Multi-Body Approach to the Dynamic Analysis of Space Structures with Actuated Components

Abstract

The bubllc reporting burden for this collection of Information Is estimated to average 1 hour per response, including the tim^ gathering end maintaining the data needed, and completing and reviewing the collection of information. Send comments regan of irifCrmation, Including suggestions for reducing the burden, to Department of Defense, Washington Headquarters Si (0704-0188), 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302. Respondents should be aware that A. subject to any penalty for failing to comply with a collection of information If it does not display a currently valid 0MB control numoBr. PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ADDRESS. 1. REPORT DATE (DP-MM-YYYY) 2. REPORT TYPE Final Report DATES COVERED (From -To)Dec 15, 00 -Dec 14, 03 TITLE AND SUBTITLEMxUtibody Approach to the Dynamic Analusis of Structures with ActuatedComponents 5a. CONTRACT NUMBER 5b. GRANT NUMBER F49620-01-1-0038 5c. PROGRAM ELEMENT NUMBER AUTHOR(S)Dr. Oliver A. Bauchau 5d. PROJECT NUMBER 5e. TASK NUMBER 5f. WORK UNIT NUMBER PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES)Gerogia Tech Research Corporation Gerogia Institute of Technology Atlanta, GA 30332-0420 PERFORMING ORGANIZATION REPORT NUMBER SPONSORING/MONITORING AGENCY NAME{S) AND ADDRESS(ES) Department of the Air Force 4015 Wilson Blvd. Air Force Office of Scientific ResearchArlington, VA 22203-1954 High-fidelity, finite-element-based dimensionally reduced models have been constructed for composite plates and shells, including hygrothermal and piezoelectric effects, \mder the sponsorship of AFOSR. In these models, the smallness of the thickness has beea used to advantage to rigorously reduce the original three-dimensional geometrically nonlinear elasticity theory to two-dimensional Reissner-Mindlin type theory for plates and shells. The resulting theory can achieve an accuracy comparable to higher-order layerwise theories at the cost of only a first-order shear deformation theory. The dimensional reduction process and the recovery relations for the original three-dimensional displacements/strains/stresses are implemented in a finite-element code, Variational Asyinptotic Plate and Shell Analysis (VAPAS). This program is connected with DYMORE, a nonlinear finite-elemfent based multi-body dynamic code to provide an efficient and accurate simulation capability for space systems involving composite and inflatable components with actuated elements which are required for current and fiiture Air Force missions. SPONSOR/MONITOR'S ACRONYM(S) SPONSOR/MONITOR'S REPORT NUMBER(S)12 SUBJECT TERMS SECURITY CLASSIFICATION OF: a. REPORT b. ABSTRACT c. THIS PAGE LIMITATION OF ABSTRACT NUMBER OF PAGES 19a. NAME OF RESPONSIBLE PERSONDr. Oliver A. Bauchau 19b. TELEPHONE NUMBER (Include area code) 404-894-4763Standard Form 298 (Rev. 8/98)Prescribed by ANSI Std. Z39.18 IntroductionThis three-year grant was initiated in December 2000. All work done under the auspices of the grant is sxunmarized herein, and the various papers written under grant sponsorship are appended to pro...