Accession Number : ADA119349

Title :   Development of an Analytical Model for Large Space Structures.

Descriptive Note : Final rept. Oct 80-Sep 81,

Corporate Author : AEROSPACE CORP EL SEGUNDO CA VEHICLE ENGINEERING DIV

Personal Author(s) : Aswani,Mohan

PDF Url : ADA119349

Report Date : 15 Mar 1982

Pagination or Media Count : 99

Abstract : A methodology is presented for modeling large truss-type structures based on the concept of equivalent continuum. The equivalent effective elastic and dynamic properties of the continuum model in terms of the material and geometric properties of the truss are derived in a simple and straightforward manner. The accuracy of the model is demonstrated in a free vibration problem, when the results are compared to those obtained from the conventional finite element method. Both simply supported and free-free boundary conditions are considered. In addition, the assumptions made in obtaining the continuum solution are discussed. Numerical results clearly indicate the potential of this approach for modeling large repetitive truss-type structures. (Author)

Descriptors :   *Mathematical models, *Finite element analysis, *Spacecraft, *Trusses, *Structural engineering, Mechanical properties, Bending, Shear strength, Elastic properties, Continuum mechanics, Boundaries, Vibration, Platforms, Space environments, Numerical methods and procedures, Inertia, Stiffness

Subject Categories : Numerical Mathematics
      Structural Engineering and Building Technology
      Mechanics
      Unmanned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE