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Beams Index

Simple Beams

Introduction

Simple beams are straight of single span and are generally simply supported and are therefore statically determinate using the static equilibrium laws.   The single cantilever beam which is built in at one end comes within this category.

There are three basic types of supported beam.  Other beam types can be obtained by combining these three ..

Beam loading

Beams can be loaded in a variety of ways.

  • Concentrated loads
  • Uniformly distributed loads
  • Distributed loads according to some pattern
  • Concentrated moments

The superposition principle provides convenient method of calculating the stresses and deflections for beams subject to a number of different loads.  The effect of each load can be established seperately and the effect of all the loads acting simultaneously can be obtained by summing the seperate results...

Beam Sections

Beams normally have constant sections which for structural work include a variety of forms many of which are included in the sections part of this website ( Sections ).   In mechanical engineering, generally, the sections considered are round sections (shafts), or rectangular sections.  Beams with sections which vary along their length are often encountered i.e when completing beam calculations for springs, and gear teeth.  These special cases are dealt with in the notes related to these specific topics

Beam loading formulea
A number of the standard beam loading formulea are provided on this website Stress -Strain





Sites Providing Relevant Information
  1. Beams, Bending, and Boundary Conditions ...Very simple basic initial notes include review of beam loading types
  2. Beam Types...Efunda -Information on beams with easy to use calculators- Subscription required for extended access
  3. xcalcs... Section information and Calculations

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Last Updated 25/01/2013