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A numerically efficient finite element hydroelastic analysis
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Coppolino, R. N. |
| Copyright Year | 1976 |
| Description | A finite element hydroelastic analysis formulation is developed on the basis of Toupin's complementary variational principle. Emphasis is placed on the special case of an incompressible fluid model which is applicable to propellant tank hydroelastic analysis. A concise fluid inertia representation results from the assumption of incompressibility and the hydroelastic equations reduce to a simplified form associated with the structure alone. The efficiency of the incompressible hydroelastic formulation in unhanced for both fluid and structure by introduction of harmonic reduction as an alternative to Guyan reduction. The theoretical developments are implemented in the NASTRAN Program and the technique is verified and demonstrated as an efficient and accurate approach with a series of illustrative problems including the 1/8 scale space shuttle external tank. |
| File Size | 1362028 |
| Page Count | 30 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19770013552 |
| Archival Resource Key | ark:/13960/t9m37m99c |
| Language | English |
| Publisher Date | 1976-10-01 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Finite Element Method External Tanks Green's Functions Hydroelasticity Space Shuttles Nastran Digital Data Incompressible Fluids Structural Analysis Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
