In this section
@article{Simillides:2024:10.1016/j.compstruc.2024.107369,
author = {Simillides, Y and Huthwaite, P and Kalkowski, MK and Lowe, MJS},
doi = {10.1016/j.compstruc.2024.107369},
journal = {Computers and Structures},
title = {A displacement-based finite element formulation for solving elastic wave problems in coupled fluid-solid media on a GPU},
url = {http://dx.doi.org/10.1016/j.compstruc.2024.107369},
volume = {299},
year = {2024}
}
TY - JOUR
AB - Ultrasonic wave propagation and scattering involving both solids and fluids underpins many key configurations in non-destructive testing and underwater acoustics. The resulting interactions are highly dependent on both material parameters and geometries and are difficult and expensive to investigate experimentally. Modelling capabilities are often used to overcome this, but these are also complex and computationally expensive due to the complexity of the fluid-solid interactions. We introduce a novel explicit time-domain finite element method for simulating ultrasonic waves interacting with fluid-solid interfaces. The method is displacement-based, and relies on classical hourglassing control, in addition to a modified time-stepping scheme to damping out shear motion in an inviscid fluid. One of the key benefits of the displacement-based approach is that nodes in the fluid have the same number of degrees of freedom as those in the solid. Therefore defining a fluid-solid model is as easy as defining an all-fluid or all-solid model, avoiding the need for any special treatments at the interfaces. It is thus compatible with typical elastodynamic finite element formulations and ready for implementation on a graphical processing unit. We verified the method across a range of problems involving millions of degrees of freedom in fields such as non-destructive testing and underwater acoustics.
AU - Simillides,Y
AU - Huthwaite,P
AU - Kalkowski,MK
AU - Lowe,MJS
DO - 10.1016/j.compstruc.2024.107369
PY - 2024///
SN - 0045-7949
TI - A displacement-based finite element formulation for solving elastic wave problems in coupled fluid-solid media on a GPU
T2 - Computers and Structures
UR - http://dx.doi.org/10.1016/j.compstruc.2024.107369
UR - http://hdl.handle.net/10044/1/111187
VL - 299
ER -