A method to predict fatigue performances of rubber isolator based on the cracking energy density and the fatigue crack growth characteristic of rubber material

作者：Wang, Xiao-Li; Shangguan, Wen-Bin; Zeng, Xiang-Kun; Duan, Xiao-Cheng; Yan, Jiao

来源：Journal of Vibration and Shock, 2016, 35(6): 70-74.

DOI：10.13465/j.cnki.jvs.2016.06.012

• Crack orientations
• Energy density
• Failure locations
• Fatigue experiments
• Fatigue performance
• Rubber isolators
• Scattering factors
• Tearing energy

A method for predicting rubber isolators'fatigue performances including fatigue life, failure location and crack orientation was proposed. The cracking energy density and the fatigue crack growth characteristic of the studied rubber material were used in the proposed method. A typical type of rubber isolator was taken as an application subject so as to validate the proposed formula. The comparisons of the calculated and the measured results (fatigue life, failure location and crack orientation) reveal an acceptable consistence between them. Especially, the predicted fatigue life falls within a scattering factor of 1/2 of the experimental life, which is acceptable in engineering. The proposed method for predicting fatigue performances, which needs fatigue crack growth experiment instead of the traditional fatigue experiment that costs a lot of rubber materials, can give a direct guideline for fatigue-proof design of rubber isolators.

• 出版日期2016-3-28
• 单位华南理工大学