吊挂随机振动疲劳影响因素分析

罗杨阳; 倪樵; 陈铎民; 张翼

doi:10.13433/j.cnki.1003-8728.2016.0601

吊挂随机振动疲劳影响因素分析

doi: 10.13433/j.cnki.1003-8728.2016.0601

罗杨阳¹,
倪樵^1, ,,
陈铎民¹,
张翼²

1.
华中科技大学土木工程与力学学院, 武汉 430074;
2.
中国空空导弹研究院, 河南洛阳 471009

详细信息

作者简介:
罗杨阳(1987-),博士研究生,研究方向为结构随机振动及疲劳寿命,lucien1987@qq.com

通讯作者:
倪樵(联系人),教授,博士生导师,niqiao@hust.edu.cn

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- 文章访问数: 319
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- PDF下载量: 8
- 被引次数: 0
出版历程
- 收稿日期: 2014-06-06
- 刊出日期: 2016-06-05

Effect Factor Analysis of Random Vibration Fatigue of Missile Hanging

1.
College of Civil Engineering & Mechanics, Huazhong University of Science and Technology, Wuhan 430074, China;
2.
China Airborne Missile Academy, He'nan Luoyang 471009, China

摘要

摘要: 根据结构随机振动疲劳寿命的频域分析方法,采用有限元方法计算了某型导弹吊挂的随机振动疲劳寿命,同时研究了吊挂的结构参数对振动疲劳的影响。首先计算了结构的不规则系数;然后定量分析了不同结构参数对疲劳寿命的影响;最后为了研究平均应力对随机振动疲劳寿命的影响,采用Goodman准则推导了结构的平均应力修正系数。研究结果表明应力响应标准差是影响吊挂振动疲劳寿命的主要因素;材料参数和模态阻尼对吊挂的疲劳寿命有着较大的影响;平均应力对疲劳寿命的影响也不容忽视。
- 吊挂 /
- 随机振动疲劳 /
- 疲劳寿命影响因素 /
- 有限元分析
Abstract: In this paper, the fatigue damage of missile hanging under stochastic excitation is calculated with the finite element method, and the effect factors of the fatigue are also analyzed. First, the irregular factors and the root mean square (RMS) stress are calculated with the power spectral density method. Then the effects of the material parameters and modal damping of the structure are evaluated by random vibration analysis. At last, the mean stress correction coefficient is deduced with the Goodman method. The results show that the standard deviation of the stress responses is the principal factor that affects the fatigue life of missile hanging; material parameters and modal damping of the structure also influence the fatigue life to some extent; in addition, the effect of the mean stress cannot be ignored.
- effect factor analysis /
- fatigue damage /
- finite element method /
- missile hanging

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参考文献(15)

[1]	Crandall S H. Random vibration[M]. New York:The Technology Press of the Massachusetts, 1958
[2]	姚起杭,姚军.结构振动疲劳问题的特点与分析方法[J].机械科学与技术,2000,19(S):56-58 Yao Q H, Yao J. The behavior and analysis of structure vibration fatigue[J]. Mechanical Science and Technology, 2000,19(S):56-58(in Chinese)
[3]	姚起杭,姚军.工程结构的振动疲劳问题[J].应用力学学报,2006,23(1):12-15 Yao Q H, Yao J. Vibration fatigue in engineering structures[J]. Chinese Journal of Applied Mechanics, 2006,23(1):12-15(in Chinese)
[4]	王琳,倪樵,张强,等.随机激励下高压管道的疲劳寿命分析[J].华中科技大学学报(自然科学版),2003,31(12):100-102 Wang L, Ni Q, Zhang Q, et al. Estimation of fatigue life of pressure piping system under random excitations[J]. Journal of Huazhong University of Science And Technology (Nature Science Edition), 2003,31(12):100-102(in Chinese)
[5]	王明珠.结构振动疲劳寿命分析方法研究[D].南京:南京航空航天大学,2009 Wang M Z. Research on life analysis method for structure vibration fatigue[D]. Nanjing:Nanjing University of Aeronautics and Astronautics, 2009(in Chinese)
[6]	Valanis K C. On the effect of frequency on fatigue life[C]//The Winter Annual Meeting of the American Society of Mechanical Engineering. Washington D. C.:ASME, 1981:15-20
[7]	Whaley P W, Chen P S, Smith G M. Continuous measurement of material damping during fatigue tests[J]. Experimental Mechanics, 1984,24(4):342-348
[8]	Sanliturk K Y, Imregun M. Fatigue life prediction using frequency response functions[J]. Journal of Vibration and Acoustics, 1992,114(7):381-386
[9]	Aykan M. Vibration fatigue analysis and multi-axial effect in testing of aerospace structures[J]. Mechanical Systems and Signal Processing, 2009,23(3):897-907
[10]	欧进萍,王光远.结构随机振动[M].北京:高等教育出版社,1998 Ou J P, Wang G Y. Random vibration of structures[M]. Beijing:Higher Education Press, 1998(in Chinese)
[11]	Bendat J S, Piersol A G. Measurement and analysis of random data[M]. New York:John Wiley, 1966
[12]	张翼,杨晨,罗杨阳.随机振动载荷下导弹吊挂疲劳寿命分析[J].机械科学与技术,2013,32(11):1675-1679 Zhang Y, Yang C, Luo Y Y. Fatigue life analysis of missile hanging in random vibration load[J]. Mechanical Science and Technology for Aerospace Engineering, 2013,32(11):1675-1679(in Chinese)
[13]	范蜀晋,戴涛.18Ni马氏体时效钢的性能和用途[J].国外金属热处理,1995,16(3):41-47 Fan S J, Dai T. The properties and uses of 18Ni maraging steel[J]. Heat Treatment Technology and Equipment, 1995,16(3):41-47(in Chinese)
[14]	陈传尧.疲劳与断裂[M].武汉:华中科技大学出版社,2002 Chen C Y. Fatigue and fracture[M]. Wuhan:Huazhong University of Science and Technology Press, 2002(in Chinese)
[15]	姚卫星.结构疲劳寿命分析[M].北京:国防工业出版社,2004 Yao W X. Fatigue life prediction of structures[M]. Beijing:National Defense Industry Press, 2004(in Chinese)