| 结冰翼型表面明冰的压力分布和应力计算 |
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| 引用本文： | 肖春华,桂业伟,易贤,杜雁霞.结冰翼型表面明冰的压力分布和应力计算[J].航空动力学报,2009,24(7):1457-1463. |
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| 作者姓名： | 肖春华 桂业伟 易贤 杜雁霞 |
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| 作者单位： | 中国空气动力研究与发展中心,绵阳,621000 |
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| 基金项目： | 国家自然科学基金(10672174) |
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| 摘 要： | 在不同来流速度和攻角下,比较分析了冰型外部压力分布的变化规律,计算分析了外部压力分布对表面冰型的力学特性影响规律,研究了冰型和蒙皮界面间最大剪切应力的变化规律,并结合剪切强度随界面温度变化的实验曲线,分析了最大剪切应力对冰层脱落的贡献.计算结果表明:最大剪切应力是剪切强度的5.48%,因此气动力对冰层的脱落贡献不大;当开启热除冰装置后,由于蒙皮表面温度的不断上升,冰型和蒙皮界面间剪切强度的下降,当表面温度为-2℃时,最大剪切应力超过剪切强度的10%,此位置可能率先产生破裂,从而加速冰层的脱落.
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| 关 键 词： | 结冰翼型 明冰 压力分布 应力计算 有限元 |
| 收稿时间： | 2008/6/26 0:00:00 |
| 修稿时间： | 2008/9/25 0:00:00 |
Pressure distribution and stress calculation of glaze ice on iced airfoil |
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| XIAO Chun-hu,GUI Ye-wei,YI Xian and DU Yan-xia.Pressure distribution and stress calculation of glaze ice on iced airfoil[J].Journal of Aerospace Power,2009,24(7):1457-1463. |
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| Authors: | XIAO Chun-hu GUI Ye-wei YI Xian and DU Yan-xia |
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| Institution: | China Aerodynamics Research and Development Center;Mianyang 621000;China |
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| Abstract: | Under different air velocity and attack angle conditions,the variation of pressure distribution along glaze ice on airfoil was analyzed.The effect of pressure distribution on mechanics characteristics of glaze ice on airfoil was investigated.And variation of max shear stress of interface between glaze ice and airfoil was investigated.Combined with experimental curve of shear strength vs.temperature on interface,the contribution of max shear stress to ice shed was analyzed.The results show that max shear str... |
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| Keywords: | iced airfoil glaze ice pressure distribution stress calculation finite element analysis |
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