VARIATION OF OVALIZATION FOR SHARP-NOTCHED CIRCULAR TUBES UNDER CYCLIC BENDING

被引：16

作者：

Lee, K. -L. ^{[2
]}

Hung, C. -Y. ^{[3
]}

Pan, W. -F. ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Engn Sci, Tainan 70101, Taiwan

[2] Far E Univ, Dept Comp Applicat Engn, Tainan 74448, Taiwan

[3] Mil Acad, Dept Mech Engn, Kaohsiung 83059, Taiwan

来源：

JOURNAL OF MECHANICS | 2010年 / 26卷 / 03期

关键词：

Sharp-notched circular tubes; Cyclic bending; Ovalization; Curvature; Number of cycles; THIN-WALLED TUBES; TO-THICKNESS RATIO; EXTERNAL-PRESSURE; CURVATURE-RATE; SQUARE TUBES; STABILITY; DEGRADATION; COLLAPSE;

D O I：

10.1017/S1727719100003968

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

In this paper, an experimental investigation on the variation of ovalization for sharp-notched circular tubes subjected to cyclic bending is discussed. The tube bending machine and curvature-ovalization measurement apparatus were used to test the unnotched and sharp-notched 304 stainless steel tubes. For sharp-notched tubes, five different notch depths (0.2, 0.4, 0.6, 0.8 and 1.0mm) were considered in this study. It was found that the experimental curve of the ovalization and the number of cycles could be divided into three stages-an initial, secondary and tertiary stage. An empirical relationship was proposed for simulating the aforementioned curve for the initial and secondary stages in this study. It has been shown that the derived empirical relationship was in good agreement with the experimental data.

引用

页码：403 / 411

页数：9

共 16 条

[1] Mean moment effect on circular thin-walled tubes under cyclic bending [J].

Chang, Kao-Hua ;

Pan, Wen-Fung ;

Lee, Kuo-Long .

STRUCTURAL ENGINEERING AND MECHANICS, 2008, 28 (05) :495-514

[2] Buckling of elastic-plastic square tubes under bending [J].

Corona, E ;

Vaze, SP .

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, 1996, 38 (07) :753-775

[3] ON THE COLLAPSE OF INELASTIC TUBES UNDER COMBINED BENDING AND PRESSURE [J].

CORONA, E ;

KYRIAKIDES, S .

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, 1988, 24 (05) :505-&

[4] AN EXPERIMENTAL INVESTIGATION OF THE DEGRADATION AND BUCKLING OF CIRCULAR TUBES UNDER CYCLIC BENDING AND EXTERNAL-PRESSURE [J].

CORONA, E ;

KYRIAKIDES, S .

THIN-WALLED STRUCTURES, 1991, 12 (03) :229-263

[5] Plastic mechanism analysis of circular tubes under pure bending [J].

Elchalakani, M ;

Zhao, XL ;

Grzebieta, RH .

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, 2002, 44 (06) :1117-1143

[6] Section slenderness limits of very high strength circular steel tubes in bending [J].

Jiao, H ;

Zhao, XL .

THIN-WALLED STRUCTURES, 2004, 42 (09) :1257-1271

[7]

Kraus H., 1980, CREEP ANAL

[8] INELASTIC BUCKLING OF TUBES UNDER CYCLIC BENDING [J].

KYRIAKIDES, S ;

SHAW, PK .

JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME, 1987, 109 (02) :169-178

[9] RESPONSE AND STABILITY OF ELASTOPLASTIC CIRCULAR PIPES UNDER COMBINED BENDING AND EXTERNAL-PRESSURE [J].

KYRIAKIDES, S ;

SHAW, PK .

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, 1982, 18 (11) :957-973

[10] Experimental and theoretical evaluations of the effect between diameter-to-thickness ratio and curvature-rate on the stability of circular tubes under cyclic bending [J].

Lee, KL ;

Pan, WF ;

Hsu, CM .

JSME INTERNATIONAL JOURNAL SERIES A-SOLID MECHANICS AND MATERIAL ENGINEERING, 2004, 47 (02) :212-222

← 1 2 →