基于层次分析的直梁型柔性铰链的损伤识别
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摘要
针对直梁型柔性铰链损伤位置和损伤程度难以识别的复杂工程难题,提出了一种基于层次分析的直梁型柔性铰链损伤识别的新方法。该方法首先利用ANSYS Workbench对直梁型柔性铰链进行有限元分析,获得应力云图,找出损伤位置;然后用层次分析法进行建模,利用损伤因素对损伤位置的影响模拟出损伤向量。实例表明:该方法能对铰链进行定量损伤识别,准确度达到90%以上,对一些设备维护具有一定的工程指导意义。
Aiming at the complicated engineering problems of the straight beam type flexible hinges damage position and the degree of damage,a new method of damage identification of straight beam type flexible hinge based on AHP was proposed. ANSYS Workbench was used to conduct finite element analysis of straight beam type flexible hinge,and the stress cloud figure was obtained,so the location of the damage was found.Then AHP was used to modeling.The damage vector was simulated by the influence of damage factors on the damage location. The example shows that this method can quantitatively identify the hinge damage,and the accuracy is more than 90%. For some equipment maintenance,the method has a certain engineering guiding significance.
Aiming at the complicated engineering problems of the straight beam type flexible hinges damage position and the degree of damage,a new method of damage identification of straight beam type flexible hinge based on AHP was proposed. ANSYS Workbench was used to conduct finite element analysis of straight beam type flexible hinge,and the stress cloud figure was obtained,so the location of the damage was found.Then AHP was used to modeling.The damage vector was simulated by the influence of damage factors on the damage location. The example shows that this method can quantitatively identify the hinge damage,and the accuracy is more than 90%. For some equipment maintenance,the method has a certain engineering guiding significance.
引文
[1] HOWELL L L.Compliant Mechanisms[M].New York:Wiley Interscience,2001.
[2] 史治宇.基于动态实验数据的结构破损诊断研究[D].南京:南京航空航天大学,1996.
[3] 史治宇,罗绍湘.结构破损定位的单元模态应变能变化率法[J].振动工程学报,1998(3):356-360.SHI Z Y,LUO S X.Determination of Structural Damage Location Based on Elemental Modal Strain Energy Change[J].Journal of Vibration Engineering,1998(3):356-360.
[4] 罗潇斌,张杨.基于ANSYS优化分析的导管架损伤识别[J].北京化工大学学报(自然科学版),2013, 40(4):109-113.LUO X B,ZHANG Y.Jacket Damage Identification Based on ANSYS Optimization Analysis[J].Journal of Beijing University of Chemical Technology(Natural Science),2013,40(4):109-113.
[5] PANDEY A K,BISWAS M.Experimental Verification of Flexibility Difference Method for Locating Damage in Structure[J].Journal of Sound and Vibration,1995,184(2):311-328.
[6] PANDEY A K,BISWAS M.Damage Diagnosis of Truss Structures by Estimation of Flexibility Change[J].The International Journal of Analytical and Experimental Modal Analysis,1995,10(2):104-107.
[7] 钟儒勉,宗周红,秦中远,等.基于多尺度模型修正的结合梁斜拉桥损伤识别方法[J].东南大学学报(自然科学),2014(2):350-356.ZHONG R M,ZONG Z H,QIN Z Y,et al.Damage Identification Method of Cable-Stayed Bridge Based on Multi-Scale Model Updating[J].Journal of South-east University,2014(2):350-356.
[8] GAUTIER G,MENCIK J M,SERRA R.A Finite Element-based Subspace Fitting Approach for Structure Identification and Damage Localization[J].Mechanical Systems & Signal Processing,2015,58/59:143-159.
[9] 伍建军,万良琪,吴佳伟,等.考虑随机设计变量情形下的柔性铰链疲劳可靠性分析[J].现代制造工程,2015(8):11-14.WU J J,WAN L Q,WU J W,et al.Consider Random Design Variables Case of Flexible Hinge Fatigue Reliability Analysis[J].Modern Manufacturing Engineering,2015(8):11-14.
[10] 郭金玉,张忠彬,孙庆云.层次分析法的研究与应用[J].中国安全科学学报,2008,18(5):148-153.GUO J Y,ZHANG Z B,SUN Q Y.Study and Applications of Analytic Hierarchy Process[J].China Safety Science Journal,2008,18(5):148- 153.
[11] 秦吉,张翼鹏.现代统计信息分析技术在安全工程方面的应用-层次分析原理[J].工业安全与防尘,1999(5):44-48.QI J,ZHANG Y P.Application of Cortemporary Statistical Information Analysis Method in Safety Engincering-the Principle of AHP[J].Industrial Safety and Dust Control,1999(5):44-48.
[12] 邓雪,李家铭,曾浩健,等.层次分析法权重计算方法分析及其应用研究[J].数学的实践与认识,2012,42(7):93-100.DENG X,LI J M,ZENG H J,et al.Reasearch on Computation Methods of AHP Weight Vector and Its Applications[J].Mathematics in Pratice and Theory,2012,42(7):93-100.
[13] 杜文婷.典型柔性铰链和柔顺机构疲劳性能及损伤识别研究[D].广州:华南理工大学,2011:51-89.
[14] 董美香.卫星光通信中快速偏转镜工作寿命特性研究[D].哈尔滨:哈尔滨工业大学,2016.
[2] 史治宇.基于动态实验数据的结构破损诊断研究[D].南京:南京航空航天大学,1996.
[3] 史治宇,罗绍湘.结构破损定位的单元模态应变能变化率法[J].振动工程学报,1998(3):356-360.SHI Z Y,LUO S X.Determination of Structural Damage Location Based on Elemental Modal Strain Energy Change[J].Journal of Vibration Engineering,1998(3):356-360.
[4] 罗潇斌,张杨.基于ANSYS优化分析的导管架损伤识别[J].北京化工大学学报(自然科学版),2013, 40(4):109-113.LUO X B,ZHANG Y.Jacket Damage Identification Based on ANSYS Optimization Analysis[J].Journal of Beijing University of Chemical Technology(Natural Science),2013,40(4):109-113.
[5] PANDEY A K,BISWAS M.Experimental Verification of Flexibility Difference Method for Locating Damage in Structure[J].Journal of Sound and Vibration,1995,184(2):311-328.
[6] PANDEY A K,BISWAS M.Damage Diagnosis of Truss Structures by Estimation of Flexibility Change[J].The International Journal of Analytical and Experimental Modal Analysis,1995,10(2):104-107.
[7] 钟儒勉,宗周红,秦中远,等.基于多尺度模型修正的结合梁斜拉桥损伤识别方法[J].东南大学学报(自然科学),2014(2):350-356.ZHONG R M,ZONG Z H,QIN Z Y,et al.Damage Identification Method of Cable-Stayed Bridge Based on Multi-Scale Model Updating[J].Journal of South-east University,2014(2):350-356.
[8] GAUTIER G,MENCIK J M,SERRA R.A Finite Element-based Subspace Fitting Approach for Structure Identification and Damage Localization[J].Mechanical Systems & Signal Processing,2015,58/59:143-159.
[9] 伍建军,万良琪,吴佳伟,等.考虑随机设计变量情形下的柔性铰链疲劳可靠性分析[J].现代制造工程,2015(8):11-14.WU J J,WAN L Q,WU J W,et al.Consider Random Design Variables Case of Flexible Hinge Fatigue Reliability Analysis[J].Modern Manufacturing Engineering,2015(8):11-14.
[10] 郭金玉,张忠彬,孙庆云.层次分析法的研究与应用[J].中国安全科学学报,2008,18(5):148-153.GUO J Y,ZHANG Z B,SUN Q Y.Study and Applications of Analytic Hierarchy Process[J].China Safety Science Journal,2008,18(5):148- 153.
[11] 秦吉,张翼鹏.现代统计信息分析技术在安全工程方面的应用-层次分析原理[J].工业安全与防尘,1999(5):44-48.QI J,ZHANG Y P.Application of Cortemporary Statistical Information Analysis Method in Safety Engincering-the Principle of AHP[J].Industrial Safety and Dust Control,1999(5):44-48.
[12] 邓雪,李家铭,曾浩健,等.层次分析法权重计算方法分析及其应用研究[J].数学的实践与认识,2012,42(7):93-100.DENG X,LI J M,ZENG H J,et al.Reasearch on Computation Methods of AHP Weight Vector and Its Applications[J].Mathematics in Pratice and Theory,2012,42(7):93-100.
[13] 杜文婷.典型柔性铰链和柔顺机构疲劳性能及损伤识别研究[D].广州:华南理工大学,2011:51-89.
[14] 董美香.卫星光通信中快速偏转镜工作寿命特性研究[D].哈尔滨:哈尔滨工业大学,2016.