Coherent Masses And Inertia; Continuity Of Laws - Autodesk 466B1-05A761-1304 - AutoCAD Inventor Simulation Suite 2010 Getting Started Manual

Coherent Masses and Inertia

Ensure that the mechanism is well-conditioned. For example, the mass and
inertia of the mechanism should be in the same order of magnitude. The most
common error is a bad definition of density or volume of the CAD parts.

Continuity of Laws

Numerical computing is sensitive toward incontinuities in imposed laws. Thus,
while a velocity law defines a series of linear ramps, the acceleration is
necessarily discontinuous. Similarly, when using contact joints, it is better to
avoid profiles or outlines with straight edges.
NOTE Using little fillets eases the computation by breaking the edge.
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