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Stability Analysis Of Composite Panels With Stiffeners And Circular Cutouts

Submitted2010-03-09
Last Update2010-03-11
TitleStability Analysis Of Composite Panels With Stiffeners And Circular Cutouts
Author(s)Author #1
Author title:
Name: Husam Al-Qablan
Org: Department of Civil Engineering, Hashemite University, Zarqa, Jordan
Country: 0
Email: hqablan@hotmail.com

Author #2
Author title:
Name: Hazim Dwairi
Org: Department of Civil Engineering, Hashemite University, Zarqa, Jordan
Country: 0
Email:

Author #3
Author title:
Name: Nasim Shatarat
Org: Department of Civil Engineering, Hashemite University, Zarqa, Jordan
Country: 0
Email:

Author #4
Author title:
Name: Taleb Rosan
Org: Department of Civil Engineering, Hashemite University, Zarqa, Jordan
Country: 0
Email:

Author #5
Author title:
Name: Tamara Al-Qablan
Org: Department of Information Technology, Al-Huson University College, Al-Balqa Applied University, Al-Huson, Jordan
Country: 0
Email:

Other Author(s)
Contact AuthorAuthor #1
Alt Email: hqablan@hotmail.com
Telephone:
KeywordsBuckling, Stiffened panels, Cutouts, FE analysis, Composite structures
AbstractBuckling of simply supported square orthotropic plates with multi-blade stiffeners is addressed herein. An approximate, semi-analytical model for such plates subjected to in-plane loading is derived. The optimal buckling load of simply supported laminated composite blade-stiffened panels with circular cutouts is predicted using Finite Element Analysis. In this optimization, the design variables were the cutout size, cutout location, fiber orientation angles, number and locations of stiffeners. Three types of in-plane loading were considered; namely, uniaxial, biaxial and shear loading. Based on the model studies, the total increase in the buckling load due to the presence of cutouts and stiffeners can reach up to 5 times in uniaxial loading, 7 times in biaxial loading and 2 times in shear loading compared to perfect plates. Several other imperative findings are identified based upon the various parameters influencing the buckling behavior. Guidelines for the optimal stiffeners' configurations and cutouts' proportioning are developed.
Paperview paper 114.pdf (4399KB)

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