Accession Number:

ADA275022

Title:

Nonlinear Dynamics of Deployable and Maneuverable Space Structures

Descriptive Note:

Final rept. Apr 1990-Sep 1993

Corporate Author:

CORNELL UNIV ITHACA NY

Personal Author(s):

Report Date:

1993-12-10

Pagination or Media Count:

21.0

Abstract:

The research goals of this URI efforts are 1 to study the effects of nonlinearities on the dynamics of deployable and maneuverable structures, including the possibility of chaotic or transient dynamics, 2 to design experiments to study slewing transients of flexible structures both to test the analytical models and to explore for possible unmodelled dynamic effects, 3 to study the motion of unfolding of deployable structures, and 4 to advance computational capability for the simulation of dynamic controlled deployment and maneuver of large flexible structures. The accomplishments include 1 developed a soliton deployment strategy for folded panel space structures, 2 showed spatially complex and chaotic solutions of a twisted elastica, 3 established evidence for transition from soliton to chaotic transient dynamics, 4 developed a robust cable controlled flexible robot arm structure, 5 completed the structural modelling, attribute assignment and visualization capabilities of an interactive graphic 3-D system for dynamic and static structural analysis, and 6 completed work on coarse-grained parallel processing for nonlinear structural dynamics by developing new explicit and implicit analysis and automatic domain partitioning algorithm for load balancing among processors. Nonlinear structural dynamics, Space structures, Structural computational mechanics, Structural modeling

Subject Categories:

  • Structural Engineering and Building Technology
  • Manned Spacecraft

Distribution Statement:

APPROVED FOR PUBLIC RELEASE