| 郭彦林,梅占馨.薄壁截面梁的歪曲屈曲[J].计算力学学报,1992,9(2): |
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| 薄壁截面梁的歪曲屈曲 |
| Distortional Buckling of Thin-Walled Beams |
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| DOI：10.7511/jslx19922020 |
| 中文关键词: 薄壁梁,歪曲屈曲,样条有限条 |
| 英文关键词:thin-walled beam,distortional buckling,spline finite strip, |
| 基金项目:国家自然科学基金，青年基金 |
| 郭彦林 梅占馨 |
| 西北工业大学建工系，西安冶金建筑学院建工系 710000 |
| 摘要点击次数: 1391 |
| 全文下载次数: 7 |
| 中文摘要: |
| 本文在梁的整体屈曲分析中,废除了传统的刚性截面假定(刚周边假定),允许梁截面自由地歪曲,进而研究了薄壁截面梁的歪曲屈曲性能。分析中采用了样条有限条法,考虑了各种不同的荷载形式、支承条件和边界约束。这一方法与有限元法相比较,计算工作量大大地减少。数值计算结果表明,在梁长细比的较大范围内,歪曲屈曲模型对梁的设计起控制作用。 |
| 英文摘要: |
| A spline finite strip method is developed to study the distortional buckling of thin-walled beams with slender plate elements in the elastic range. The method is very efficient and versatile since it can deal with the beams with various prescribed boundary conditions, internal supports, concentrated and patch loading,etc. The spline finite strip method is shown in good agreement with the established results. A lot of numerical results obtained show that the distortional mode of buckling may control the design of the thin-walled beams for certain geometries. |
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