MODELLING FLUID-STRUCTURE IMPACT WITH THE COUPLED FE-SPH APPROACH

摘要

Structural response to water impact is important for both the aerospace and marine industries. The goal is a reliable technique for predicting the structural response to extreme water loading. This is a complex problem involving the interaction of non-linear fluid behaviour (breaking waves, fluid impact) with non-linear structural behaviour (large deformations, contact, material plasticity and damage). The difficulty of modelling this type of fluid-structure interaction is in correctly representing the fluid interaction with the structure so that the loading of the structure is correct. This paper will discuss the coupled FE/SPH approach for modelling the response structures to impact with water such as extreme wave loading. Previous work at Cranfield has demonstrated the FE-SPH approach for impact of aircraft structures on water. This work has extended this to wave loading of floating structures, which requires significantly more complex initial conditions for the water component.