국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Efficient Design and Analysis of Lightweight Reinforced Core Sandwich and PRSEUS Structures
저자	Bednarcyk, Brett A.;; Yarrington, Phillip W.;; Lucking, Ryan C.;; Collier, Craig S.;; Ainsworth, James J.
Keyword	COMPOSITE MATERIALS;; CONNECTORS;; DESIGN ANALYSIS;; FOAMS;; HONEYCOMB STRUCTURES;; PANELS;; RODS;; SANDWICH STRUCTURES;; STIFFNESS
URL	http://hdl.handle.net/2060/20120000909
보고서번호	NASA/TM-2011-217198
발행년도	2012
출처	NTRS (NASA Technical Report Server)
ABSTRACT	Design, analysis, and sizing methods for two novel structural panel concepts have been developed and incorporated into the HyperSizer Structural Sizing Software. Reinforced Core Sandwich (RCS) panels consist of a foam core with reinforcing composite webs connecting composite facesheets. Boeing s Pultruded Rod Stitched Efficient Unitized Structure (PRSEUS) panels use a pultruded unidirectional composite rod to provide axial stiffness along with integrated transverse frames and stitching. Both of these structural concepts are ovencured and have shown great promise applications in lightweight structures, but have suffered from the lack of efficient sizing capabilities similar to those that exist for honeycomb sandwich, foam sandwich, hat stiffened, and other, more traditional concepts. Now, with accurate design methods for RCS and PRSEUS panels available in HyperSizer, these concepts can be traded and used in designs as is done with the more traditional structural concepts. The methods developed to enable sizing of RCS and PRSEUS are outlined, as are results showing the validity and utility of the methods. Applications include several large NASA heavy lift launch vehicle structures.