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The Concept of "Ghost Structure"

(1) Define two Named Property Sets of type Frame (or Shell) Modifiers using "Define > Name Property Sets" menu command. Let’s call the first set "Ghost" and the second set "Full". In named property set "Ghost", set all stiffness modifiers to a small value, say 1.0e-4, and the mass and weight modifiers to zero. In named property set "Full", set all modifiers to 1.0.

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