Reliability analysis of the main drive system of a CNC machine tool including early failures

Li, He; Deng, Zhiming; Golilarz, Noorbakhsh Amiri; Soares, C. Guedes

doi:10.1016/j.ress.2021.107846

Cited by 40 publications

(24 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…BN is a graphical model for describing the relationship between variables, which consists of a directed acyclic graph and conditional probability tables 25,26 . The directed acyclic graph consists of nodes representing variables and directed edges connecting these nodes.…”

Section: Reliability Modeling Of Systems With Mixed Uncertainty Based...mentioning

confidence: 99%

Reliability analysis of systems with mixed uncertainties based on Bhattacharyya distance and Bayesian network

Jia

Sun

et al. 2022

Quality & Reliability Eng

View full text Add to dashboard Cite

The lack of data due to the high cost of experiments, limited knowledge of system structure, and coupling failure mechanism make it necessary to consider uncertainties when analyzing the reliability of complex systems. This paper provides a comprehensive work for system reliability analysis under consideration of mixed uncertainties. First, Bayesian networks (BNs) are used to model the structure of complex systems. Second, mixed uncertainties are described via a probability box and accurately quantified by the Bhattacharyya distance, which can synthetically represent the mean and variance of two data sets. Then, the importance of components with mixed uncertainties is defined and analyzed. Finally, a comprehensive sensitivity index is proposed for sensitivity analysis and epistemic uncertainty tracing of data sources based on the Bhattacharyya distance. This method is used to analyze the reliability of an auxiliary power supply system of a train and verifies the feasibility and accuracy of the proposed method.

show abstract

Section: Reliability Modeling Of Systems With Mixed Uncertainty Based...mentioning

confidence: 99%

Reliability analysis of systems with mixed uncertainties based on Bhattacharyya distance and Bayesian network

Jia

Sun

et al. 2022

Quality & Reliability Eng

View full text Add to dashboard Cite

show abstract

“…The uncertainties in weld geometry are the main concern of the present study. Statistics provide powerful tools for the explanations of experimental data [32][33][34][35][36] such as Statistical descriptors of geometric parameters were offered in many studies based on experimental measurement, and a review of the data from different sources was conducted by Schork et al 32 Jakubczak et al 37 performed experimental and statistical assessment of the weld toe radius and flank angle. The distributions fitted by the data from different units in the same factory show significant differences.…”

Section: Random Variablesmentioning

confidence: 99%

Fatigue reliability of welded joints accounting for uncertainties in weld geometry

Gao

Zhang

Huang

et al. 2022

Advances in Mechanical Engineering

View full text Add to dashboard Cite

Fatigue reliability assessment of welded joints can consider the uncertainties from various sources and can establish the design criteria and inspection plans. The present paper aims to address the uncertainties explicitly. The notch strain approach that accounts for the effects of the misalignment, local notch, and crack-like imperfection, which is referred to as secondary notch, is employed. Sensitivity analyses indicate that uncertainties in misalignment, flank angle, weld toe radius together with secondary notch are all important sources of the total uncertainty. The practical difficulty in the determination of the uncertainty models of the geometric parameters is discussed, and the acceptance limits for fabrication are used to derive the uncertainty models. And finally, the impacts of acceptance limits on the fatigue reliability of welded joints are assessed. The results indicate that the weld toe radius and secondary notch depth significantly affect the reliability index and the fatigue reliability increases with the weld quality of the welded joint becomes higher.

show abstract

“…The high-speed train gearbox has special working environment in comparison with gear transmission systems in machine tools, aviation, wind turbines, etc. [5][6][7][8]. The gear wheel is fixed on the wheelset axle directly through interference fit, and the gearbox housing is hinged with the wheelset axle through bearing; due to this installation method, the vibration of the wheelset will be transferred to the gearbox directly.…”

Section: Introductionmentioning

confidence: 99%

Vibration and Stress Response of High-Speed Train Gearboxes under Different Excitations

Zhu

Sun

2022

Applied Sciences

View full text Add to dashboard Cite

The vibration data of the gearbox on a high-speed train was measured, and the vibration characteristics were analyzed in this paper. The dynamic stress of the gearbox under the internal and external excitation was examined by a railway vehicle dynamic model with a flexible gearbox and a flexible wheelset. The ideal 20th polygonal wear was considered, and dynamic stresses of the gearbox under different polygonal wear amplitudes were calculated. The gear transmission model was established to study the dynamic stress of the gearbox under the influence of the time-varying stiffness of the gear meshing. Based on the rigid–flexible coupling model, and considering the influence of wheel polygonization, gear meshing time-varying stiffness, and wheelset elastic deformation, the dynamic stress of the gearbox was investigated with consideration of the measured polygonal wear and measured rail excitation. The results show that the dynamic stress of the gearbox is dominated by the wheel polygonization. Moreover, not only the wheel polygonization excites the resonance of the gearbox, but also the flexible deformation of the wheelset leads to the deformation of the gearbox, which also increases the dynamic stress of the gearbox. Within the resonant bandwidth of the frequency, the amplitude of the dynamic stresses in the gearbox will increase considerably compared with the normal case.

show abstract

Reliability analysis of the main drive system of a CNC machine tool including early failures

Cited by 40 publications

References 39 publications

Reliability analysis of systems with mixed uncertainties based on Bhattacharyya distance and Bayesian network

Reliability analysis of systems with mixed uncertainties based on Bhattacharyya distance and Bayesian network

Fatigue reliability of welded joints accounting for uncertainties in weld geometry

Vibration and Stress Response of High-Speed Train Gearboxes under Different Excitations

Contact Info

Product

Resources

About