BUCKLING LIFE ESTIMATION OF CIRCULAR TUBES OF DIFFERENT MATERIALS UNDER CYCLIC BENDING

被引：1

作者：

Lee, Kuo-Long ^{[2
]}

Hung, Chao-Yu ^{[3
]}

Chang, Hao-Yuan ^{[1
]}

Pan, Wen-Fung ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Engn Sci, Tainan 701, Taiwan

[2] Far E Univ, Dept Comp Applicat Engn, Tainan 744, Taiwan

[3] ROC Mil Acad, Dept Mech Engn, Kaohsiung 830, Taiwan

来源：

JOURNAL OF THE CHINESE INSTITUTE OF ENGINEERS | 2010年 / 33卷 / 02期

关键词：

circular tubes of different materials; cyclic bending; moment; curvature; ovalization; buckling life estimation; THIN-WALLED TUBES; TITANIUM-ALLOY TUBES; TO-THICKNESS RATIO; CURVATURE-RATE; STEEL TUBES; COLLAPSE; STABILITY; PRESSURE;

D O I：

10.1080/02533839.2010.9671609

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, the buckling life estimation of circular tubes of different materials subjected to cyclic bending is investigated. A tube-bending machine and a curvature-ovalization measurement apparatus were used to conduct the curvature-controlled cyclic bending test. Materials of the tested circular tubes include 304 stainless steel, 316L stainless steel, 70:30 brass, 7005-T53 aluminum alloy and Ti-2Al-Cb-Ta titanium alloy. The mechanical behavior (moment - curvature and ovalization - curvature relationships) and buckling life (relationship between the controlled curvature and number of cycles necessary to produce buckling) were constructed according to the experimental measured data. The endochronic theory combined with the principle of virtual work was used to simulate the mechanical behavior of circular tubes of different materials. In addition, a theoretical formulation was proposed for estimating the buckling life of circular tubes of different materials. It has been shown that the simulation results are in good agreement with the experimental data.

引用

页码：177 / 189

页数：13

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