MATLAB SIMMECHANICS 3 - VISUALIZATION AND IMPORT GUIDE Manual do Utilizador descarregar pdf (Página 15)

Multibody M odel Anatomy

relationships between the three solids. You use them to position the peg and

hole sections at the ends o f the main section.

Applying Forces and Torques

You can actuate a model by applying a force or torque to a rigid body or to a

joint. To represent forces and torques acting on a rigid body, SimMechanics

provides a Forces and Torques library. Drag a block from this library and

connect it to the rigid body frame(s) that you want to apply the force or torque

to.

One block represents an external force or torque—External Force and Torque.

The other blocks represent internal forces between two rigid body frames.

You can represent a general internal force, using the Internal Force block,

or a specific internal force type, using Spring and Damper Force and Inverse

Square Law F orce blocks. The figure shows how you can use the External

Force block to actuate the crank link of the four-bar model.

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