How does 'mass participation' relate to the effective mass ofa particular modal shape? Are they analogous?
I've noticed that if the modal is unrestrained, the rigid bodymodes will account for almost all of the mass participation, andthe total in each direction sums to nearly 1, but when the model isrestrained the sums become much less. I figure this is because theentire body moves when unrestrained, and so this will account for alarge percentage of mass participation, and therefore make othermodes seem negligible. Am I right to assume that if I were tocompute many more modal shapes (100s, say) for the restrained modelthat the sum of the mass participation in each direction wouldindeed add up to 1 (or close to it)?SolidworksSimulation
I've noticed that if the modal is unrestrained, the rigid bodymodes will account for almost all of the mass participation, andthe total in each direction sums to nearly 1, but when the model isrestrained the sums become much less. I figure this is because theentire body moves when unrestrained, and so this will account for alarge percentage of mass participation, and therefore make othermodes seem negligible. Am I right to assume that if I were tocompute many more modal shapes (100s, say) for the restrained modelthat the sum of the mass participation in each direction wouldindeed add up to 1 (or close to it)?SolidworksSimulation
