The crack tip fields of orthotropic composite plate under bending

杨维阳,; 张少琴,; Yang, Weiyang; Zhang, Shao-Qin

doi:10.1007/bf02481901

Cited by 4 publications

(3 citation statements)

References 5 publications

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“…[3] carried out the tear test of envelope with different initial notched crack width and the finite element simulation to obtain the stress intensity factor of the crack tip. Using Yumaohong unified strength theory, the unified analytical solution of the metal crack tip plastic zone with the mode Ⅰtearing was done under the small scale yielding condition [4]. but the expansion process was not revealed and the crack tip deformation was not be directly measured and validated comparing with test method.…”

Section: Introductionmentioning

confidence: 99%

The Research on Oblique Crack Tip Deformation Field of Airship Envelope Composites Based on the Digital Speckle Correlation Method

Liu

Cao

et al. 2013

AMM

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The tearing mechanical properties and the deformation field distribution of 45 degree oblique direction of the crack tip was studied on the stratospheric airship envelope reinforced by plain woven Kevlar-fiber composite. Here, the material samples were prefabricated with the initial length of 20mm unilateral incision, and the digital speckle correlation experimental method was used to obtain the perpendicular crack tip displacement and strain fields with artificial spots under mono-axial tear test. The results show the deformation field changes with the characteristic of discrete step and the strain concentration phenomenon, and the strain concentration zone expands as increasing tensile load. The warp and weft step maximum displacement reaches 6.00mm and 1.7mm, and deformation in every step exhibits a diminishing step law, the warp deformation in the rear area of the crack tip are evenly, while the shear and weft strain volatile in a wide range

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Section: Introductionmentioning

confidence: 99%

The Research on Oblique Crack Tip Deformation Field of Airship Envelope Composites Based on the Digital Speckle Correlation Method

Liu

Cao

et al. 2013

AMM

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“…It is independent of geometric size of crack body and boundary condition [9,10]. Yang proposed the exact analytic solutions of orthotropic composite materials with crack based on complex variable function [11][12][13][14]. Guo studied the problem of a hole with asymmetric collinear cracks in a one-dimensional hexagonal quasi-crystal [15].…”

Section: Introductionmentioning

confidence: 99%

An Analytical Solution for Anisotropic Composite Plate of Crack under Bending and Twisting

Zhang

Cui

Yang

et al. 2011

AMR

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Analysis of mechanical behaviors near crack tip for linear elastic anisotropic composite plate under bending loadings and twisting loadings was done. By introducing proper deflection function, the mechanical problem reduced to the boundary value problem of partial differential equation. The mixed mode stress intensity factor at the crack tip were presented under bending loadings and twisting loadings at infinity. By solving boundary value problem of partial differential equation and using a complex variable function method, the expressions for bending moments, strains and displacements near crack tip are derived. The obtained results are used to the theoretical research and experimental analysis of the fracture problems of composite plate.

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“…For the composite material with ∆<0 Similar to 2.1, the following expressions for bending moment, twisting moment and displacement near crack tip are derived as follows ]} ) ( Taking note of (20), the two group expressions above for bending moment, twisting moment and displacement can be transformed into polar coordinate forms [2] . The formulae for orthotropic composite plate with crack under pure bending [5,6] pure twisting [7] may be thought of as special examples of the formulae given in this paper.…”

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confidence: 99%

An Analysis of Fracture Problems of Orthotropic Composite Plate under Bending and Twisting

Zhang²,

Yang

2006

KEM

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An analysis of fracture problems near crack tip for linear elastic orthotropic composite plate under bending and twisting is carried out. By solving the boundary value problem of partial differential equations and applying the method of undetermined coefficients, the two group expressions for bending moment, twisting moment and displacement near crack tip are derived. The formulae have certain practical and referential value in related fracture analysis.

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The crack tip fields of orthotropic composite plate under bending

Cited by 4 publications

References 5 publications

The Research on Oblique Crack Tip Deformation Field of Airship Envelope Composites Based on the Digital Speckle Correlation Method

The Research on Oblique Crack Tip Deformation Field of Airship Envelope Composites Based on the Digital Speckle Correlation Method

An Analytical Solution for Anisotropic Composite Plate of Crack under Bending and Twisting

An Analysis of Fracture Problems of Orthotropic Composite Plate under Bending and Twisting

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