Nonlinear dynamic fluidstructure interaction calculations with coupled finite element and finite volume programs
Abstract
Two and threedimensional fluidstructure interaction computer programs for the simulation of nonlinear dynamics were developed and applied to a number of problems. The programs were created by coupling Arbitrary LagrangianEulerian finite volume fluid dynamics programs with strictly Lagrangian finite element structural dynamics programs. The resulting coupled programs can use either fully explicit or implicit time integration. The implicit time integration is accomplished by iterations of the fluid dynamics pressure solver and the structural dynamics system solver. The coupled programs have been used to solve problems involving incompressible fluids, membrane and shell elements, compressible multiphase flows, explosions in both air and water, and large displacements. In this paper, we present the approach used for the coupling and describe test problems that verify the twodimensional programs against an experiment and an analytical linear problem. The experiment involves an explosion underwater near an instrumented thin steel plate. The analytical linear problem is the vibration of an infinite cylinder surrounded by an incompressible fluid to a given radius.
 Publication:

Presented at the American Society of Mechanical Engineers' Winter Annual Meeting
 Pub Date:
 July 1994
 Bibcode:
 1994asme.meet....9L
 Keywords:

 Computer Programs;
 Dynamic Response;
 Dynamic Structural Analysis;
 Finite Element Method;
 Fluid Dynamics;
 Incompressible Fluids;
 Lagrangian Function;
 Nonlinearity;
 Iteration;
 Membrane Structures;
 Metal Plates;
 Multiphase Flow;
 Thin Plates;
 Thin Walled Shells;
 Vibration;
 Fluid Mechanics and Heat Transfer