| 雷华,程撼,鲁阳*.用频率法测试一端固支另一端自由压杆的临界载荷[J].实验力学,2010,25(2):212~218 |
| 用频率法测试一端固支另一端自由压杆的临界载荷 |
| Frequency Method for Determination of Critical Load of Compression Column with one Fixed End and one Free End |
| 投稿时间：2009-09-22 修订日期：2009-11-08 |
| DOI： |
| 中文关键词: 频率法 临界压力 双杆对称加载 |
| 英文关键词:frequency method critical load double-column symmetrical load |
| 基金项目: |
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| 中文摘要: |
| 针对用频率法测定一端固支一端自由的杆件临界压力时，对杆件自由端的特殊约束要求，设计了一种双杆对称加载夹持装置，使杆件在承受轴向载荷作用的同时，仍然能够满足产生横向自由振动的条件。利用该装置进行频率法实验，得到了接近欧拉解的临界压力测试结果。结合实验数据分析,探讨了将频率法用于一端固支一端自由的压杆临界压力测试时，轴向压和轴向拉两种加载方式的适应性。 |
| 英文摘要: |
| A double-column symmetrical holding device was designed for determining the critical load of a compression column with one fixed end and one free end when frequency method was applied. The aim of this design is to meet the special condition of free transverse vibration on the free end of column when the column was loaded along axis direction. The designed device was used to determine the critical load of column by frequency method, results of which were close to calculated results through Euler formula. Combined with analysis of experimental data, the adaptability of axial compression and axial tension load was discussed respectively when frequency method was applied to determine critical load of column with one fixed end and one free end. |
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