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Reliability analysis of the roller base of a counter-roller spinning machine based on the maximum entropy method |
| ZHENG Hongwei1,2, MENG Guangwei1, LI Feng1, HUANG Tao2, GUO Yaming2, XUAN Mohan2 |
1. College of Mechanical and Aerospace Engineering, Jilin University, Changchun 130025, China;
2. Changchun Equipment Technology Research Institute, Changchun 130012, China |
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Abstract The maximum entropy method was used to develop a reliability analysis model for the roller base of a counter-roller spinning machine. The maximum entropy method was used to define the probability density expression for the performance function with the fourth-order central moments then computed using a Taylor series expansion and a finite element analysis. The fourth-order origin moments were then calculated by a standardized transformation. MATLAB was then used to solve the constrained expression for the moments to obtain the maximum entropy probability density function parameters. The parameters were fit to get the probability density curve with the failure probability of the structural function then found by integration. The error relative to a Monte Carlo simulation (MCS) was 1.61%, which shows that this method is accurate. The roller base was then optimized which reduced the failure probability after optimization by 11.42%.
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| Keywords
counter-roller spinning equipment
reliability analysis
maximum entropy method
Taylor expansion
probability density function
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Issue Date: 19 October 2021
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2021,
Vol. 61
