Structural Damage Localization Based on Cloud Algorithm and Improved Modal Strain Energy Dissipation Ration Index

4th Annual International Workshop on Materials Science and Engineering

Guo, Huiyong^1 ; Zhou, Xinyu^1

School of Civil Engineering, Chongqing University, Chongqing

400045, China^1

关键词: Cloud generators;    Damage localization;    Detection problems;    Identification parameters;    Modal strain energy;    Structural damage localization;    Structural damages;    Structural modals;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/381/1/012095/pdf
DOI  :  10.1088/1757-899X/381/1/012095

来源: IOP

【 摘 要 】

In order to solve structural multi-damage detection problem, a damage localization method based on cloud algorithm and modal strain energy index is presented. First, structural modal strain energy is considered as identification parameter and an improved modal strain energy dissipation ration index (IMSEDRI) is presented to identify structural damage locations. Then, cloud algorithm is introduced and a backward cloud generator is proposed to process the noisy modal data. The simulation results demonstrate that the calculated results of the proposed index are better than those of the basic modal strain energy dissipation ration index, and the method based on cloud algorithm and IMSEDRI can analyze damage problem with random noise interference.