Buckling Analysis of Composite Hexagonal Lattice Cylindrical Shell using Smeared Stiffener Model

被引：49

作者：

Buragohain, M. ^{[1
]}

Velmurugan, R. ^{[2
]}

机构：

[1] Adv Syst Lab, Hyderabad 500058, Andhra Pradesh, India

[2] Indian Inst Technol, Madras 600036, Tamil Nadu, India

来源：

DEFENCE SCIENCE JOURNAL | 2009年 / 59卷 / 03期

关键词：

Buckling analysis; smeared stiffener model; SSM; lattice patterns; Ritz buckling analysis; PANELS; LOADS;

D O I：

10.14429/dsj.59.1516

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Hexagonal lattice pattern formed by helical and circumferential ribs is the most common among different possible lattice patterns. An energy-based smeared stiffener model (SSM) is developed to obtain equivalent stiffness coefficients of a composite lattice cylindrical shell with such hexagonal lattice patterns. Using the equivalent stiffness coefficients, Ritz buckling analysis was carried out. Extensive finite element modelling covering different representative sizes have been carried out. SSM is validated by comparing the estimated buckling loads. Variation of material properties of rib unidirectional composites from those of normal unidirectional composites is accounted for in the energy formulations.

引用

页码：230 / 238

页数：9

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