Accession Number:

ADA616853

Title:

Finite Element Modeling of Coupled Flexible Multibody Dynamics and Liquid Sloshing

Descriptive Note:

Conference paper

Corporate Author:

ADVANCED SCIENCE AND AUTOMATION CORP INDIANAPOLIS IN

Personal Author(s):

• Wasfy, Tamer M.

Report Date:

2006-09-01

Pagination or Media Count:

11.0

Abstract:

A time-accurate finite element model for simulating the fully-coupled dynamic response of flexible multibody systems and liquid sloshing in tanks is presented. The semi-discrete combined solid and fluid equations of motions are integrated using a time-accurate parallel explicit solver. The FE model consists of hexahedral, beam, and truss solid elements rigid bodies joints actuators hexahedral incompressible fluid elements and quadrilateral fluid-solid interface elements. The fluid mesh is modeled using a very light and compliant solid mesh which allows the fluid mesh to movedeform along with the tank using the Arbitrary Lagrangian-Eulerian formulation. The fluids free-surface is modeled using an acceptor-donor volume-of-fluid based algorithm. The motion of the solid and fluid is referred to a global inertial Cartesian reference frame. A total Lagrangian deformation description is used for the solid elements. The penalty technique is used to model the joints. Numerical simulations are presented for a half-filled tank supported by linear springs mounted on a test fixture.

Descriptors:

• *LIQUIDS
• *SLOSHING
• DYNAMIC RESPONSE
• EQUATIONS OF MOTION
• FINITE ELEMENT ANALYSIS
• FLUID FLOW
• INCOMPRESSIBLE FLOW
• INTERFACES
• SOLID BODIES
• TANKS(CONTAINERS)

Subject Categories:

• Numerical Mathematics
• Fluid Mechanics
• Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE