Structural Dynamics

Structural Dynamics

Why does specifying the default ratio=1.0 affect the new SYNCHRO results in ANSYS 11.0? It results in a general rotational force analysis being done instead of an unbalanced force.

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      The SYNCHRO command is unlike most ANSYS commands in that specifying the default is not the same as leaving the field blank. When any numerical value is specified for ratio: [SYNCHRO,RATIO] it is assumed that the specified force is to be applied as a normal rotational force and not an unbalance (F=omega^2 * Unb) [Ref: SYNCHRO command notes]