*RevJointPair()
Creates a revolute joint pair.
Syntax
*RevJointPair(joint_name,"joint_label",body_1, body_2, origin, POINT|VECTOR, point|vector, [ALLOW_COMPLIANCE])
Arguments
- joint_name
- The variable name of the revolute joint pair.
- joint_label
- The descriptive label of the revolute joint pair.
- body_1
- The first body or body pair constrained by the revolute joint pair.
- body_2
- The second body or body pair constrained by the revolute joint pair.
- origin
- The location(s) of the revolute joint pair.
- POINT|VECTOR
- A keyword that indicates the alignment method.
- point|vector
- An entity variable referring to a Point, PointPair, Vector, or VectorPair which is based on the above keyword.
- ALLOW_COMPLIANCE
- An optional argument that indicates the joint pair can be made compliant.
Example
*BodyPair "GM Tire", p_wheel_cg)
(b_tire,
*BodyPair( "Spindle, p_spalign)
b_spindle,
*PointPair(p_wc, "Wheel center")
*PointPair(p_spalign, "Spindle align point")
*RevJointPair(j_spindle, "Spindle revolute", b_tire,
b_spindle,
p_wc,
POINT,
p_spalign,
ALLOW_COMPLIANCE)
Context
Properties
Property | Returns Data Type | Description |
---|---|---|
b1 | BodyPair | The first body pair constrained by the revolute joint pair. |
b2 | BodyPair | The second body pair constrained by the revolute joint pair. |
i | MarkerPair | The marker pair on b1. |
isbush | boolean | See Comments. |
j | MarkerPair | The marker pair on b2. |
l | RevoluteJoint | The left revolute joint. |
label | string | The descriptive label of the revolute joint pair. |
r | RevoluteJoint | The right revolute joint. |
state | boolean | Control state (TRUE or FALSE). |
varname | varname | The variable name of the revolute joint pair. |
Comments
When a point is used (instead of a vector) to define an axis, it is obtained as the direction from the origin of the joint to the specified point.
The individual joints of a *RevJointPair() can be referred to as joint_name.l (left revolute joint) and joint_name.r (right revolute joint).
The ALLOW_COMPLIANCE argument is optional. When it is included, it indicates that the joint pair can be made compliant. In compliant mode, a joint pair acts as a bushing pair.
The isbush property is valid only for joint pairs that can be made compliant. When isbush is set to FALSE, the joint pair acts like kinematic joints (in a noncompliant mode). When isbush is set to TRUE, the joint pair acts like a bushing pair (in a compliant mode).
When the compliant option in a system is switched to "non-compliant", all the joint pairs in the system act as kinematic joints. However, when the system option is switched to "compliant", only the joint pairs that are created with an ALLOW_COMPLIANCE flag act as bushing pairs. The rest of the joint pairs continue to behave as kinematic joints.