5. Summary of results

For both models, the stress responses obtained after projection are identical to the reference constraints obtained by direct calculation with Code_Aster and provided as data.

For modeling A, the displacement and deformation responses are in perfect harmony with the reference solutions. The values of the speeds and accelerations obtained after projection are close to those obtained by direct calculation. The slight differences observed are due to approximation errors caused by the determination of velocities and accelerations by a linear time pattern.

Cases where the number of modes is not equal to the number of measurements are not tested (generalized inverse problem); in particular, the Tikhonov regularization method is not tested.