Vibroacoustic behavior of a partially immersed cylindrical shell under point-force excitation: Analysis and experiment

Vibration behaviors of cylindrical shell with bolted joint effects: An experimental study

“…Antunes et al 12 used experimental modal analysis to obtain the frequency response functions to identify natural frequencies, modal damping ratios, and mode shapes of a variable stiffness composite laminated plate. Zhao et al 13 measured and calculated the spectra for both vibration and sound in shell structure in continuous immersion undergoing point-force excitation. Li et al 14 obtained the natural frequency and nonlinear response of a points-supported cylindrical shell.…”

Forced vibroacoustic response of a cylindrical shell in an underwater acoustic waveguide

“…Infinite cylindrical shells under lineforce distributed loads can be used for efficient and approximate investigations by employing longitudinal symmetry. To date, vibroacoustic studies of infinite cylindrical shells in literature have been analytically and numerically carried for an infinite fluid domain (Junger and Feit, 1986;Pathak and Stepanishen, 1994;Guo, 1996;Liu et al, 2010;Kerferd et al, 2020;Maxit et al, 2020a,b;Williams et al, 2022), semiinfinite fluid domain (Salaün, 1991;Ergin and Temarel, 2002;Li et al, 2003;Azarpeyvand, 2003, 2004;Ye et al, 2012;Li et al, 2014;Guo et al, 2017;Zhao et al, 2020;Marsick et al, 2021) and in a fluid with complex acoustic boundaries such as two surface meeting in a corner to create a quarter-infinite fluid domain (Chen et al, 2016;Guo et al, 2018). However, there is no analytical model for vibroacoustic analysis of an immersed cylindrical shell in water bounded by an upper free surface and lower rigid surface (i.e., shallow water).…”

“…The study notices that the far field pressure is significantly affected by the differing immersion status, while the input power flow is much less affected. Recently, Zhao et al (2020) has presented theoretical investigations of a partially submerged shell of finite length, using a discretization approach of the wet surface to solve the vibroacoustic coupling of the shell and fluid domain. The vibration and acoustic results were related against immersion configurations from a completely wet shell to a completely dry shell using a frequency-depth spectra.…”