| 叠梁纯弯曲正应力的理论与实验分析 |
| |
| 引用本文： | 汤繁华,祝方才,李习平,吕晶晶. 叠梁纯弯曲正应力的理论与实验分析[J]. 实验科学与技术, 2010, 8(5): 3-4,62 |
| |
| 作者姓名： | 汤繁华 祝方才 李习平 吕晶晶 |
| |
| 作者单位： | 湖南工业大学土木工程学院,湖南株洲412008 |
| |
| 基金项目： | 湖南工业大学教学改革项目，大学生研究性学习和创新性实验计划项目 |
| |
| 摘 要： | 依据平截面假设,得出不考虑滑移的叠梁纯弯曲时的正应力公式。用AB胶将1根铝质梁和1根钢质梁组成叠梁,进行纯弯曲正应力电测实验。实验表明,叠梁只要上下梁之间粘接牢固,在弯曲变形过程中无相对错动,叠梁可视为整梁,则叠梁在纯弯曲时满足平面假设条件,按整梁计算正应力是可行的。
|
| 关 键 词： | 叠梁 纯弯曲 弯曲正应力 中性轴 |
Theoretical Analysis and Experimental Verification of Normal Stress of Stacked Beams |
| |
| TANG Fan-hua,ZHU Fang-cai,LI Xi-ping,L Jing-jing. Theoretical Analysis and Experimental Verification of Normal Stress of Stacked Beams[J]. Experiment Science & Technology, 2010, 8(5): 3-4,62 |
| |
| Authors: | TANG Fan-hua ZHU Fang-cai LI Xi-ping L Jing-jing |
| |
| Affiliation: | TANG Fan-hua,ZHU Fang-cai,LI Xi-ping,L(U) Jing-jing |
| |
| Abstract: | Based on plane cross-section assumption of normal stress distribution on cutting section,a formula is put forward consid-ering tight bonding with no slippage.An aluminum beam and a steel beam is sticked with AB glue to form a stacked beam,then a electric measurement test is designed to study normal stress distribution of cutting section.Test results shows that,with tight bonding between contact surfaces of two beams,the two beams can be considered as a unit beam,and normal stress on the cutting section satisfies plane cross-section assumption. |
| |
| Keywords: | stacked beam pure bending normal stress neutral axis |
| 本文献已被 维普 万方数据 等数据库收录！ |
|
