Mechanics of Machines Dr. Mohammad Kilani

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Mechanics of MachinesDr. Mohammad Kilani

• Class 1
• Introduction

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Mechanics
Mechanics is the branch of physical science
concerned with the behavior of physical bodies
when subjected to forces or displacements, and
the subsequent effects of the bodies on their
environment. www.wikipedia.com
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Machines

• A machine is a tool that uses energy to achieve a
  particular goal.
• Machines are usually powered by mechanical,
  chemical, thermal, or electrical means, and are
  frequently motorized.
• A mechanical machine consists of one or more
  parts, and is used to transforms the direction or
  magnitude of a force.

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Mechanisms

• A mechanism is a device designed to transform
  input forces and movement into a desired set of
  output forces and movement.
• Mechanisms generally consist of moving components
  such as gears and gear trains, belt and chain
  drives, cam and follower mechanisms, and linkages
  as well as friction devices such as brakes and
  clutches, and structural components such as the
  frame, fasteners, bearings, springs, lubricants
  and seals, as well as a variety of specialized
  elements such as splines, pins and keys.