Stress concentration of finite composite laminates weakened by multiple elliptical holes

Xu, Xiwu; Sun, Lijun; Fan, Xiangqian

doi:10.1016/0020-7683(94)00301-c

Cited by 41 publications

(23 citation statements)

References 5 publications

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“…It was demonstrated by Muc, Ulatowska [62] and Xu Xiwu et al [63]. Tan [64] introduced the approximate formulas for the stress concentration factors for the orthotropic laminated plates valid in the range 0≤b/a≤1 -Eq. (29):…”

Section: Buckling Of Cylindrical Shells With Domed Headsmentioning

confidence: 99%

Evolutionary Design of Engineering Constructions

Muc

2018

Lat. Am. j. solids struct.

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The basic information required to utilize one of possible computation tools/algorithms (mainly the evolution strategy) to solve a wide class of real practical engineering optimization problems is presented and discussed in the present paper. The effectiveness of the considered method is demonstrated by the possibility of the use of different form of objective functions, various and numerous nonlinear constraints and different types of design variables (continuous, discrete, real, integer). The sensitivity of the algorithm to the choice of the evolution strategy parameters is also discussed herein. The generality of the evolution strategy is illustrated by the analysis of various examples dealing with: the design of helical springs, the buckling of cylindrical composite panels and the buckling of pressure vessels with domed heads. Keywords optimal design; evolutionary algorithms, buckling; plated and cylindrical composite panels; pressure vessels, helical springs, strength of laminates.

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Section: Buckling Of Cylindrical Shells With Domed Headsmentioning

confidence: 99%

Evolutionary Design of Engineering Constructions

Muc

2018

Lat. Am. j. solids struct.

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“…Xiwu et al [9,10] studied a finite composite plate weakened by elliptical holes under different in-plane loading, treated as an anisotropic multiple connected plates. Using the complex potential method in the plane theory of elasticity of an isotropic body, an analytical solution concerned with stress concentration around an elliptical hole or holes in finite composite fibrous plate is obtained.…”

Section: Introductionmentioning

confidence: 99%

Three Dimensional Parametric Analyses of Stress Concentration Factor and Its Mitigation in Isotropic and Orthotropic Plate with Central Circular Hole Under Axial In-Plane Loading

Nagpal

Jain

Sanyal

2015

J. Inst. Eng. India Ser. C

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The problem of finding the stress concentration factor of a loaded rectangular plate has offered considerably analytical difficulty. The present work focused on understanding of behavior of isotropic and orthotropic plate subjected to static in-plane loading using finite element method. The complete plate model configuration has been analyzed using finite element method based software ANSYS. In the present work two parameters: thickness to width of plate (T/A) and diameter of hole to width of plate (D/A) have been varied for analysis of stress concentration factor (SCF) and its mitigation. Plates of five different materials have been considered for complete analysis to find out the sensitivity of stress concentration factor. The D/A ratio varied from 0.1 to 0.7 for analysis of SCF and varied from 0.1 to 0.5 for analyzing the mitigation of SCF. 0.01, 0.05 and 0.1 are considered as T/A ratio for all the cases. The results are presented in graphical form and discussed. The mitigation in SCF reported is very encouraging. The SCF is more sensitive to D/A ratio as compared to T/A.

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“…More recent work on this problem using complex variables include papers by Ukadgaonker and Rao (2000), Xiwu et al (1995), Wu and Cheng (1999), Chen and Hsu (1996), Bryukhanova (1967), Wang and Hasebe (2000), Tsukrov and Novak (2002), Datsyshin and Marchenko (1985), Vigdergauz (1993), Exadaktylos et al (2003), Cherkaev and Grabovsky (1998). Ukadgaonker and Rao (2000) solved the bending problem for laminated composite plates with openings of different shapes and Xiwu et al (1995) considered a finite laminate with elliptical hole under in-plane extensional and shear loads.…”

Section: Introductionmentioning

confidence: 99%

“…Ukadgaonker and Rao (2000) solved the bending problem for laminated composite plates with openings of different shapes and Xiwu et al (1995) considered a finite laminate with elliptical hole under in-plane extensional and shear loads. Datsyshin and Marchenko (1985) solved for the stress concentration around curvilinear cracks in a half-plane problem by satisfying the boundary conditions numerically using Gauss quadrature formulas.…”

Section: Introductionmentioning

confidence: 99%

Analysis of stress concentrations in plates with rectangular openings by a combined conformal mapping – Finite element approach

Louhghalam

Igusa

Park

et al. 2011

International Journal of Solids and Structures

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a b s t r a c tPlates with rectangular openings develop stress concentrations under bending. While these stresses can be determined using finite elements, in many problems this would be difficult because a high density mesh would be needed in the neighborhood of every opening corner. In this paper, it is shown how a complex-variable conformal mapping approach can be numerically coupled with the finite element method to analyze these corner stresses. This approach can be used even with relatively coarse meshes where the finite element results, by themselves, do not resolve the stress concentrations. In essence, the method relies on finite element analysis to obtain information on the stress field in a region surrounding the plate opening; this information is subsequently used to set up the parameters of the conformal mapping approach to obtain the near field stresses at the opening corners.

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Stress concentration of finite composite laminates weakened by multiple elliptical holes

Cited by 41 publications

References 5 publications

Evolutionary Design of Engineering Constructions

Evolutionary Design of Engineering Constructions

Three Dimensional Parametric Analyses of Stress Concentration Factor and Its Mitigation in Isotropic and Orthotropic Plate with Central Circular Hole Under Axial In-Plane Loading

Analysis of stress concentrations in plates with rectangular openings by a combined conformal mapping – Finite element approach

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