Rigid means something that will hold its shape on its own. Wood (except veneer), drywall, backer-board are all rigid. A piece of thin paneling made from plastic/fiberglass would not probably count.Nov 13, 2012
What is an analytical surface?
Analytical rigid surfaces are geometric surfaces with profiles that can be described with straight and curved line segments. These profiles can be swept along a generator vector or rotated about an axis to form a three-dimensional surface.
What is the difference between discrete rigid and analytical rigid?
On a very simple note: Analytical rigid surfaces are defined mathematically using lines and arcs, whereas Discrete rigid surfaces are meshed using rigid elements. Basically, if your rigid surface can be created by extruding or revolving lines and arcs then use analytical. If not, then you have to use discrete rigid.
What is rigid body in Abaqus?
In ABAQUS a rigid body is a collection of nodes and elements whose motion is governed by the motion of a single node, known as the rigid body reference node, as shown in Figure 3–7.
How many degrees of freedom is the reference point for a rigid analytical body?
six degrees of freedom
Although the motion of the rigid body is governed by the six degrees of freedom at the reference node, rigid bodies allow accurate representation of the geometry, mass, and rotary inertia of the rigid body.
What is discrete rigid?
Discrete rigid. A discrete rigid part is similar to a deformable part in that it can be any arbitrary shape. However, a discrete rigid part is assumed to be rigid and is used in contact analyses to model bodies that cannot deform.
What are some examples of rigid bodies?
– Examples: Smoke, Fire, Water, Wind, Leaves, Cloth, Magnets, Flocks, Fish, Insects, Crowds, etc.
What is constraint in a rigid body?
Constraints are essentially rules that must be satisfied during the simulation, such as “the distance between these two particles should not be greater than 2” or “these two points on this pair of rigid bodies should coincide at all times”. In other words, a constraint removes degrees of freedom from a rigid body.
