국내 최대 기계 및 로봇 연구정보

공학설계D/B

공학설계D/B 게시판 내용
Volume Title	Structures
Volume No	Laminated composites - failure criteria - failure modes and analysis, criteria, edge delamination (also at layer drop-offs).
DATA Title	Failure analysis of fibre reinforced composite laminates.
DATA Item	84018
KEYWORD	composite, direct, failure, fibre, in, laminated, loading, moment, orthotropic, plate, program, reinforced, thermal, unbalanced, fiber
ISBN	0 85679 480 5
ABSTRACT	ESDU 84018 introduces a Fortran program (ESDUpac A1043) for failure analysis of the laminate subjected to consecutive systems of combined in-plane, moment and thermal loading. Initially unrestrained balanced or unbalanced laminates can be treated, as can the effect of holding the unloaded laminate flat. The failure assessment is based on a linear elastic layer-by-layer analysis in which the stresses in each layer in turn are compared to the Puck Modified Criterion (see also ESDU 83014) which differentiates between fibre and matrix failures. If matrix failure occurs, the transverse direct and shear stiffnesses of that layer are put to zero but the fibre stiffness properties are retained. The development of such layer failures is traced under the gradual application of the loading system to provide a damage history. Laminate failure is assumed either when total matrix failure occurs or when fibre failure in one layer occurs. If failure does not occur, the program provides an assessment of the load level that would cause failure. The program is provided on disc in the software volume both uncompiled and compiled in ESDUview, a user-friendly shell that prompts on-screen for input data and provides context-sensitive help.