Fracture characteristics of asymmetric high contact ratio spur gear based on strain energy release rate

Namboothiri, Nandu V.; Marimuthu, P.

doi:10.1016/j.engfailanal.2022.106038

Cited by 8 publications

(2 citation statements)

References 29 publications

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“…Nandu studied the fracture property for gear system based on contact and energy release rate. The worn regulation and deformation of gear are both investigated [16]. Professor ZHU carried out extensive research and review on the plastic dynamic response of structures under repeated impact loads in three aspects: experimental, numerical and theoretical methods [29].…”

Section: Wear and Plastic Deformation Analysismentioning

confidence: 99%

Failure modeling and reliability analysis for motion mechanism with clearance joints under plastic deformation and wear

Liu¹,

Xue²,

Zhang³

et al. 2023

Eksploatacja i Niezawodność – Maintenance and Reliability

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The performance failure and reliability of motion mechanism has a significant effect on industry reliability, operation safety and production economy. Motion precise is one of the typical performance indicators especially for motion mechanism with multibody and joints. Size of joint clearance degenerates with usage such as wear and deformation. Repeated start-stop lead to impact stress and plastic deformation for clearance joint particularly for mechanism with high load and long working cycles. This study attempts to investigate the wear process and performance failure model of multibody mechanism with clearance joints considering plastic deformation and wear. Quantification of plastic deformation caused by repeated impact stress of joints is studied by formulation. Then, a novel wear process model is established, after which performance failure indicator is conducted. A linkage motion mechanism with multi revolution joints is studied to demonstrate proposed methods. This study provides valuable guidelines for degeneration prediction and reliability analysis of motion mechanism.

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Section: Wear and Plastic Deformation Analysismentioning

confidence: 99%

Failure modeling and reliability analysis for motion mechanism with clearance joints under plastic deformation and wear

Liu¹,

Xue²,

Zhang³

et al. 2023

Eksploatacja i Niezawodność – Maintenance and Reliability

View full text Add to dashboard Cite

show abstract

“…Nandu studied the fracture property of a gear system based on contact and energy release rate. The worn regulation and deformation of the gear were both investigated [16].…”

Section: Introductionmentioning

confidence: 99%

Competing Failure Modeling for Systems under Classified Random Shocks and Degradation

2023

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A new model is presented to analyze reliability for systems subjected to competing risks of a typical degradation process and external random shocks. The external random shocks may cause hard failure and instantaneous increases in the degradation process. Random shocks are classified into three types in the new model according to their sizes. Different types will lead to different instantaneous increases in the degradation process. Besides system reliability, the competing failure probabilities are also studied. Competing failure probability indicates the probability that one risk mode fails while the other risk mode does not fail. Competing failure probabilities are helpful in determining which risk mode is more likely to occur during a system’s lifetime. It is impractical if both risk modes fail together for systems under competing failure modes, while the system reliability and failure probabilities, which are simply calculated by expression, do not resolve this impractical situation. The modified values of system reliability and competing failure probability are calculated in this paper with the impractical situation excluded. The effectiveness of the presented model is demonstrated by the reliability analysis of the micro-electromechanical system (MEMS), which proved that the probabilities calculated using this method are more practical. In addition, sensitivity analysis is performed for specific parameters.

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Development and application of high strength gears

Wu,

Wei,

Zhu

et al. 2024

Int J Adv Manuf Technol

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Fracture characteristics of asymmetric high contact ratio spur gear based on strain energy release rate

Cited by 8 publications

References 29 publications

Failure modeling and reliability analysis for motion mechanism with clearance joints under plastic deformation and wear

Failure modeling and reliability analysis for motion mechanism with clearance joints under plastic deformation and wear

Competing Failure Modeling for Systems under Classified Random Shocks and Degradation

Development and application of high strength gears

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