6 for a 3-D structure ???

johnnymanson

Inertia Relief -

Linear Static Structural Analyses Only Calculates accelerations to counterbalance the applied loads.

Displacement constraints on the structure should only be those necessary to prevent rigid-body motions (6 for a 3-D structure).

The sum of the reaction forces at the constraint points will be zero.

Accelerations are calculated from the element mass matrices and the applied forces. Data needed to calculate the mass (such as density) must be input.

Both translational and rotational accelerations may be calculated.

This option applies only to the linear static structural analyses. Displacements and stresses are calculated as usual

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6 for a 3-D structure

这句话是什么意思??

拉布索思

对三维结构来说有6个（刚体）自由度。