Working with HigherPair ConstraintsADAMS/View provides you with two types of higherpair constraints: point curve and 2D curvecurve. See table 2.6.
Table1 2.6 HigherPair Constraints in ADAMS/View
Icon
 HigherPair
Constraints
 An example
 Constrains the following

 pininslot

 The pointcurve constraint restricts a fixed point defined on one part to lie on a curve defined on a second part. The first part is free to roll and slide on the curve that is fixed to a second part. The curve on the second part can be planar or spatial, or open or closed.
A pointcurve constraint removes two translational DOF from your model.
 PointFollower


 2D
curvecurve

 A 2D curvecurve constraint restricts a curve defined on the first part to remain in contact with a second curve defined on a second part. The curvecurve constraint is useful for modeling cams where the point of contact between two parts changes during the motion of the mechanism. The curvecurve constraint removes three DOF from your model.
 To create a pointcurve constraint:
1) From the Jointpalette, select the PointCurve Constrainttool .
2) In the settings container, set whether or not you will be selecting an edge or curve:
Ÿ Curves Splines, chains, and dataelement curves are all considered curves.
Ÿ Edge An edge is one of the wireframe outlines drawn on a solid.
3) Select a point on a part that will travel along a curve.
4) Select the curve or edge along which the point will travel. The curve can be closed or open. Note that when you select a closed curve, the Dynamic Model Navigator highlights only a portion of the curve. ADAMS/View will use the entire curve.
To create a 2D CurveCurve constraint:
1) From the Jointpalette, select the 2D CurveCurve Constrainttool .
2) In the settings container, for each part, set whether or not you will be selecting an edge or curve:
Ÿ Curves Splines, chains, and dataelement curves are all considered curves.
Ÿ Edge An edge is one of the wireframe outlines drawn on a solid.
3) For a curveoncurve cam, select a curve or edge that will travel along a second curve.
4) Select the curve along which the first curve will travel. The curve can be closed or open. Note that when you select a closed curve, the Dynamic Model Navigator highlights only a portion of the curve. ADAMS/View will use the entire curve.
Date: 20151218; view: 784
