Elastoplastic analysis of cylindrically orthotropic composite lamina with a circular hole under uniform pressure

1985 ◽  
Vol 6 (8) ◽  
pp. 801-810
Author(s):  
Zhou Ci-qing
Keyword(s):  
Circular Hole ◽  
Elastoplastic Analysis ◽  
Uniform Pressure ◽  
Orthotropic Composite ◽  
Cylindrically Orthotropic

Stress Concentrations in Cylindrically Orthotropic Composite Plates With a Circular Hole

1981 ◽  
Vol 48 (3) ◽  
pp. 563-569 ◽  
Author(s):  
N. J. Hoff
Keyword(s):  
Closed Form ◽  
Circular Hole ◽  
Orthotropic Plate ◽  
Composite Plates ◽  
Stress Concentrations ◽  
Orthotropic Composite ◽  
Closed Form Solutions ◽  
Cylindrically Orthotropic

The equations governing the distribution of the stresses in a cylindrically orthotropic plate with a circular hole are solved for the case when the plate is subjected to uniform uniaxial traction. Closed-form solutions are given for the circumferential stresses along the edge of the hole.

scholarly journals Approximate Biaxial Stress Solution for Orthotropic Open-Hole Composite Laminates

1996 ◽  
Vol 5 (4) ◽  
pp. 096369359600500
Author(s):  
C. Filiou ◽  
C. Soutis
Keyword(s):  
Approximate Solution ◽  
Stress Distribution ◽  
Circular Hole ◽  
Composite Laminates ◽  
Composite Laminate ◽  
Biaxial Loading ◽  
Biaxial Stress ◽  
Orthotropic Composite ◽  
Open Hole ◽  
Simple Approximate Solution

A simple approximate solution has been derived for the stress distribution near a circular hole applicable to any orthotropic composite laminate subjected to biaxial loading. The degree of accuracy of this solution was found to be overall acceptable, but strongly dependent upon the laminate lay-up and biaxiality ratio.

Bending stresses in thin circular plates with single eccentric circular holes

1976 ◽  
Vol 11 (4) ◽  
pp. 202-224 ◽  
Author(s):  
E Ollerton
Keyword(s):  
Circular Hole ◽  
Uniform Pressure ◽  
Plate Surface ◽  
Circular Plates ◽  
Concentrated Force ◽  
Simply Supported ◽  
Bending Stresses ◽  
Circular Holes

The bending stresses in thin circular plates having a single eccentric circular hole and small deflections are reported. The plates can have any mixture of clamped and simply supported boundaries, and can be subjected to a concentrated force uniformly distributed round the inner boundary, moments about two perpendicular axes, or uniform pressure on the plate surface. A previous paper (1)∗ has described the method of analysis using bipolar co-ordinates, and has given values for deflection and slope coefficients for varying diameter ratios and eccentricities under the loads described above. The present paper discusses the stresses found in the plates under the same conditions.

Stress and Failure Analysis for Pure Bending Tubes of Cylindrically Orthotropic Composite

2014 ◽  
Vol 501-504 ◽  
pp. 2493-2498
Author(s):  
Can Hui Zhang ◽  
Pei Liu
Keyword(s):  
Failure Analysis ◽  
Conventional Technique ◽  
Polar Coordinates ◽  
Pure Bending ◽  
Composite Tubes ◽  
Orthotropic Composite ◽  
Singular Terms ◽  
Novel Approach ◽  
Cylindrically Orthotropic ◽  
Different Thickness

A novel approach is suggested for the stress and failure analysis for the pure bending of composite tubes made up of layers of angle 0° or 90° together with other arbitrary angles. The new unified coefficients as well as their nonsingular parameters are introduced to overcome the problem in an earlier approach where some of the parameters are singular for a few layer orientations even though the stresses and displacements are nonsingular. It is pointed out that such singular terms in the earlier approach cannot be simply eliminated as the conventional technique for the singular terms in the stresses in the form of polar coordinates. Otherwise, the continuity conditions at the interface between special and ordinary layers cannot be satisfied. In addition, the Tsai-Hill theory is employed for the failure analysis. Since the stresses are explicit, it is possible to exactly predict the failure positions so the calculations can be dramatically saved. The flexural stiffnesses as well as the maximum moments and their failure positions of the tube [90/±45/0] with different thickness of every layer are derived for the application and design in engineering.

On Displacement Fields in Orthotropic Laminates Containing an Elliptical Hole

2000 ◽  
Vol 67 (3) ◽  
pp. 527-539 ◽  
Author(s):  
S. M. Chern ◽  
M. E. Tuttle
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Rigid Body ◽  
Circular Hole ◽  
Orthotropic Plate ◽  
Elliptical Hole ◽  
The Finite Element Method ◽  
Displacement Fields ◽  
Orthotropic Composite ◽  
Moiré Techniques

The classical Savin solution for the stress induced in an orthotropic plate containing an elliptical hole places no restrictions on remote rigid-body rotations. In this paper the Savin procedure is used to obtain a solution for which remote rigid-body rotations are required to be zero. The validity of these new results is demonstrated by comparing predicted displacement fields near a circular hole in specially orthotropic composite panels with those measured using moire´ techniques as well as those predicted using the finite element method. [S0021-8936(00)01303-9]

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