tailieunhanh - The Behavior of Structures Composed of Composite Materials Part 5

Tham khảo tài liệu 'the behavior of structures composed of composite materials part 5', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 109 Quasi-Isotropic Composite Panels Subjected to a Uniform Lateral Load When a composite laminate has a stacking sequence in which 11 - iXn it is referred to as quasi-isotropic. In that case it behaves as an isotropic plate in the determination of lateral deformations w x y and stress couples Mỵ Mand A l . For isotropic plate monocoque plates several textbooks such as Timoshenko and Woinowsky-Krieger 4 and Vinson 7 have provided expressions for the maximum deflection and the maximum stress couple M a plate attains when subjected to a constant laterally distributed load . such as _C0p0a4 wmax 3-71 EhJ max where a is the smaller plate dimension b is the longer plate dimension li ơ E is the modulus of elasticity of the plate h is the plate thickness and - . The dimensionless constants C l and C are given in tabular form for various boundary conditions and these are repeated herein for completeness in Tables through . Table also provides information for the case wherein the plate is subjected to a hydraulic head. These tables and procedures are well known and well used. TABLE . Coefficients for determining Maximum Deflections and Maximum Stresses for a Rectangular Plate with b a. Simply Supported at the Edges under Uniform Pressure Loading Pg with Sufficient Corner Forces to Hold it Down on the Foundation v . bl a 1 2 3 4 5 00 c0 Cl TABLE . Coefficients for determining Maximum Deflections and Maximum Sưesses for a Rectangular Plate under Uniform Load pg with the a Edges Clamped and b Edges Simply Supported v . bl a 00 3 2 1 Co 110 TABLE . Coefficients for Determining Maximum Deflections and Maximum Stresses for a Rectangular Plate under Uniform Loading Pg .