| 冲击载荷作用下的锥壁失效仿真及试验验证 |
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| 引用本文： | 虞磊,耿景艳,李百洋,王卫国,曹家健,吴海龙,周青. 冲击载荷作用下的锥壁失效仿真及试验验证[J]. 航空动力学报, 2021, 36(5): 916-922. DOI: 10.13224/j.cnki.jasp.2021.05.003 |
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| 作者姓名： | 虞磊 耿景艳 李百洋 王卫国 曹家健 吴海龙 周青 |
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| 作者单位： | 中国航空发动机集团有限公司商用航空发动机有限责任公司,上海200241;清华大学苏州汽车研究院,江苏苏州215134 |
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| 摘 要： | 根据航空发动机支承锥壁结构受力特点,对风扇叶片飞失冲击载荷作用下的锥壁失效破坏机理进行了研究.利用显式动力学有限元仿真方法,对冲击载荷作用下的锥壁结构动态失效过程进行了瞬态分析.开展了对锥壁的落锤冲击试验,并与分析结果进行了对比验证.试验和分析结果表明:冲击载荷作用下锥壁减薄处破坏为剪切失效破坏.采用的显式动力学有限元...
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| 关 键 词： | 冲击载荷 风扇叶片飞失 锥壁 动态失效 显式动力学 |
| 收稿时间： | 2020-02-12 |
Failure simulation and test verification of cone under impact load |
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| YU Lei,GENG Jingyan,LI Baiyang,WANG Weiguo,CAO Jiajian,WU Hailong,ZHOU Qing. Failure simulation and test verification of cone under impact load[J]. Journal of Aerospace Power, 2021, 36(5): 916-922. DOI: 10.13224/j.cnki.jasp.2021.05.003 |
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| Authors: | YU Lei GENG Jingyan LI Baiyang WANG Weiguo CAO Jiajian WU Hailong ZHOU Qing |
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| Affiliation: | 1.Commercial Aircraft Engine Company Limited,Aero Engine Corporation of China,Shanghai 200241,China2.Suzhou Automotive Research Institute, ,Tsinghua University,Suzhou Jiangsu 215134,China |
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| Abstract: | According to the load characteristics of aeroengine supporting cone structure, the failure mechanism of cone under the impact load of fan blade out was studied.By using the explicit dynamic finite element simulation method, transient analysis on the dynamic failure process of the cone structure under the impact load was carried out. The drop impact test of the cone was carried out, and the test results were compared with the analysis results. It was discovered that the failure of the cone thinning position under impact load was shear failure. The explicit dynamic finite element simulation method provided a feasible method for accurately simulating the failure of the cone failure under impact load, the error between the peak acceleration obtained by analysis and the test result was less than 5%. The GISSMO (generalized incremental stress state dependent damage model) can be used to accurately predict the fracture time and position at the cone thinning position.The analysis method and failure model verified by the test can be used to determine the failure design parameters of the cone under the impact load of fan blade out, so as to improve the accuracy of the load reducion design of the cone structure. |
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| Keywords: | impact load fan blade out cone dynamic failure explicit dynamics |
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