Abstract:Aiming at the problems of equivalent charge test lacking definite specification and standard in anti-explosion test of underwater weaponry, based on common empirical formula, in this paper the shock overpressure equivalent method and shock factor equivalent method are compared by analytical calculation and instances. For the shock factor equivalent method, the factors such as the mass of charge, the collapse distance, and the relative position and attitude between explosion and target are considered. On the basis of the rationality of equivalent test conclusion and the degree of closing to reality, taking actual test for example, this paper analyzes implementation of equivalent test, and proposes selecting 15 ~ 20 kg equivalent weight for charge mass of explosion source in equivalent test.