Stress Analysis of Grid Cylindrical Composite Shells under Axial Compression

This paper presents experimental and numerical investigation of grid cylindrical shells elastic behavior under axial compression. Grid cylindrical composite shells are combination of shell and stiffener. These structures are widely used in aerospace industries and especially in missile nose, so they are often subjected to axial loading. By stress analysis of this grid cylindrical shell, stress gradient in the shell can be obtained. There are many papers dealing with stress distribution of unreinforced composite cylindrical shell subjecting to different loading types while there are very few literatures concerning the stress analysis of grid cylindrical composite shells. In experimental part of this work strain gauges are attached in outer side of the shell. Strain field and consequently stress field are measured and calculated. The numerical modeling of structure is carried out by ABAQUS commercial software and stress distribution obtained by the two methods is compared with each other.

کلیدواژه ها:

Stress analysis ، composite shells ، stiffened shells