| 粉末冶金盘损伤容限的边界元分析 |
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| 引用本文： | 魏大盛,王延荣,陆利蓬.粉末冶金盘损伤容限的边界元分析[J].航空动力学报,2009,24(6):1299-1304. |
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| 作者姓名： | 魏大盛 王延荣 陆利蓬 |
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| 作者单位： | 北京航空航天大学,能源与动力工程学院,北京,100191 |
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| 基金项目： | 凡舟青年科研基金(20080403) |
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| 摘 要： | 采用边界元法建立了裂纹扩展分析模型,对FGH95粉末高温合金标准紧凑拉伸(CT)试样的裂纹扩展试验结果进行了数值模拟,计算结果与试验吻合很好,表明分析方法的准确性及可行性.在对粉末高温合金缺陷数据分析的基础上,建立了粉末盘损伤容限边界元分析模型,对其裂纹扩展寿命进行了评估.研究表明:边界元法在损伤容限分析中的实现便捷可行,可应用于复杂构件裂纹扩展特性的工程分析,与传统预测方法相比,能够给出更为合理的寿命结果.
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| 关 键 词： | 粉末高温合金 损伤容限 裂纹扩展 边界元法 |
| 收稿时间： | 3/4/2008 12:00:00 AM |
| 修稿时间： | 2009/4/18 0:00:00 |
Boundary element analysis of damage tolerance of powder metallurgy turbine disk |
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| WEI Da-sheng,WANG Yan-rong and LU Li-peng.Boundary element analysis of damage tolerance of powder metallurgy turbine disk[J].Journal of Aerospace Power,2009,24(6):1299-1304. |
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| Authors: | WEI Da-sheng WANG Yan-rong and LU Li-peng |
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| Institution: | School of Jet Propulsion;Beijing University of Aeronautics and Astronautics;Beijing 100191;China |
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| Abstract: | An analysis model of crack growth was established by means of boundary element method(BEM),which was used to simulate the crack growth behavior of a powder metallurgy(PM) superalloy,FGH95.The calculation results show that,the predicted life of crack propagation is in good agreement with the experimental data,and the model is veracious and feasible.Then the model was developed to analyze the damage tolerance characteristic of PM turbine disk containing defects,and the predicted crack propagation life was als... |
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| Keywords: | powder metallurgy superalloy damage tolerance crack growth boundary element method |
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