Continuum modeling of the mechanical and thermal behavior of discrete large structuresIn the present paper we introduce a rather straightforward construction procedure in order to derive continuum equivalence of discrete truss-like repetitive structures. Once the actual structure is specified, the construction procedure can be outlined by the following three steps: (a) all sets of parallel members are identified, (b) unidirectional 'effective continuum' properties are derived for each of these sets and (c) orthogonal transformations are finally used to determine the contribution of each set to the 'overall effective continuum' properties of the structure. Here the properties includes mechanical (stiffnesses), thermal (coefficients of thermal expansions) and material densities. Once expanded descriptions of the steps (b) and (c) are done, the construction procedure will be applied to a wide variety of discrete structures and the results will be compared with those of other existing methods.
Document ID
19800050832
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Nayfeh, A. H. (Cincinnati Univ. OH, United States)
Hefzy, M. S. (Cincinnati, University Cincinnati, Ohio, United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1980
Subject Category
Structural Mechanics
Report/Patent Number
AIAA PAPER 80-0679
Meeting Information
Meeting: Structures, Structural Dynamics, and Materials Conference