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By Beretta R.

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Extra info for Mathematica Mechanical Systems

Example text

Line@ground, 80, 4, 0<, 80, 9, 0

For example, the Translate2 constraint in the crankshaft-piston model would use four local point numbers instead of the four explicit 2D coordinates in the Line objects. Here is a constraint with, and without, local point numbers. In[11]:= Translate2@3, Line@ground, Line@piston, Translate2@3, Line@ground, Line@piston, 2, 3D, 1, 2DD; 80, 4<, 80, 9

2. Some constraint functions require a scalar expression to specify an angle or distance. Format for all constraint functions. Further, all constraint function names end with a single digit, except the general constraint function Con straint. This digit signifies the number of degrees of freedom constrained by the constraint. For example, the 2 in the Translate2 constraint function name signifies that it contains two constraint equations and constrains two degrees of freedom in a model. 2 2D Basic Constraints The Modeler2D basic constraints specify elementary geometric relationships between points and lines on mechanism bodies.

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