Basics of Model Building
Parts define the objects in your model that can have mass and inertia properties and can move. All forces
and constraints that you define in your model act on these parts during a simulation. The next sections
explain more about parts:
Types of Parts
Adams/View provides you with three different types of parts that you can create:
• Rigid Bodies
• Flexible Bodies - Basic Adams/View provides you with the ability to create discrete flexible
links. For more functionality, you can purchase Adams/Flex. For information on purchasing
Adams/Flex, see your MSC sales representative, and for information on using Adams/Flex, refer
to Adams/Flex online help.
• Point Masses
In addition, Adams/View provides a ground part that is already created for you.
Local Coordinate Systems
As you create parts, Adams/View assigns a coordinate system to each part, known as its local coordinate
system. A part’s local coordinate system moves with the part and its original position defaults to that of
the global coordinate system.
The local coordinate system is a convenient way to define the position and location of objects.
Adams/View also returns simulation results, such as the position of a part, as the displacement of a part’s
local coordinate system with respect to the global coordinate system. It returns object results, however,
as the displacement of a part’s center of mass relative to the global coordinate system.
Degrees of Freedom
Each rigid body that you create can move within all degrees of freedom; a point mass can move within
three translational degrees of freedom. You can constrain the movement of parts by:
• Adding them to the ground part, which means they are fixed to the ground and cannot move in
any direction. Each time you create geometry, Adams/View gives you the option to add it to
ground, create a new part, or add it to an existing part.
• Adding constraints, such as joints, to define how the parts are attached and how they move
relative to each o