| 初始扭转轴压杆弹性弯曲屈曲性能研究 |
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| 引用本文： | 黄莺,李慧民,陈昌宏.初始扭转轴压杆弹性弯曲屈曲性能研究[J].四川建筑科学研究,2009,35(1). |
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| 作者姓名： | 黄莺 李慧民 陈昌宏 |
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| 作者单位： | 1. 西安建筑科技大学土木工程学院,陕西,西安,710055
2. 东南大学土木工程学院,江苏,南京210096 |
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| 摘 要： | 初始扭转杆在工程设计中有着广泛的应用.通过对初始扭转轴压杆弹性弯曲屈曲性能的研究表明,初始扭转轴压杆弹性弯曲屈曲位移在两截面主轴平面上相互耦合.初始扭转角使得强轴对压杆绕弱轴的屈曲位移产生"抵抗"作用,从而提高了杆的弹性弯曲屈曲临界荷载.同时,提出基于初始扭转轴压杆弹性弯曲屈曲变形后的位移曲线是平面位移曲线的假定,提出需进一步验证分析.
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| 关 键 词： | 初始扭转杆 轴压 弯曲屈曲 耦合 有限元 |
Research of elastic flexure buckling performance of pre-twisted bar under axial pressure |
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| HUANG Ying,LI Huimin,CHEN Changhong.Research of elastic flexure buckling performance of pre-twisted bar under axial pressure[J].Building Science Research of Sichuan,2009,35(1). |
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| Authors: | HUANG Ying LI Huimin CHEN Changhong |
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| Affiliation: | HUANG Ying1,LI Huimin1,CHEN Changhong2(1.Xi'an University of Architecture , Technology,College of Civil Engineering,Xi'an710055,China,2.College of Civil Engineering,Southeast University,Nanjing210096,China) |
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| Abstract: | Pre-twisted construction members have wide-ranging application in engineering design.This paper investigates into the elastic flexure buckling performance of such members under axial pressure.The study indicates the buckling equilibrium equations of pre-twisted perfect axial pressure bar inter-couple in two principal axis directions,and the buckling critical bearing capacity is ascending.At the same time,reversing the initial proposed in this paper-based flexible shaft bar bending buckling after the displac... |
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| Keywords: | pre-twisted bar axial pressure elastic flexure buckling coupling finite element |
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