibration Duration (hours) References [1,2]

Description Basic knowledge and understanding of mechanical vibrations applications of theory of vibration into study of ship hull vibration, prevention and avoindance of vibration in shipsIntroduction to Ship Vibration Free Vibration of Single DOF System Forced Vibration of S-DOF Systems Vibration of Two & Multi-DOF Systems4, 5, 6 7 8

15 5 10 TBA [1,2] [1,2,3,4,7]

Learning Objectives See handout

Torsional Vibration Continuous VibrationShip Vibration Hull girder vibration Experimental Investigation

Unit Outline Learning ScheduleDay Date Topic Introduction Fundamentals of Vibration (free vibration, damped vibration, forced vibration of S-DOF systems) Vibration of 2-DOF and MDOF Systems Continuous Vibration Ship Vibration Exam Readings / Problems h Chapters 1-3 Chapters 4-5 Chapters 6 Chapter 7 Assessment

Unit Outline Assessment information No 1 2 3 4 Assessment Component Test Practical/Lab Tutorial/Homework Assignment Final exam Weighting (%) 20 20 60

Due/Detail Day 3 N/A Continuous N/A TBA

1

14/12 (Mon)

Homework/Tute

2 3 4 5

15/12 (Tue) 16/12 (Wed) 17/12 (Thu) 18/12 (Fri)

Homework/Tute Class Test Homework/Tute

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Unit Outline Textbooks and References Required textbook: Rao, S.S. (2005). Mechanical Vibrations, 4th Edition in SI Units. Pearson Education.

Unit Outline E-learning resources Lecturers website: http://academic.amc.edu.au/~hnguyen/shipvib/ship vib.html

Books in Vietnamese Books in English Ship Vibration (GL)

Unit Outline Organisation of Lecture Notes Chapter 1 Introduction to Ship Vibration (Nhp mn dao ng tu thy) Chapter 2 Free Vibration (S-DOF Systems) (Dao ng t do H mt bc t do) Chapter 3 Forced Vibration (S-DOF Systems) (Dao ng cng bc H mt bc t to) Chapter 4 Multi DOF Systems (H nhiu bc t do) Chapter 5 Torsional Vibration (Dao ng xon) Chapter 6 Continuous Vibration (Dao ng lin tc) Chapter 7 Ship Vibration (Dao ng tu thy)

Any Questions?

Chapter 1 Introduction Basic concepts of vibration Vibration Oscillation/oscillatory motion Elementary parts of vibration systems Example: Simple Pendulum Displacement Velocity Acceleration Frequency

Chapter 1 Introduction Basic concepts of vibration Degree of Freedom (DOF): minimum number of independent coordinates

Degree of freedom (DOF) Discrete and Continuous SystemsFigure 2 One degree of freedom systems (Rao, 2005)

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Bending and twisting of a catamaran

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Chapter 1 Introduction

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Chapter 1 Introduction Harmonic motion: Definitions and terminology Cycle (chu trnh) Amplitude (bin ) Period (chu k) Frequency (Tn s) Phase angle (Gc pha) Natural frequency (Tn s t nhin) Beat (Nhp p) Decibel ( xi ben)

Chapter 1 Introduction Vibration computation and simulation tools MathWorks: MATLAB/Simulink & Toolboxes National Instruments: LabVIEW & Modules ANSYS: www.ansys.com www ansys com Programming languages Numerical methods Eulers method, Runge-Kutta method, Fourier, etc.

Finite Element Methods

Chapter 1 Summary of Chapter 1 Basic concepts of vibration Importance of vibration study Case study: Tacoma Bridge Collapse in 1940 Overview of ship vibration

References & Further Reading Hybrid (solar) vessel/ferry: http://www.solarsailor.com/ Vibration simulation (Flash): http://www.cfa.harvard.edu/~jbattat/pitf/engin125/ M. Norton and D. Karczub (2003). Fundamentals of Noise and Vibration Analysis for Engineers. Cambridge University Press. Cambridge. UK. Silva, C W Practice. De Silva C.W. Vibration Fundamentals and Practice Taylor and Francis. 2007. Thomson, W.T., Theory of Vibration with Applications, 4th Ed, Chapman & Hall, London, 1993. Rao, S.S., Mechanical Vibration, Addison-Wesley Publishing Co, Massachusetts, 1985. Fahy, F. and H. Walker. Fundamentals of Noise and Vibration. Spon Press (Taylor and Francis Group). E-learning source: http://academicearth.org/courses/physics-iiivibrations-and-waves

Classification of vibration Vibration analysis procedure Harmonic motion (a review) Displacement, velocity, acceleration, frequency Definitions and terminology

Any Questions?

Chapter 1 Introduction Tutorial 1 Harmonic Motion

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