基于附加虚拟质量的储罐损伤识别方法

PDF(1913 KB)

振动与冲击 ›› 2018, Vol. 37 ›› Issue (13) : 7-13.

论文

基于附加虚拟质量的储罐损伤识别方法

侯吉林1,2，景天雨1，王鹏飞1，张青霞3，Lukasz Jankowski4

作者信息 +

Damage identification method for storage tanks based on additional virtual masses

HOU Jilin 1,2 JING Tianyu 1 WANG Pengfei 1 ZHANG Qingxia 3 JANKOWSKI ?ukasz 4

Author information +

文章历史 +

摘要

针对储罐的具有空间对称、低阶模态密集且对局部损伤不敏感的特点，提出附加虚拟质量的损伤识别方法。首先结合储罐结构模态的灵敏度分析，确定附加质量的大小；接着基于虚拟变形法（VDM）的基本思想，利用在原储罐结构的激励时程和对应位置的加速度响应时程，构造附加质量后的频率响应并识别其频率；然后利用储罐结构空间对称特点，根据附加虚拟质量后的频率的分布规律初步判断损伤的位置；进一步，结合有限元模型的灵敏度方法进行迭代求解识别损伤的程度；最后利用储罐有限元模型进行数值模拟，可以准确的识别出损伤位置和程度，验证方法的有效性。

Abstract

A damage identification method based on additional virtual masses was proposed aiming at storage tanks’ features of space-symmetry, dense lower-order modes and being insensitive to local damages. Firstly, magnitudes of additional masses were determined through sensitivity analysis of storage tanks’ structural modes. Then based on the virtual deflection method (VDM), the tanks’ frequency responses after attaching additional virtual masses were constructed and their natural frequencies were identified with the original structures’ excitation time histories and the original structures’ corresponding positions’ acceleration response time histories. Furthermore, using the tanks’ features of space-symmetry, their damage positions were preliminarily determined according to the distribution law of their natural frequencies after attaching virtual masses. The sensitivity analysis of the tanks’ finite element model was used to solve iteratively damages’ level. Finally, the tanks’ finite element models were used to perform numerical simulations and correctly predict their damage locations and levels. The effectiveness of this proposed method was verified.

导出引用

侯吉林1,2，景天雨1，王鹏飞1，张青霞3，Lukasz Jankowski4. 基于附加虚拟质量的储罐损伤识别方法[J]. 振动与冲击, 2018, 37(13): 7-13

HOU Jilin 1,2 JING Tianyu 1 WANG Pengfei 1 ZHANG Qingxia 3 JANKOWSKI ?ukasz 4. Damage identification method for storage tanks based on additional virtual masses[J]. Journal of Vibration and Shock, 2018, 37(13): 7-13

参考文献

[1] 杨子健, 李威. 中国石油储备体系的发展现状与建议[J].技术经济与管理研究,2013,23(9):69-77.(Yang Zijian, Li Wei,Development Situation and Needs of China’s Petroleum Reserve System[J]. Research Institute of National Reserve Bureau, 2013,23(9):69-77)
[2] 王伟魁,曾周末,孙立瑛,等.基于相关分析的声发射储罐罐底检测降噪方法[J].振动与冲击,2010,29(8):178-180.(Wang Weikui, Zheng Zhoumo, Sun Liying, etal.Denoisingmethodforacousticemissiontestingoftankbottom basedoncross-correlationanalysis[J] Journal of Vibration and Shock,2010,29(8):178-180)
[3] 高廷岩,于永亮,韩天宇,等.漏磁检测技术在大型常压储罐中的应用[J].石油化工设备,2014,43(4):82-85.(Gao Tingyan, Yu Yongliang, Han Tianyu, etal. Application of magnetic flux leakage method on atmosphere tank[J]. Petro-chemicalequipment,2014,43(4):82-85.
[4] 刘屯,徐彦霖,王增勇.涡流检测技术及进展[J].兵工自动化,2006(3):23-27.( Liu Bao, XuYanlin, Wang Zengyong,etal.Eddy current testing technique and development[J].Measurement and Control Technique,2006(3):23-27)
[5] DoeblingSW, FarrarCR, PrimeMB,etal.Damageidentificationandhealthmonitoringofstructuralandmechanicalsystemsfromchangesintheirvibrationcharacteristics:aliteraturereview.LosAlamosNationalLaboratoryReportLA-13070-MS,1996.
[6] 孙晓丹，欧进萍.基于动力检测的损伤指标评价方法[J]. 振动与冲击, 2009. 28(1): 9-13.(Sun Xiaodan,Ou Jinping.Assessment of Vibration -based Damage Indexes Instructural Health Monitoring[J]. Journal of Vibration and Shock, 2009. 28(1): 9-13)
[7] 杨秋伟.基于振动的结构损伤识别方法研究进展[J]. 振动与冲击, 2007, 26(10):86-91（YangQiuwei, A Review of Vibration-based Structural Damage Identification Methods[J]. Journal of Vibration and Shock,2007, 26(10):86-91）
[8] 许成祥, 徐登红, 陈松. 基于试验模态分析的原油储罐损伤识别研究[J].防灾减灾工程学报, 2008,28(01): 31-36（XuChengxiang, Xu Denghong, Chen Song. Research on Damage Identification of the Crude Oil StorageTank Based on Experimental Modal Analysis[J]. Journal of Disaster Prevent ion and Mitigation Engineering, 2008,28(01): 31-36）
[9] 楚孝田.基于模态分析的大型油罐损伤检测[J].石油化工腐蚀与防护, 2009, 26(2): 50-51（Chu Xiaotian, Modal-based Defect Examination of Large Oil Tanks[J]. Corrosion & Protection in Petrochemical Industry,2009, 26(2): 50-51）
[10] 杨秋伟, 刘济科. 结构损伤识别的附加质量方法[J]. 工程力学, 2009, 26(05): 159-163.（Yang Qiuwei, Liu Jike. Structural damage identification by adding given masses[J]. Engineering Mechanics. 2009, 26(05): 159-163）
[11] 杨智春, 王乐, 丁燕, 等. 基于附加已知刚度的动力学模型修正方法[J]. 工程力学, 2009,26(05): 19-24.（Yang Zhichun, Wang Le, Ding Yan,et al. A direct model updating method using added known stiffness[J].Engineering Mechanics. 2009,26(05): 19-24）
[12] 周卫东,杨秋伟,赵卫. 基于广义柔度和附加质量的结构损伤识别方法研究 [J]. 机械强度,2016, 38(1): 156-159.( Zhou Weidong, Yang Qiuwei,Zhao Weidong.Structural Damage Identification with Generalized Flexibility and Added Masses[J]. Journal of Mechanical Strength, 2016, 38(1): 156-159)
[13] J. Holnicki-Szulc. (ed.) Smart Technologies for Safety Engineering. John Wiley & Sons Ltd, Chichester, 2008.
[14] G. Suwala, L. Jankowski. A Model-free Method for Identification of Mass Modifications. Journal of Structural Control & Health Monitoring. 2010.
[15] 张青霞, 段忠东, L. Jankowski, 基于虚拟变形法的移动质量识别方法研究. 振动工程学报, 2010.23(5):494-501.(ZhangQingxia,DuanZhongdong, Lukasz Jankowski. Moving Mass Identification Based on Virtual Distortion Method[J]. Journal of Vibration Engineering,2010. 23(5):494-501)
[16] J. L. Hou, L. Jankowski, J. P. Ou. Structural damage identification by adding virtual masses [J]. Structural and Multidisciplinary Optimization. 2013, 48:59-72.
[17] P. Kolakowski, M. Wiklo, J. Holnicki-Szulc. The virtual Distortion Method-a versatile reanalysis tool for structure and systems[J]. Structural and Multidisciplinary Optimization，2008, 36(3) 217~234.
[18] J. Hou, Ł. Jankowski, J. Ou. Structural damage identification by adding virtual masses[J]. Struct Multidisc Optim，2013, 48:59~72.