A test method to simulate structural damage of a model based on a MR damper

作者：Lin You Xin^*; Jia Zi Guang; Ren Liang; Li Hong Nan; Cheng Ming Tao; Zhang Peng

来源：Journal of Vibration and Shock, 2014, 33(7): 147-152.

DOI：10.13465/j.cnki.jvs.2014.07.024

• Damage Identification
• Experimental methods
• Fourier transformations
• Joint time-frequency analysis
• Magneto-rheological dampers
• Stiffness reduction
• Structural damages
• Transmission tower

An experimental method to simulate stiffness reduction of a compressed member using a magneto-rheological (MR) damper was presented. The compressional stiffness of the member was adjusted by varying the current of the MR damper. In a transmission tower partial truss model dynamic test, instantaneous compressional stiffness reduction was simulated with this approach. The dynamic response of the model was processed with a joint time-frequency analysis, and then the damage time was figured out precisely. The result showed that this method is effective in model tests.

• 出版日期2014