Constraints
2D/3D

• Constraints[cnum] returns the list of constraint expressions that were generated by constraint cnum.
• Constraints[{cnum1, cnum2, ... , cnumn}] returns a list of all of the expressions in all of the specified constraints, cnumi.
• Constraints[{cnum, {enum1, ... }}] returns the specified subset of the equations, enumi, in constraint cnum.
• Constraints[{{cnum1, {enum, ... }}, {cnum2}, {cnum3, {enum, ... }}}] returns several parts to several different constraints.
• Constraints[All] returns the entire constraint vector.
• Constraints[Euler] returns the Euler generalized constraints, if any exist.

• The expressions returned are numerically equal to zero when the constraints are satisfied.
• See also: AccelerationTerms, Generalized, Loads, VelocityTerms.

Further Examples

Load the Modeler2D package and define a simple model.

In[1]:=

Here are the constraint expressions associated with the Translate2 constraint.

In[2]:=

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Here are the constraint expressions associated with multiple constraints.

In[3]:=

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This shows that the velocity expression is zeroed by a solution to the model.

In[4]:=

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See HelpModel2D.