Reliability analysis of descent systems of planetary vehicles using bivariate exponential distribution

Sarper, Hüseyin

doi:10.1109/rams.2005.1408356

Cited by 11 publications

(8 citation statements)

References 5 publications

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“…Sarper 25 applies Marshall and Olkin’s (M&O) 26 bivariate exponential distribution (BVED) to both systems and derives reliability expressions that include correlation coefficient between the pairs. The fatal shock model of M&O 26 considers failures caused by three types of Poisson shocks from three independent sources on a system consisting of two components.…”

Section: Review Of Literature On Correlated Reliabilitymentioning

confidence: 99%

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Correlated reliability and an application: Propulsive landing on Mars

Sarper

2019

Proceedings of the Institution of Mechanical Engineers, Part O:

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This article discusses reliability of landers and provides a review and examples of correlated reliability. Examples are cited to show generally beneficial effects of correlation in system reliability. Then, reliabilities of two near future landing systems are studied using two analytical (Downton, and Marshall & Olkin) bivariate exponential distributions and two simulation methods that incorporate correlation in reliability calculations. Both landing systems are composed of correlated two-unit subsystems. Numerical examples show mean system life, standard deviation of the system life, mean system life confidence interval, and reliability for each lander’s propulsive descent. Both simulation method results are in between the results obtained from the two analytical methods and Downton’s method yields the most conservative reliability. This article also shows how the Downton method–based reliability value can be predicted as a function of the reliabilities obtained from the other three methods. An up-to-date literature review of all related topics is also provided.

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Section: Review Of Literature On Correlated Reliabilitymentioning

confidence: 99%

“…Unlike somewhat cumbersome calculus required for Downton’s 29 method, the M&O 26 model has easier expressions to work with. For the M&O model, Sarper 25,66 has derived the following reliability formulas using a positive correlation coefficient ( ρ ) and a failure rate of µ (1/mean life)…”

Section: The Fatal Shock Model Of Mando To Incorporate Dependencymentioning

confidence: 99%

Correlated reliability and an application: Propulsive landing on Mars

Sarper

2019

Proceedings of the Institution of Mechanical Engineers, Part O:

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“…The first term in {} of the right part of Eq.12, i.e. 0~( ') (14) where n is the number of load actions to each of the tooth of the gear, 2mn is the total number of load action to the system (the gear set).…”

Section: Reliability Modeling Of Gear Transmission System Under Variamentioning

confidence: 99%

“…For instance, stress-strength interference analysis method was applied to calculate gear transmission system reliability, implying that a gear is equivalent to a component [11][12][13][14] and only one tooth is considered for gear reliability estimation [15][16][17] . In fact, simplification has long been the common practice for complex system reliability analysis, though variety of errors may be brought about.…”

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confidence: 99%

Time domain series system definition and gear set reliability modeling

Xie

Qian

2016

Reliability Engineering & System Safety

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“…The reliabilities of some components, such as gear, shaft, rolling contact bearing, and spline, are calculated and then the reliability of a threestage gear reducer is estimated based on the series-parallel function configuration [3]. The reliability of a gear transition system is analyzed while considering the single cylindrical gear reducer as the research objective [4]. Reliability-based design optimization models are built for all the parts of a 2 K-H planetary gear reducer [5].…”

Section: Introductionmentioning

confidence: 99%

Reliability Analysis of a Filtering Reducer under the Discrete Space Environmental Shocks

Lu¹,

Wang

Chen

et al. 2014

Advances in Mechanical Engineering

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Dynamic reliability analysis of a filtering reducer is performed by accounting for discrete shocks from the space environment. Gears are considered as the lumped mass and meanwhile the meshing between different gears is equivalent to a dynamic system consisting of springs and dampers during construction of the dynamic model. The Newmark method is employed to resolve differential equations, and then the additional acceleration could be obtained, caused by shocks to the filtering reducer. Dynamic reliability analysis is conducted with the help of the Simulink tool for the outputs. The results are hopefully useful for spacecraft mechanism design.

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Reliability analysis of descent systems of planetary vehicles using bivariate exponential distribution

Cited by 11 publications

References 5 publications

Correlated reliability and an application: Propulsive landing on Mars

Correlated reliability and an application: Propulsive landing on Mars

Time domain series system definition and gear set reliability modeling

Reliability Analysis of a Filtering Reducer under the Discrete Space Environmental Shocks

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