| 旋转盘应力水平与温度分布的关联分析 |
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| 引用本文： | 付德斌,丁水汀,陶智,杜发荣,徐国强,吴宏伟.旋转盘应力水平与温度分布的关联分析[J].航空动力学报,2008,23(4):623-628. |
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| 作者姓名： | 付德斌 丁水汀 陶智 杜发荣 徐国强 吴宏伟 |
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| 作者单位： | 北京航空航天大学 航空发动机气动热力重点实验室, 北京 100083 |
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| 摘 要： | 基于有限元的热-弹性耦合算法,在等冷气耗量条件下,对旋转轮盘内应力水平与其表面温度分布的关联性进行了数值研究.在转速为 000 r/min,内、外缘温度分别为00℃和50℃条件下,盘面温度沿半径方向采用不同的"V"形变化时,得到了盘内等效应力水平随盘面温度分布变化的规律.计算结果表明:采用"V"形变化的盘面温度分布可以有效地降低盘内应力水平,说明了盘内应力水平与盘表面的温度分布存在着较强的关联性,在保证航空发动机整体气动性能的前提下,通过控制涡轮盘表面温度分布来有效降低轮盘的应力水平是可行的.
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| 关 键 词： | 航空、航天推进系统 应力水平 旋转轮盘 温度分布 |
| 文章编号： | 1000-8055(2008)04-0623-06 |
| 收稿时间： | 8/1/2007 12:00:00 AM |
| 修稿时间： | 2007年8月1日 |
Analysis of the effects of temperature distribution on stress level in a rotating disk |
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| FU De-bin,DING Shui-ting,TAO Zhi,DU Fa-rong,XU Guo-qiang and WU Hong-wei.Analysis of the effects of temperature distribution on stress level in a rotating disk[J].Journal of Aerospace Power,2008,23(4):623-628. |
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| Authors: | FU De-bin DING Shui-ting TAO Zhi DU Fa-rong XU Guo-qiang and WU Hong-wei |
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| Affiliation: | National Key Laboratory on Aero-engines, School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing, 100083, China |
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| Abstract: | The effects of temperature distribution on stress level in a rotating disk at a fixed flux of cooling air was numerically studied using coupled thermal-elastic method based on the finite element technique.The rotating speed is fixed at 6000 r/min,and the temperatures of inner rim and outer rim are 600 ℃ and 650 ℃,respectively.Detailed information of stress level change with surface temperature distribution of rotating disk was discussed.Numerical results reveal that there exists a strong relation between the surface temperature distribution of rotating disk and stress level inside the rotating disk.The V-shape temperature distribution can significantly reduce the stress level. |
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| Keywords: | aerospace propulsion system stress level rotating disk temperature distribution |
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