Abstract
Aiming to estimate sound radiation power and to optimize vibrating structure, this paper proposes the virtual exciting force. The virtual exciting force can generate the vibration accelerations measured at several reference points and will be used instead of unknown actual exciting force. By using natural frequencies and eigenfunctions at virtual exciting points and reference points, frequency spectra of the virtual exciting forces can be formulated. The proposed method is applied to one side clamped rectangular plate. Numerical simulations validate that virtual exciting force is effective and useful to estimate vibration accelerations.
