Accession Number:

ADA175002

Title:

Nonlinear Analysis and Optimal Design of Dynamic Mechanical Systems for Spacecraft Application.

Descriptive Note:

Annual technical rept. 1 Feb 85-31 Jan 86,

Corporate Author:

CLARKSON UNIV POTSDAM NY DEPT OF MECHANICAL AND INDUSTRIAL ENGINEERING

Personal Author(s):

Report Date:

1986-02-01

Pagination or Media Count:

37.0

Abstract:

A nonlinear finite element analysis procedure already developed for planar mechanisms is being modified to handle complex mechanisms with sliding masses and mechanisms operating at relatively high speeds. Progress is also being made in developing a suitable nonlinear finite element analysis procedure for three-dimensional mechanisms. In both cases the analysis takes into account the effects of geometric and material nonlinearities, vibrational effects and coupling of deformations. In the optimal design area, a new algorithm has been developed for finding the minimum of a sum-of-squares objective function subject to general nonlinear constraints. The solution of preliminary examples indicate good results in terms of the total number of objective function evaluations to obtain an optimal design. Complete details of these investigations are included in the Appendix. To meet the extraordinary computational needs of this project, a separate research VAX 11785 Computer and peripheral equipment were made available through a DoD research grant. The National Science Foundation also provided funds for some additional equipment as well as computational time on a supercomputer.

Subject Categories:

  • Mechanics
  • Unmanned Spacecraft

Distribution Statement:

APPROVED FOR PUBLIC RELEASE