A dual mode equation based deterministic acoustic-structure coupling response prediction method, comprising the following steps: (1) dividing a structure and a vocal tract in an acoustic-structure coupling system into different sub-systems; (2) calculating a mode of a structure sub-system and a vocal tract sub-system; (3) calculating a coupling parameter between modes in adjacent sub-systems; (4) establishing a dual mode equation of the coupling system; (5) through pre-processing, obtaining a generalised force load accepted on the sub-system mode under the action of a deterministic load; (6) calculating a dual mode equation, and obtaining a participation factor of all the modes; and (7) through modal superposition, calculating a deterministic acoustic-structure coupling response of the system. The deterministic acoustic-structure coupling response prediction method is a dual mode equation based deterministic acoustic-structure coupling response prediction method; in the method, a system is divided into continuously coupled sub-systems, and deterministic vibration of the system is described using sub-system modes in a limited frequency band. The analysis efficiency of the method is higher than a traditional finite element method.
DUAL MODE EQUATION BASED DETERMINISTIC ACOUSTIC-STRUCTURE COUPLING RESPONSE PREDICTION METHOD