杆件纵横弯曲时热屈曲临界长度的确定

doi:10.3863/j.issn.1000-2634.1993.01.014

西南石油大学学报(自然科学版) ›› 1993, Vol. 15 ›› Issue (1): 90-96.DOI: 10.3863/j.issn.1000-2634.1993.01.014

杆件纵横弯曲时热屈曲临界长度的确定

李有兴

石油机械系

收稿日期:1992-06-24 修回日期:1900-01-01 出版日期:1993-02-20 发布日期:1993-02-20

DETERMINATION OF CRITICAL LENGTH OF THERMAL BUCKLING DURING LONGITUDINAL AND TRANSVERSE BENDING OF BARS

Li Youxing

Department of mechanical Engineering

Received:1992-06-24 Revised:1900-01-01 Online:1993-02-20 Published:1993-02-20

摘要/Abstract

摘要： 经过计算分析，得出了杆件纵横弯曲时临界压力的普遍表达式。同时，从欧拉应力出发，应
用可靠性理论，导出了杆件在热曲时临界温度和临界长度的计算公式，并用实例说明了应用。这为杆件热曲问题的计算，提拱了一种新的分析方法；为热输管道的稳定性分析，提供了依据。

关键词: 纵横弯曲, 热屈曲, 临界温度, 可靠性理论

Abstract: Through calculation and analysis,we obtained the general expression of the critical pressure during longitudinal and transverse bending of bars,derives,on the basis of Euler stress,the calculating formula of critical temperature and length during longitudinal and transverse bending of bars by the reliabilty theory.It provides a new analysis method for the calculation of thermal buckling problems of bars,and a base for stability analysis of heating t ransportation pipelines.

Key words: longitudinal and transverse bending, thermal buckling, critical temperature, reliability theory

中图分类号:

TB301

李有兴. 杆件纵横弯曲时热屈曲临界长度的确定[J]. 西南石油大学学报(自然科学版), 1993, 15(1): 90-96.

Li Youxing. DETERMINATION OF CRITICAL LENGTH OF THERMAL BUCKLING DURING LONGITUDINAL AND TRANSVERSE BENDING OF BARS[J]. 西南石油大学学报(自然科学版), 1993, 15(1): 90-96.

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[1]	黄文君*，高德利. 受井眼约束带接头管柱的纵横弯曲分析[J]. 西南石油大学学报(自然科学版), 2015, 37(5): 152-158.
[2]	谢英袁宗明. 用数值积分方法计算埋地热油管道的轴向温降[J]. 西南石油大学学报(自然科学版), 2005, 27(5): 78-81.

杆件纵横弯曲时热屈曲临界长度的确定

DETERMINATION OF CRITICAL LENGTH OF THERMAL BUCKLING DURING LONGITUDINAL AND TRANSVERSE BENDING OF BARS

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