| 初始扭转轴压杆弯曲屈曲性能有限元验证分析 |
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| 引用本文： | 杨波,黄莺,李慧民,陈昌宏.初始扭转轴压杆弯曲屈曲性能有限元验证分析[J].四川建筑科学研究,2009,35(5). |
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| 作者姓名： | 杨波 黄莺 李慧民 陈昌宏 |
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| 作者单位： | 杨波,黄莺,李慧民(西安建筑科技大学土木工程学院,陕西,西安,710055);陈昌宏(西北工业大学力学与土木建筑学院,陕西,西安,710129) |
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| 摘 要： | 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.以有限元法对初始扭转角不同的轴压杆进行参数分析表明,弹性弯曲屈曲变形后,其位移曲线是一条空间曲线,随着初始扭转角的增加,屈曲后位移曲线偏离同一平面的幅度变大.
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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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| YANG Bo,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(5). |
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| Authors: | YANG Bo HUANG Ying LI Huimin CHEN Changhong |
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| Affiliation: | YANG Bo1,HUANG Ying1,LI Huimin1,CHEN Changhong2(1.Xi\'an University of Architecture , Technology,College of Civil Engineering,Xi\'an 710055,China,2.Institute of Mechanics , Civil Engineering,Northwestern Polytechnical University,Xi\'an 710129,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 intercouple in two principal axis directions,and the buckling critical bearing capacity is ascending.At the same time,the paper makes finite element parameter analysis of perfect axial pressure bar with variation of pre-twi... |
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| Keywords: | pre-twisted bar axial pressure elastic flexure buckling coupling finite element |
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