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기술보고서

기술보고서 게시판 내용
타이틀	A Model for Simulating the Response of Aluminum Honeycomb Structure to Transverse Loading
저자	Ratcliffe, James G.;; Czabaj, Michael W.;; Jackson, Wade C.
Keyword	ALUMINUM;; DEGRADATION;; FINITE ELEMENT METHOD;; HONEYCOMB STRUCTURES;; INDENTATION;; SIMULATION;; STATIC TESTS;; THICKNESS;; UNLOADING
URL	http://hdl.handle.net/2060/20120015487
보고서번호	NF1676L-14134
발행년도	2012
출처	NTRS (NASA Technical Report Server)
ABSTRACT	A 1-dimensional material model was developed for simulating the transverse (thickness-direction) loading and unloading response of aluminum honeycomb structure. The model was implemented as a user-defined material subroutine (UMAT) in the commercial finite element analysis code, ABAQUS(Registered TradeMark)/Standard. The UMAT has been applied to analyses for simulating quasi-static indentation tests on aluminum honeycomb-based sandwich plates. Comparison of analysis results with data from these experiments shows overall good agreement. Specifically, analyses of quasi-static indentation tests yielded accurate global specimen responses. Predicted residual indentation was also in reasonable agreement with measured values. Overall, this simple model does not involve a significant computational burden, which makes it more tractable to simulate other damage mechanisms in the same analysis.