Fatigue reliability analysis of the brake pads considering strength degradation

Abstract

Reliability prediction of the brake pads is indispensable to guarantee their safety. In the paper, the fatigue reliability of brake pads is analyzed by dynamic stress-strength interference (SSI) model considering strength degradation. Firstly, reliability model of the brake pads was established based on stress-strength interference model considering the influence of impact load. Then reliability of the brake pads was predicted under different impact load frequency and initial strength. Finally, the influence of random degradation strength on reliability was studied by contrast. The analysis results show that random strength degradation, impact load and initial strength have great influence on reliability prediction for the brake pads. Therefore, the reliability prediction of the brake pads fatigue strength considering strength degradation is more in line with the actual situation and the calculation accuracy is higher.

Strain-based running-reliability characterisation in time-domain for risk monitoring under various load conditions

“…In the automotive industry, fatigue reliability assessment is important as it is related to fatigue life data assessment under random load condition for failure prediction of components or structures [1]. For example, the leaf spring is an important component that experiences random loads in terms of compression-tension based on its operating conditions [2].…”

Study on reliability of emergency braking performance of high-speed and heavy-load monorail crane

“…Regarding the issue of vibration failure in brakes, Zhang et al [32] conducted reliability analysis of brake shoes considering random strength degradation, and the reliability of brake shoes was predicted for different impact load frequencies and initial strengths. Yang et al obtained sample data between drum brake design parameters and natural frequencies by DoE method [30],…”