국내 최대 기계 및 로봇 연구정보

공학설계D/B

공학설계D/B 게시판 내용
Volume Title	Structures
Volume No	Laminated composites - stress analysis, stiffnesses, lay-ups for special orthotropy, circular hole stress raiser, through thickness shear stiffness, laminate design.
DATA Title	Stress analysis of laminated flat plates.
DATA Item	94004
KEYWORD	composite, fibre, flat, laminated, layer, orthotropic, plate, ply, reinforced, stress, temperature, fiber
ISBN	0 85679 891 6
ABSTRACT	ESDU 94004 gives equations for the strains and stresses, and curvatures where appropriate, in laminated flat plates as a result of either loading actions or the differential contractions and expansions that occur due to temperature changes in the usual working environment or temperature change from the curing temperature to the working temperature, or a combination of both effects. The plates may be built-up from orthotropic layers having different material elastic and thermal properties, thicknesses, and orientations of their principal axes of orthotropy. The equations apply to balanced laminates, when no curvature will be induced by the thermal effects. They also apply to unbalanced laminates in which case equations give the stresses induced by thermal effects when the plate is held flat, either with or without an in-plane loading. Worked examples for the stresses in a balanced plate due to external loading and built-in stresses in the faceplate of a sandwich panel illustrate the use of the equations.