求变截面梁位移方法的研究 |
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引用本文: | 贾建国,李长辉,武振亚.求变截面梁位移方法的研究[J].河北工程大学学报,2011,28(1):19-21,29. |
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作者姓名: | 贾建国 李长辉 武振亚 |
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作者单位: | 中铁六局集团天津铁路建设有限公司;天津大学; |
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摘 要: | 实际工程中比较常见的变截面梁,其抗弯刚度是一个变量,在进行其刚度计算时,用各种方法求出其挠曲线方程,然后根据方程再求出梁的最大位移,从而对该变截面梁进行刚度校核并使其安全可靠.本文针对变截面梁,提出了求位移的单位力法、积分法、最小势能原理法,通过实例验证了所提方法的正确性,这无论对于实际工程应用还是理论研究都具有重要的...
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关 键 词: | 变截面梁 抗弯刚度 最小势能原理 挠曲线方程 |
收稿时间: | 4/2/2011 12:00:00 AM |
修稿时间: | 4/2/2011 12:00:00 AM |
Study on methods for solving displacement of non-uniform beams |
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Authors: | JIA Jian-guo LI Chang-hui and WU Zhen-ya |
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Affiliation: | JIA Jian-guo1,LI Chang-hui2,WU Zhen-ya1(1.CRC of Sixth Branch of Chinese Railways,Tianjin 300140,China,2.Tianjin University,Tianjin 300072,China) |
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Abstract: | In solving displacement of non-uniform beams,all of the textbooks and documents about mechanics of materials expatiate upon uniform beams,whose flexural rigidity EI is constants,while seldom about non-uniform beams.But non-uniform beams whose flexural rigidity EI is variable quantity,are very popular in the practical engineering.When we calculate for rigidity of the non-uniform beams,we achieve firstly equations of deflection curve by making use of various methods.Then obtain the maximum displacement throug... |
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Keywords: | non-uniform beam flexural rigidity principle of minimum potential energy equation of deflection curve |
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