BDA31103_LECT01 -INTRODUCTION_Complete - BDA 31103 –...

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BDA 31103 –VIBRATION LECTURE 1 – FUNDAMENTAL OF VIBRATION MR MOHD AMRAN BIN HJ. MADLAN Faculty of Mechanical & Manufacturing Engineering Universiti Tun Hussein Onn Malaysia
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square6 What is vibration? square6 Why it is important? square6 Basic Concepts…….. square6 Classification of Vibration…. square6 Definition and Terminology ….. square6 Vibration Analysis Procedure….. square6 Spring, Mass and Damping Elements….. square6 Harmonic and Periodic Motions……. OUTLINE [email protected] 2
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DEFINITION Vibration : Any motion that repeats itself after an interval of time is called vibration or oscillation. The swinging of a pendulum and the motion of a plucked string are typical examples of vibration. The study of vibration deals with the study of oscillatory motions of bodies and the forces associated with them. From Encyclopedia Britannica: Periodic back-and-forth motion of the particles of an elastic body or medium, commonly resulting when almost any physical system is displaced from its equilibrium condition and allowed to respond to the forces that tend to restore equilibrium . [email protected] 3
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WHY STUDY VIBRATION? 1. Vibrations can lead to excessive deflections and failure on the machines and structures 2. To reduce vibration through properdesign of machines and their mountings 3.
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