Manufacture and buckling test of a variable-stiffness, variable-thickness composite cylinder under axial compression

Results from Finite Element (FE) study on the response of composite cylinder shells with cutouts and subjected to internal pressure and axial compression are presented. The objective of the study is to improving the buckling load by applying the internal pressure whilst the compression load is applied. The effect of localized stress concentration distributed around the cutout region also being examined. The numerical results are obtained using ABAQUS finite element code software package. The composite cylinder shells were tested in two conditions which are a combination of axial compression load with internal pressure and a single axial compression load. The effects of varying internal pressure and cutout size on the pre-buckling, buckling, and post-buckling responses of the shell are demonstrated. Reasonable results comparison was obtained by reviewing previous literature. Results indicated that the load distribution and displacement of the cutout significantly influence the structural response of the shell. The results also indicate that the stress distributions can be affected by the size of the cutout under axial compression load.

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Implementation of Fiber Optic Sensing System on Sandwich Composite Cylinder Buckling Test

2018 AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference ◽

10.2514/6.2018-1695 ◽

2018 ◽

Cited By ~ 1

Author(s):

Francisco Pena ◽

W. L. Richards ◽

Allen R. Parker ◽

Anthony Piazza ◽

Marc R. Schultz ◽

...

Keyword(s):

Fiber Optic ◽

Sandwich Composite ◽

Composite Cylinder ◽

Sensing System ◽

Fiber Optic Sensing ◽

Buckling Test

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Buckling analysis of an imperfection-insensitive hybrid composite cylinder under axial compression – numerical simulation, destructive and non-destructive experimental testing

Composite Structures ◽

10.1016/j.compstruct.2019.111152 ◽

2019 ◽

Vol 225 ◽

pp. 111152 ◽

Cited By ~ 12

Author(s):

H.N.R. Wagner ◽

E. Petersen ◽

R. Khakimova ◽

C. Hühne

Keyword(s):

Numerical Simulation ◽

Axial Compression ◽

Hybrid Composite ◽

Experimental Testing ◽

Buckling Analysis ◽

Composite Cylinder ◽

Non Destructive

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The effect of the percentage of steered plies on the bending-induced buckling performance of a variable stiffness composite cylinder

Science and Engineering of Composite Materials ◽

10.1515/secm-2014-0258 ◽

2015 ◽

Vol 22 (2) ◽

pp. 149-156 ◽

Cited By ~ 8

Author(s):

Mohammad Rouhi ◽

Hossein Ghayoor ◽

Suong V. Hoa ◽

Mehdi Hojjati

Keyword(s):

Performance Improvement ◽

Design Procedure ◽

Laminated Composite ◽

Variable Stiffness ◽

Design Parameters ◽

Composite Cylinder ◽

Element Analysis ◽

Fiber Placement ◽

Structural Improvement ◽

Automated Fiber Placement

AbstractThe fiber steering capability of automated fiber placement machines offers the designers more room to fully exploit the directional properties of composite materials. Circumferential stiffness tailoring by fiber steering can considerably increase the bending-induced buckling performance of laminated composite cylinders. The potential structural improvement resulting from fiber steering depends on different design parameters such as the number of plies considered for fiber steering in a laminate. In this study, the buckling performance improvement of a variable stiffness (VS) composite cylinder is investigated for different percentages of plies considered for fiber steering in a multilayered composite laminate. A surrogate-based modeling along with a multi-step optimization is used in the design procedure of this study. The improvements in the buckling performance are shown and verified using finite element analysis in ABAQUS software. The mechanisms leading to buckling performance improvement of VS composites are also investigated and presented for different percentages of fiber-steered plies.

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