Non-probabilistic reliability analysis of water hydraulic piston pump based on interval-parameter
Traditional reliability model based on probability has been applied widely, but it requires overmuch and precise data to describe the probabilistic distribution of the parameter. In practice, there is often hot enough data to define the probability model precisely, especially for the design of water hydraulic pump. Considering that the design parameter could be identified as intervals in water hydraulic pump, a non-probabilistic reliability model based on interval parameter is introduced focusing on the fatigue strength of piston and valve plate. A new method of probabilistic measurement based on interval index has been proposed, and accordingly the ratio between the mean value of function and the interval width is defined as the reliability index to obtain the reliability degree of the hydraulic component. The developed non-probabilistic reliability model is applied to a design case of water hydraulic piston pump, and the reliability analysis is conducted. The research results exhibited the high reliability of the water hydraulic piston pump. The developed nonprobabilistic reliability model could mitigate the difficulty of obtaining the design data and decrease computation effort effectively.
Interval parameter analysis Non-probabilistic model Reliability Water hydraulic pump
Qian Liu Songlin Nie Zhiwei Hu Jun Ruan
College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technolo School of Mechanical Science and Engineering, Huazhong University of Science & Technology, Wuhan 430
国际会议
杭州
英文
554-557
2009-04-08（万方平台首次上网日期，不代表论文的发表时间）