Reduction of stiffness and mass matrices

Robert J. Guyan (1)

1 North American Aviation Inc

Just as it is often necessary to reduce the size of the stiff­ness matrix in statical structural analysis, the simulta­neous reduction of the nondiagonal mass matrix for natural mode analysis may also be required. The basis for one such reduction technique may follow the procedure used in Ref. 1 for the stiffness matrix, namely, the elimination of coordinates at which no forces are applied.

Domaines: Mécanique des structures [physics.class-ph]; Mécanique [physics.med-ph]; Sciences de l'ingénieur [physics]

Robert J. Guyan. Reduction of stiffness and mass matrices. AIAA Journal, 1965, 3 (2), pp.380. ⟨10.2514/3.2874⟩. ⟨hal-01711552⟩