Matrix Names

 

                 Stiffness matrix perturbation

                    Applied force vector

           G           Transformation matrix

           K           Stiffness matrix

           M          Mass matrix

           P           Projector matrix

          RF          Residual Force Matrix

           U           Displacement matrix

           F          Mode shape matrix

                   Mode shapes orthogonalize w.r.t. mass matrix

           fi           The ith column of F

           Y           The matrix of unit translations and rotations

           yi          The ith column of Y