Effect of an elastically deformed ring on the stress distribution in a spherical shell with a circular hole

1980 ◽  
Vol 16 (9) ◽  
pp. 773-777
Author(s):  
B. L. Pelekh ◽  
A. A. Galasi ◽  
A. Yu. Gleba
Keyword(s):  
Stress Distribution ◽  
Spherical Shell ◽  
Circular Hole

Research of the Connecting Form about the Spherical Shell and the Nozzle

2011 ◽  
Vol 413 ◽  
pp. 520-523
Author(s):  
Cai Xia Luo
Keyword(s):  
Finite Element ◽  
Stress Distribution ◽  
Finite Element Model ◽  
Spherical Shell ◽  
Maximum Stress ◽  
Peak Stress ◽  
Element Model ◽  
Small Opening ◽  
Large Opening ◽  
Reducing Stress

The Stress Distribution in the Connection of the Spherical Shell and the Opening Nozzle Is Very Complex. Sharp-Angled Transition and Round Transition Are Used Respectively in the Connection in the Light of the Spherical Shell with the Small Opening and the Large One. the Influence of the Two Connecting Forms on Stress Distribution Is Analyzed by Establishing Finite Element Model and Solving it. the Result Shows there Is Obvious Stress Concentration in the Connection. Round Transition Can Reduce the Maximum Stress in Comparison with Sharp-Angled Transition in both Cases of the Small Opening and the Large Opening, Mainly Reducing the Bending Stress and the Peak Stress, but Not the Membrane Stress. the Effect of Round Transition on Reducing Stress Was Not Significant. so Sharp-Angled Transition Should Be Adopted in the Connection when a Finite Element Model Is Built for Simplification in the Future.

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.

The Fatigue Crack and Delamination Behavior on the Fuselage-Wing Intersection Containing Variable Notches

2003 ◽  
Vol 17 (08n09) ◽  
pp. 1540-1546 ◽  
Author(s):  
Sam Hong Song ◽  
Cheol Woong Kim
Keyword(s):  
Fatigue Crack ◽  
Stress Distribution ◽  
Crack Propagation ◽  
Circular Hole ◽  
Fatigue Crack Propagation ◽  
Aluminum Layer ◽  
Fiber Layer ◽  
Stress Criterion ◽  
Fatigue Crack Propagation Behavior ◽  
Propagation Behavior

The delamination and the fatigue crack propagation behavior in aramid fiber reinforced metal laminates(AFRMLs) containing a saw-cut and circular hole such as the fuselage-wing intersection was investigated. The fatigue crack propagation in aluminum layer is accompanied with the delamination between aluminum layer and fiber layer. The delamination deteriorates the fiber bridging mechanism in the crack tip of AFRMLs. Therefore, this study evaluates the stress distribution of AFRMLs containing a saw-cut and circular hole using the Average Stress Criterion (ASC) model. The delamination zone was observed by ultrasonic C-scan images. As the result of this study, in case of AFRMLs containing a saw-cut specimen. the fatigue crack propagation always occurred in aluminum layer and the delamination zone formed along the fatigue crack. However, in case of AFRMLs containing a circular hole specimen, the delamination zone was formed in two types. First, delamination zone was formed along the fatigue crack in aluminum layer. Second, delamination zone was formed without any fatigue crack around the circular hole. Consequently, delamination zone was formed dependently on the notch shape and the stress distribution.

Stress distribution around a reinforced hole in a spherical shell

1975 ◽  
Vol 11 (2) ◽  
pp. 209-211
Author(s):  
A. G. Makarenkov ◽  
V. A. Firsov
Keyword(s):  
Stress Distribution ◽  
Spherical Shell

scholarly journals A Green’s Function Approach for Dynamic Stress Analysis of Spherical Shell under the Isotropic Impact Load

2015 ◽  
Vol 2015 ◽  
pp. 1-7
Author(s):  
Jincheng Lv ◽  
Shike Zhang ◽  
Xinsheng Yuan
Keyword(s):  
Stress Distribution ◽  
Spherical Shell ◽  
Green’S Function ◽  
Green's Function ◽  
Dynamic Stress ◽  
Initial Conditions ◽  
Impact Load ◽  
Static Solution ◽  
Function Approach ◽  
Dynamic Stress Distribution

A Green’s function approach is developed for the analytic solution of thick-walled spherical shell under an isotropic impact load, which involves building Green’s function of this problem by using the appropriate boundary conditions of thick-walled spherical shell. This method can be used to analyze displacement distribution and dynamic stress distribution of the thick-walled spherical shell. The advantages of this method are able(1)to avoid the superposition process of quasi-static solution and free vibration solution during decomposition of dynamic general solution of dynamics,(2)to well adapt for various initial conditions, and(3)to conveniently analyze the dynamic stress distribution using numerical calculation. Finally, a special case is performed to verify that the proposed Green’s function method is able to accurately analyze the dynamic stress distribution of thick-walled spherical shell under an isotropic impact load.

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