The Effects of Hydrostatic Pressure on Acoustic Radiation of Ring-Stiffened Cylindrical Shells Xie Guanmo (Lect.,Dept. of Engineering Mechanics,WUT,Wuhan 430070,China.)The acoustic radiation of ring-stiffened cylindrical shells in fluid are sludied in this paper by means of Hamilton's principle and Green function, the effects of hydrostatic pressure on the acoustic radiationof shells are discussed.:ring-stiffened cylindrical shell; acoustic radiation; hydrostatic pressure; Hamilton's principle; Green function