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MECHANISM - MACHINES - EQUIPMENTS

  • AGRICULTURE INDUSTRIES
  • AUTOMATION INDUSTRIES
  • CONSTRUCTION INDUSTRIES
  • TEXTILE INDUSTRIES
  • GARMENT INDUSTRIES
  • MACHINE BUILDING INDUSTRIES
  • BULK HANDLING INDUSTRIES
  • MINERAL PROCESSING INDUSTRIES
  • AUTOMOBILE INDUSTRIES
  • OEM INDUSTRIES
  • PRINTING INDUSTRIES
  • PACKAGING INDUSTRIES
  • PLASTIC INDUSTRIES
  • RUBBER INDUSTRIES
  • TESTING MACHINE INDUSTRIES
  • SPACE INDUSTRIES
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Applications

While single bodies or parts of a mechanical system are studied in detail with finite element methods, the behavior of the whole multibody system is usually studied with multibody system methods within the following areas:

Aerospace engineering - helicopter, landing gears, behavior of machines under different gravity conditions

Bio mechanics

Combustion engine, gears and transmissions, chain drive, belt drive

Dynamic simulation* Vehicle simulation (vehicle dynamics, rapid prototyping of vehicles, improvement of stability, comfort optimization, improvement of efficiency, ...)

Hoist, conveyor, paper mill

Military applications

Particle simulation (granular media, sand, molecules)

Physics engine

Robotics

TOWER CRANE ANALYSIS

Concept

A body is usually considered to be a rigid or flexible part of a mechanical system (not to be confused with the human body). An example of a body is the arm of a robot, a wheel or axle in a car or the human forearm. A link is the connection of two or more bodies, or a body with the ground. The link is defined by certain (kinematical) constraints that restrict the relative motion of the bodies. Typical constraints are:

  • cardan joint or Universal Joint ; 4 kinematical constraints

  • prismatic joint; relative displacement along one axis is allowed, constrains relative rotation; implies 5 kinematical constraints

  • revolute joint; only one relative rotation is allowed; implies 5 kinematical constraints; see the example above

  • spherical joint; constrains relative displacements in one point, relative rotation is allowed; implies 3 kinematical constraints

There are two important terms in multibody systems: degree of freedom and constraint condition


GEAR SYSTEM
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