| 引用本文: | 黄铁球,阎绍泽.单轴扫频诱发帆板同步钢索旋转振动分析[J].哈尔滨工业大学学报,2014,46(11):70.DOI:10.11918/j.issn.0367-6234.2014.11.012 |
| HUANG Tieqiu,YAN Shaoze.Whirling response analysis of a cable on solar array under single-axial swept frequency excitation[J].Journal of Harbin Institute of Technology,2014,46(11):70.DOI:10.11918/j.issn.0367-6234.2014.11.012 |
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| 摘要: |
| 为明确某帆板面内单轴扫频力学环境试验中同步钢索振动幅度过大和限位结构被破坏的原因,考虑集中质量和限位结构影响,采用有限段方法建立帆板同步钢索系统的动力学模型,对其在面内单轴扫频激励条件的响应进行数值模拟,结果再现了标志点的响应从面内振动发展到面外振动,再到绕两支撑点轴旋转振动的复杂振动模式,同时给出限位接触力和钢索标志点振幅,仿真结果与试验状态吻合．分析表明,持续旋转振动钢索施加在限位孔壁上的交变接触力是导致限位结构破坏的主要原因． |
| 关键词: 帆板 钢索 旋转振动 有限段方法 多体动力学 扫频激励 |
| DOI：10.11918/j.issn.0367-6234.2014.11.012 |
| 分类号:V415.4 |
| 基金项目:中央高校基本科研业务费专项资金(2011JBM105)． |
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| Whirling response analysis of a cable on solar array under single-axial swept frequency excitation |
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HUANG Tieqiu1, YAN Shaoze2
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(1. School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, 100044 Beijing, China; 2. Dept. of Precision Instruments and Mechanology, Tsinghua University, 100084 Beijing, China)
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| Abstract: |
| To find the reason of limiting hole fracture and over-expected vibration amplitude on the mechanical environmental test to a Close Cable Loop(CCL) under only single-axial inner-plane swept frequency excitation, the finite segment method of multi-body dynamics was introduced to model and simulate the cable system with a concentrated mass and a position limiting hole, the cable vibration response and the contact force in limiting hole were obtained. The results showed that the vibration response started from inner-plane vibration to outer-plane vibration and to continuous rotational vibration. Cable vibration amplitude enhanced continuously due to rotational vibration process, and attenuated suddenly. The response process and vibration amplitude was coincided with the test. Continuous rotational vibration under swept frequency excitation is the key reason for the problem of fractures. |
| Key words: solar panel steel string rotational vibration finite-segment method multi-body dynamics swept frequency excitation |
