裂纹智能梁的三维有限元动力谐响应分析
PDF下载 (640)王 炜,严 蔚,李万春.裂纹智能梁的三维有限元动力谐响应分析[J].宁波大学学报(理工版),2012,25(04):88-92.DOI:
WANG Wei,YAN Wei,LI Wan-chun.Three-dimensional Finite Element Harmonic Response of a Cracked Smart Beam[J].Journal of Ningbo University(Natural Science & Engineering Edition),2012,25(04):88-92.DOI:
| Title: | Three-dimensional Finite Element Harmonic Response of a Cracked Smart Beam |
| 作者: | 王 炜, 严 蔚, 李万春 |
| Author(s): | WANG Wei, YAN Wei, LI Wan-chun |
| 关键词: | 压电阻抗; 结构健康监测; 有限元模型; 含裂纹梁 |
| Keywords: | EMI; structural health monitoring; finite element model; cracked beam |
| 分类号: | TU323.3 |
| 文献标识码: | A |
| 摘要: | 采用面向结构健康监测应用的压电阻抗模型, 对粘贴有压电片的含裂纹梁结构采用三维有限元技术进行了高频压电阻抗谐响应分析. 利用通用有限元软件ANSYS, 建立由压电片-粘结层-含裂纹主体梁结构组成的耦合系统的三维有限元模型. 并通过算例与振型叠加法和实验得到的结果进行了对比研究, 验证了该模型的有效性和准确性. 此外, 还考察了有限元单元尺寸、振动模态、裂纹深度以及粘结层厚度对压电阻抗信号的影响. |
| Abstract: | An electro-mechanical impedance (EMI) model is presented in this paper for structural health monitoring purposes. The high-frequency EMI harmonic response of a cracked beam with surface bonded piezoelectric patches is investigated by employing the three-dimensional finite element method (FEM). The three-dimensional FEM model of the coupled structural system consisting of PZT patches, bonding layer and cracked beam is established using the commercial software ANSYS. A comparison study with the mode superposition method and experimental results is adopted to validate the effectivity and accuracy of the proposed EMI model. Furthermore, the effects of finite element size, dynamic modes, crack depths and the thickness of bonding layer on EMI signatures in the high frequency range are also discussed. |
| 参考文献 /References: | [1] Park G, Inman D J. Structural health monitoring using piezoelectric impedance measurements[J]. Philosophical Transactions of the Royal Society, 2007, 365:373-392. [2] 王丹生, 朱宏平. 基于波传播和阻抗特性的裂纹梁损伤识别[J]. 振动、测试与诊断, 2005, 25(3):186-189. [3] Giurgiutiu V, Zagrai A N. Embedded self-sensing piezo- electric active sensors for on-line structural identification [J]. Journal of Vibration and Acoustics, 2002, 124:116-125. [4] Tseng K K, Wang L S. Impedance-based method for nondestructive damage identification[J]. Journal of Engi- neering Mechanics, 2005, 131(1):58-64. [5] Giurgiutiu V. Tuned lamb wave excitation and detection with piezoelectric wafer active sensors for structural health monitoring[J]. Journal of Intelligent Material Systems and Structures, 2005, 16:291-305. [6] 严蔚, 袁丽莉. 回传射线矩阵法含裂纹框架的电阻抗模型[J]. 振动、测试与诊断, 2011, 31(2): 212-216. [7] 蔡金标, 陈勇, 严蔚. 基于三维有限元分析的压电阻抗模型及其应用[J], 浙江大学学报: 工学版, 2010, 44(12): 2342-2347. [8] Yang Y W, Lim Y Y, Soh C K. Practical issues related to the application of the electromechanical impedance technique in the structural health monitoring of civil structures: II. Numerical verification[J]. Smart Materials and Structures, 2008, 17(3):1-12. [9] Annamdas V G M, Soh C K. Three-dimensional electro- mechanical impedance model for multiple piezoceramic transducers-structure interaction[J]. Journal of Aerospace Engineering, 2008, 21(1):35-41 [10] Yan W, Li W C, Yuan L L. Effects of ambient conditions on the impedance-based health monitoring technique[C]. 2011 Second International Conference on Mechanic Automation and Control Engineering, Inner Mongolia, China, 2011:2120-2123. [11] Yan W, Chen W Q, Cai J B, et al. Quantitative structural damage detection using high frequency piezoelectric signa- tures via the reverberation matrix method[J]. International Journal for Numerical Methods in Engineering, 2007, 71: 505-528. |
| 备注/Memo: | 收稿日期: 2012-06-07. 基金项目: 浙江省自然科学基金（LY12E08005）; 浙江省重点科技创新团队项目（2011R09025-03）. 第一作者: 王 炜（1985－）, 男, 浙江上虞人, 在读硕士研究生, 主要研究方向: 结构健康监测. E-mail: 52402082@qq.com *通讯作者: 严 蔚（1968－）, 男, 浙江宁波人, 博士/副教授, 主要研究方向: 结构健康监测. E-mail: yanwei@nbu.edu.cn 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
