FEM/BEM analysis of diesel piston-slap induced ship hull vibration and underwater noise

摘要

Numerical prediction of vibration transmission from a ship diesel via a resilient mounting system to a stiffened cylindrical hull is performed aiming to provide a clearer insight into the significance of piston-slap in the diesel excitations to the hull vibration, and consequently, the underwater radiated noise. Finite element method (FEM) is employed to simulate the vibra- tion response of the hull due to the excitations of diesel piston-slap and vertical inertia force of reciprocating masses.