r Akbari Alashti - Department of Mechanical Engineering, Babol University of Technology, Babol, Iran
S. A. Latifi Rostami - Department of Mechanical Engineering, Babol University of Technology, Babol, Iran
G. H. Rahimi - Department of Mechanical Engineering, Tarbiat Modares University, Tehran, Iran

In this paper, the buckling behavior of a composite lattice cylindrical shell is studied and effects of rib defects on the distribution of stress field and buckling response of the shell is investigated. A threedimensional finite element buckling analysis of the lattice shell is carried out using ANSYS suit ofprogram. Geometrical data and material properties of the shell are obtained from the specimens made by filament winding method. Effects of various parameters including the geometrical ratios and defects of ribs on buckling response of the shell are studied. Buckling loads of composite lattice cylindricalshells under axial and shear forces are obtained experimentally and the results are compared with finite element results

Composite,Cylindrical Shell,Buckling,,Rib Defect,Finite Element