Distribution characteristic of durability load accumulation based on changeable task frequency mixing
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摘要: 在基于固定任务混频的寿命相关载荷累积量分布特性研究成果的基础上,推导了变任务混频条件下的寿命相关载荷累积量分布特性,结果表明:变任务混频的载荷参数累加量分布函数也是趋于正态分布.并采用数值方法模拟实际飞行过程中变任务混频条件下寿命相关载荷的累积过程,模拟结果和理论结果吻合良好,进一步验证了分析结果的正确性.该结果可用于变任务混频下的寿命可靠性预测.Abstract: Based on results of distribution characteristic of durability load accumulation of fixed task frequency mixing, distribution characteristic of durability load accumulation based on changeable task frequency mixing was deduced. Results show that distribution function of durability load accumalation of changeable task frequency mixing tends to be normal as well. The process of durability load accumulation with changeable task frequency mixing in real flying operation was demonstrated by numerical simulation, and the numerical results coincide with the theoretical results, which further demonstrates the analyzed results. Results can be used in life reliability forecasting based on changeable task frequency mixing.
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Key words:
- aero-engine /
- structural life /
- load distribution function /
- task frequency mixing /
- reliability
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[1] 陆山,吕文林.轮盘低循环疲劳寿命可靠性分析新方法[J].航空学报,1997,18(2):135-138. LU Shan,LV Wenlin.New method for reliability analisis of disk's LCF life[J].Acta Aeronautica et Astronautica Sinica,1997,18(2):135-138.(in Chinese) [2] 杨剑秋,陆山.中长寿命轮盘应力寿命及可靠性分析方法[J].航空动力学报,2007,22(6):991-995. YANG Jianqiu,LU Shan.Methods for stress based life and its reliability analyses of disk[J].Journal of Aerospace Power,2007,22(6):991-995.(in Chinese) [3] 马双员,陆山,同应力多危险部位失效相关轮盘疲劳寿命可靠性分析方法[J].航空动力学报,2008,23(11):2016-2020. MA Shuangyuan,LU Shan.Analysis method for the strain fatigue life reliability of a disk concerning failure correlation of multi critical sites in the same stress level[J].Journal of Aerospace Power,2008,23(11):2016-2020.(in Chinese) [4] 高阳,白广忱,张瑛莉.涡轮盘多轴低循环疲劳寿命可靠性分析[J].航空学报,2009,30(9):1678-1682. GAO Yang,BAI Guangchen,ZHANG Yingli.Reliability analysis of multiaxial low cycle fatigue life for turbine disk[J].Acta Aeronautica et Astronautica Sinica,2009,30(9):1678-1682.(in Chinese) [5] 郭秩维,白广忱.随机响应面法在结构随机响应计算中的应用[J].航空动力学报,2008,23(11):2021-2025. GUO Zhiwen,BAI Guangchen.Application of stochastic response surface method in the structural stochastic response[J].Journal of Aerospace Power,2008,23(11):2021-2025.(in Chinese) [6] 杨自春,申文才,彭茂林.随机环境下涡轮盘-片剩余寿命预测方法[J].航空动力学报,2009,24(8):1677-1683. YANG Zichun,SHEN Wencai,PENG Maolin.Research on residual life prediction of turbine blade-disc under radon environment[J].Journal of Aerospace Power,2009,24(8):1677-1683.(in Chinese) [7] 高阳,白广忱,张瑛莉.涡轮盘低循环疲劳寿命的概率分析[J].航空动力学报,2009,24(4):804-809. GAO Yang,BAI Guangchen,ZHANG Yingli.Probability analysis for the low cycle fatigue life of a turbine disk[J].Journal of Aerospace Power,2009,24(4):804-809.(in Chinese) [8] 唐俊星,陆山.某涡轮盘低循环疲劳概率寿命数值模拟[J].航空动力学报,2006,21(4):706-710. TANG Junxing,LU Shan.Numerical simulation of LCF probability life of a turbine disk[J].Journal of Aerospace Power,2006,21(4):706-710.(in Chinese) [9] 龚梦贤,古远兴,王旅生.某型发动机I级涡轮盘的技术寿命[J].燃气涡轮试验与研究,2000,13(4):22-26. GONG Mengxian,GU Yuanxing,WANG Lüsheng.Service life of an areoengine’1st stage turbine disk[J].Gas Turbine Experiment and Research,2000,13(4):22-26.(in Chinese) [10] 王通北,陈英美.军用航空发动机的可靠性和寿命[J].航空发动机,1994(1):36-47. [11] 徐可君,江龙平.军用航空发动机可靠性和寿命管理[J].中国工程科学,2003,5(1):82-88. XU Kejun,JIANG Longping.Reliability and life management on aeroengine used in army[J].Engineering Science,2003,5(1):82-88.(in Chinese) [12] 李琼,李艳军,赵文涛.航空发动机可靠性研究及提高途径的探讨[J].飞机设计,2011,31(1):36-40. LI Qiong,LI Yanjun,ZHAO Wentao.Research on aero-engine reliability and the improving methods[J].Aircraft Design,2011,31(1):36-40.(in Chinese) [13] 孔瑞莲.航空发动机可靠性工程[M].北京:航空工业出版社,1996. [14] 苏清友.航空涡喷涡扇发动机主要零部件定寿指南[M].北京:航空工业出版社,2004. [15] 王云.航空发动机原理[M].北京:北京航空航天大学出版社,2009. [16] 赵福星,吕玉泽,郑小梅,等.基于固定任务混频的寿命相关载荷分布特性[J].航空动力学报,2013,28(1):32-37. ZHAO Fuxing,LV Yuze,ZHENG Xiaomei,et al.Distribution characteristic of durability load based on fixed task frequency mixing[J].Journal of Aerospace Power,2013,28(1):32-37.(in Chinese) [17] 盛骤,谢式千,潘承毅.概率论与数理统计[M].北京:高等教育出版社,2001. [18] 李惕碚.实验的数据处理[M].北京:科学出版社,1981.
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