Scaling Methodology for Buckling of Sandwich Composite Cylindrical Structures

Balbin, Ines Uriol ; Bisagni, Chiara ; Schultz, Marc R ; Hilburger, Mark W

关键词: BUCKLING;    COMPOSITE STRUCTURES;    CYLINDRICAL BODIES;    SANDWICH STRUCTURES;    SHEAR STRESS;    FINITE ELEMENT METHOD;    TRANSVERSE LOADS;   

RP-ID  :  NF1676L-27360

学科分类：复合材料

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

The study of the buckling behavior of large shell structures through full-size tests can be complex and expensive. Therefore, scaled structures are often preferred to investigate the buckling behavior efficiently. However, it can be difficult to design scaled structures that are representative of the full-scale structures. Herein, an analytical scaling methodology for compression-loaded sandwich composite cylinders based on the nondimensionalization of the buckling equations is presented. The methodology is used to develop scaled configurations that show a similar buckling response. Both the baseline and the scaled configurations are verified by finite-element analysis. Limitations of the methodology are discussed and are a result of neglecting the flexural anisotropy and the transverse shear compliance.