A NEW DESIGN METHOD FOR AXIALLY LOADED THIN-WALLED CYLINDRICAL SHELLS BASED ON ELASTO-PLASTIC BUCKLING ANALYSIS

被引：0

作者：

Jiao, Peng ^{[1
]}

Chen, Zhiping ^{[1
]}

Ma, He ^{[1
]}

机构：

[1] Zhejiang Univ, Inst Proc Equipment, Hangzhou 310027, Zhejiang, Peoples R China

来源：

PROCEEDINGS OF THE ASME PRESSURE VESSELS AND PIPING CONFERENCE, 2019, VOL 3 | 2019年

基金：

中国国家自然科学基金;

关键词：

Thin-walled cylindrical shells; Buckling; Geometric imperfections; Four perturbation load approach; Design method; ROBUST KNOCKDOWN FACTORS; COMPRESSION; SIMULATION; CYLINDERS;

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In engineering, thin-walled cylindrical shells subjected to axial compression load are very sensitive to geometric imperfections and are prone to buckling. However, how to reasonably take into account the influence of geometric imperfections on the load carrying capacity of thin-walled cylindrical shells is always the bottleneck of light-weight design of these structures. In this paper, four perturbation load approach (4PLA) is adopted to consider the influence of geometric imperfections. By judging the potential buckling status of cylindrical shells, a new improved design method based on 4PLA for thin-walled cylindrical shells is proposed, in which the influence of radius-to-thickness ratio, length-to-radius ratio, Young's modulus and material yield strength are systematically considered. Correspondingly, the buckling tests for two steel cylindrical shells with the same geometric and material parameters are conducted. Compared with the experimental results and other test results in open literatures, the superiority and safety of proposed method for the preliminary design of thin-walled cylindrical shells are validated.

引用

页数：9

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