Dynamic Fuzzy Reliability Analysis of Mechanical Components with Small Samples of Load

Abstract:

Dynamic fuzzy reliability models of mechanical components are proposed in this paper in the case of small samples of load. The proposed models are established based on the distribution of load obtained from a load history, which reflects the relationship among the occurrence frequency of loads with different magnitude in a given time period, rather than the distribution at each load application. To deal with the uncertainty of the distribution of load from a load history due to the randomness of the magnitude of load at each load application, the statistical parameters involved in the distribution of load are modeled as fuzzy variables. Explosive bolts are chosen as representative examples to illustrate the proposed models. The results show that reliability increases with the increase in the level of cut set. Besides, the dispersion of strength has great influences on the reliability and failure rate of mechanical components.

• Periodical: Advanced Materials Research (Volume 819)
• Pages: 281-285
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.819.281
• Online since: September 2013
• Authors: Peng Gao, Shao Ze Yan, Jia Ning Wu, Tian Fu Yang
• Keywords: Dynamic Fuzzy Reliability, Failure Rate, Small Samples

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