국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Development of a Benchmark Example for Delamination Fatigue Growth Prediction
저자	Krueger, Ronald
Keyword	CANTILEVER BEAMS;; COMPOSITE MATERIALS;; CYCLES;; CYCLIC LOADS;; DELAMINATING;; FINITE ELEMENT METHOD;; MATHEMATICAL MODELS
URL	http://hdl.handle.net/2060/20100027539
보고서번호	NASA/CR-2010-216723
발행년도	2010
출처	NTRS (NASA Technical Report Server)
ABSTRACT	The development of a benchmark example for cyclic delamination growth prediction is presented and demonstrated for a commercial code. The example is based on a finite element model of a Double Cantilever Beam (DCB) specimen, which is independent of the analysis software used and allows the assessment of the delamination growth prediction capabilities in commercial finite element codes. First, the benchmark result was created for the specimen. Second, starting from an initially straight front, the delamination was allowed to grow under cyclic loading in a finite element model of a commercial code. The number of cycles to delamination onset and the number of cycles during stable delamination growth for each growth increment were obtained from the analysis. In general, good agreement between the results obtained from the growth analysis and the benchmark results could be achieved by selecting the appropriate input parameters. Overall, the results are encouraging but further assessment for mixed-mode delamination is required.