One computed mode of a finished Modal stage. shape is node-major over every node in the
input's node-table order (shape[node * ndf + dof], fixed DOFs 0.0), M-normalized and
sign-fixed so its largest-magnitude entry is positive. participation[d] is the modal
participation factor phi^T M r_d for global translation direction d, and mass_ratio[d]
the effective modal mass participation^2 as a fraction of ModalStageResult::total_mass[d].
One computed mode of a finished
Modalstage.shapeis node-major over every node in the input's node-table order (shape[node * ndf + dof], fixed DOFs0.0), M-normalized and sign-fixed so its largest-magnitude entry is positive.participation[d]is the modal participation factorphi^T M r_dfor global translation directiond, andmass_ratio[d]the effective modal massparticipation^2as a fraction ofModalStageResult::total_mass[d].