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Deflection of Beam. Pairat Tanpornprasert , Ph.D. Niphon Wansophark , Ph.D Mechanical Engineering Department Faculty of Engineering Chulalonkorn University. Introduction. A beam is defined as a structural member which cross-sectional dimensions are relatively smaller than its length

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deflection of beam

Deflection of Beam

Pairat Tanpornprasert , Ph.D.

Niphon Wansophark , Ph.D

Mechanical Engineering Department

Faculty of Engineering

Chulalonkorn University

introduction
Introduction
  • A beam is defined as a structural member which cross-sectional dimensions are relatively smaller than its length
  • A beam is subjected to loads perpendicular to its long dimension
  • Beam deflections are considered to be elastic deflections
introduction con
Introduction (con’)
  • The design of beams is often based on deflection characteristics, rather than strength
  • Beams are used in different kinds of construction

- Machine

- Bridges

- Airplanes

- Automotives

- etc,

robots
Robots

Intelligence and networking

motivation
Motivation
  • The deflection of machine parts must also be kept below certain tolerances to allow the machine to function properly

- Difficulties in parts assembly and installation

- Unbalance in rotating shaft

  • Large deflection cause or create unstable structure

- Floor collapse

- Bridge collapse

motivation con
Motivation (con’)
  • Precision machine needs rigid structure

- Machine tool

- Robotics

- Measuring Instrument

  • Allowable deflection of beams are often limited
  • Stresses are also limited
mississippi river bridge
Mississippi River Bridge

collapsed on August 1, 2007