Abstract
The reliability of boom crane structure determines the safety and performance of the whole machine. Due to the sample information of uncertain parameter is lacking, non-probabilistic reliability of boom crane structure under the condition of limited samples is studied. Considering the time dependent deterioration of structure resistance and the load time effect, the time-dependent uncertain parameters of boom structures are comprehensively analyzed. A time-dependent reliability model of boom structures based on interval non-probabilistic is proposed. Based on the theory of interval non-probabilistic time-varying reliability, an engineering example is analyzed by using VC++ programming. The influence of different weight and uncertain parameters on the structure reliability of the boom is analyzed. The results show that the resistance, attenuation coefficient, average resistance and non-probabilistic time-varying reliability indicators of the boom structure attenuate seriously after decades. The conclusion verifies the scientific of the proposed method on the time accumulation effect.
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Acknowledgments
This work was sponsored by the Fund for National Natural Science Foundation of China (51805348), sponsored by the Fund for Shanxi “1331 Project” Key Subjects Construction.
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Yang Ruigang received the B.S. degree in Mechanical Engineering from Taiyuan University of Technology, in 1998 and the Ph.D. degree in Mechanical Engineering from Taiyuan University of Technology, in 2009. He is a Professor of Taiyuan University of Science and Technology of China. He has published more than 50 journal articles and conference papers.
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Ruigang, Y., Wenzhao, L., Guangli, Z. et al. Interval non-probabilistic time-dependent reliability analysis of boom crane structures. J Mech Sci Technol 35, 535–544 (2021). https://doi.org/10.1007/s12206-021-0112-4
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DOI: https://doi.org/10.1007/s12206-021-0112-4