국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Cubic Zig-Zag Enrichment of the Classical Kirchhoff Kinematics for Laminated and Sandwich Plates
저자	Nemeth, Michael P.
Keyword	ASYMMETRY;; CUBIC EQUATIONS;; DEFORMATION;; DISPLACEMENT;; FUNCTIONS (MATHEMATICS); HETEROGENEITY;; KINEMATICS;; KIRCHHOFF LAW;; LAMINATES;; MECHANICAL PROPERTIES;; PLATE THEORY;; PLATES (STRUCTURAL MEMBERS); SANDWICH STRUCTURES;; SHEAR STRESS
URL	http://hdl.handle.net/2060/20120008774
보고서번호	NASA/TM-2012-217570
발행년도	2012
출처	NTRS (NASA Technical Report Server)
ABSTRACT	A detailed anaylsis and examples are presented that show how to enrich the kinematics of classical Kirchhoff plate theory by appending them with a set of continuous piecewise-cubic functions. This analysis is used to obtain functions that contain the effects of laminate heterogeneity and asymmetry on the variations of the inplane displacements and transverse shearing stresses, for use with a {3, 0} plate theory in which these distributions are specified apriori. The functions used for the enrichment are based on the improved zig-zag plate theory presented recently by Tessler, Di Scuva, and Gherlone. With the approach presented herein, the inplane displacements are represented by a set of continuous piecewise-cubic functions, and the transverse shearing stresses and strains are represented by a set of piecewise-quadratic functions that are discontinuous at the ply interfaces.