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| 某无人直升机桨毂高周疲劳寿命计算 | |
| 引用本文： | 谢勤伟,姜年朝,周光明.某无人直升机桨毂高周疲劳寿命计算[J].机械与电子,2012(4):62-64. |
| 作者姓名： | 谢勤伟 姜年朝 周光明 |
| 作者单位： | 1. 总参六十所,江苏南京,210016 2. 总参六十所,江苏南京210016;南京航空航天大学航空宇航学院,江苏南京210016 3. 南京航空航天大学航空宇航学院,江苏南京,210016 |
| 基金项目： | 国家自然科学基金(10772079) |
| 摘 要： | 桨毂是直升机的关键件,其寿命直接关系到直升机的寿命。基于ANSYS软件,计算某无人直升机桨毂在一次飞行任务中各组载荷下的应力水平,以Lagrange插值法拟合材料手册中S-N曲线,得到桨毂在每组应力水平下的疲劳寿命循环数,再根据Miner损伤累积理论,计算桨毂在该飞行任务时的可用小时数。将上述算法,编译生成可执行文件,实现桨毂寿命计算的自动化。 |
| 关 键 词： | 无人直升机 旋翼桨毂 高周疲劳 S-N曲线 Miner损伤累积理论 |
High Cycle Fatigue Analysis of Blade Hub for an Unmanned Helicopter |
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| XIE Qin-wei , JIANG Nian-zhao , ZHOU Guang-ming.High Cycle Fatigue Analysis of Blade Hub for an Unmanned Helicopter[J].Machinery & Electronics,2012(4):62-64. | |
| Authors: | XIE Qin-wei JIANG Nian-zhao ZHOU Guang-ming |
| Affiliation: | 1.The Sixtieth Institute of the Headquarters of the General,Nanjing 210016,China;2.College of Aerospace Engineering,Nanjing University of Aerospace and Astronautics,Nanjing 2100164,China) |
| Abstract: | Blade hub is the key component of unmanned helicopter and is the main factor which influences the life of helicopter.Based on ANSYS,the stress has been solved under each load in a typical rotor connector’s load spectrum.S-N curve under each stress are fitted from S-N curve of material handbook,via Lagrange interpolation method.Then damage is computed by Miner cumulative rules.Finally,fatigue life can be converted,via relationship of damage and this load spectrum.Meanwhile,a program,which contains steps mentioned above,is built to compute the fatigue life for blade hub automatically. |
| Keywords: | unmanned helicopter blade hub high cycle fatigue S-N curve miner damage cumulative rules |
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