Stability Analysis of Composite Panels with Stiffeners and Circular Cutouts
Journal: Jordan Journal of Civil Engineering (JJCE) (Vol.4, No. 2)Publication Date: 2010-04-01
Authors : Husam Al-Qablan; Hazim Dwairi; Nasim Shatarat; Taleb Rosan; Tamara Al-Qablan;
Page : 119-131
Keywords : Buckling; Stiffened panels; Cutouts; FE analysis; Composite structures;
Abstract
Buckling 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.
Other Latest Articles
- Symmetrical and Anti-Symmetrical Buckling of Long Corroded Cylindrical Shell Subjected to External Pressure
- Investigation into Self-calibration Methods for the Vexcel UltraCam D Digital Aerial Camera
- Analysis of Accident Data and Evaluation of Leading Causes for Traffic Accidents in Jordan
- Numerical Approach of the Littoral Instability of Chalk Cliffs: Case of Grandes Dalles (The Large Flagstones)
- The Use of GIS and Leachability Tests to Investigate Groundwater Vulnerability to Pollution from Oil Shale Utilization at Lajjoun Area/Southern Jordan
Last modified: 2014-10-11 19:20:30