*TransJointPair()
Creates a translational joint pair.
Syntax
*TransJointPair(joint_name, "joint_label",
body_1,
body_2,
origin,
point|vector,
POINT|VECTOR,
[ALLOW_COMPLIANCE])
Arguments
- joint_name
- The variable name of the translational joint pair.
- joint_label
- The descriptive label of the translational joint pair.
- body_1
- The first body or body pair constrained by the translational joint pair.
- body_2
- The second body or body pair constrained by the translational joint pair.
- origin
- The location(s) of the translational joint pair for body_1.
- 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(b_jack, "Jack", p_jack_cm)
*BodyPair(b_ground, "Ground", p_ground_cm)
*PointPair(p_tire_patch, "Tire patch")
*VectorPair(v_X, "Global X")
*TransJointPair(j_jack_trans, "Jack Trans",
b_jack,
b_ground,
p_tire_patch,
VECTOR,
v_X,
ALLOW_COMPLIANCE)
Context
Properties
Property | Returns Data Type | Description |
---|---|---|
b1 | BodyPair | The first body pair constrained by the translational joint pair. |
b2 | BodyPair | The second body pair constrained by the translational joint pair. |
i | MarkerPair | The marker pair on b1. |
isbush | boolean | See Comments. |
j | MarkerPair | The marker pair on b2. |
l | TransJoint | The left translational joint. |
label | string | The descriptive label of the translational joint pair. |
r | TransJoint | The right translational joint. |
state | boolean | Control state (TRUE or FALSE). |
varname | string | The variable name of the translational 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 *TransJointPair() can be referred to as joint_name.l (left translational joint) and joint_name.r (right translational joint).
The ALLOW_COMPLIANCE argument is optional. When it is included, it indicates that the joint pair can be made compliant. In compliant mode, such 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.