Accession Number : ADA254735


Title :   Fluid-Structure Interaction Using Retarded Potential and ABAQUS


Descriptive Note : Interim rept.


Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC


Personal Author(s) : Dyka, C T ; Tamm, M A


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a254735.pdf


Report Date : 19 Aug 1992


Pagination or Media Count : 17


Abstract : The transient analysis of coupled fluid-structure systems is a very challenging and important area of particular concern to the naval community. However, the general state of affairs in this class of problems is far from fully satisfactory. In this paper, a brief discussion concerning first transient structural analysis and then fluid-structure interaction is undertaken. Following this, the nonlinear finite element method (FEM) program ABAQUS is used to model the structure, while the fluid realm is discretized with boundary elements (BEM) employing the retarded potential (RP) formulation. The RP method has not been extensively applied in the past to such classes of problems due primarily to storage requirements. However, the RP approach does offer important advantages over both the use of FEM for the fluid or the-widely used Doubly Asymptotic Approximation (DAA). which is also a boundary element method. Discussion concerning time stepping (including automatic considerations), modeling and applications, accuracy, storage, stability, and the overall efficiency of this coupled technique in a MICRO-VAX environment is included. We conclude that the RP method is quite viable for the fluid and that the coupling to ABAQUS to form ABAQUS-RP is a very promising tool for transient.


Descriptors :   *COMPUTER PROGRAMS , *INTERACTIONS , *SHOCK WAVES , *FLUID DYNAMICS , *STRUCTURAL ANALYSIS , COMPUTERIZED SIMULATION , REQUIREMENTS , TRANSIENTS , FORMULATIONS , ACCURACY , APPROACH , COUPLINGS , AUTOMATIC , STORAGE , FLUIDS , BOUNDARIES , TIME , EFFICIENCY , STRUCTURES , TOOLS , FINITE ELEMENT ANALYSIS , STABILITY , ENVIRONMENTS , COMMUNITIES , MODELS


Subject Categories : Computer Programming and Software
      Fluid Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE