Event oriented analysis of series structural systems

Žiha, Kalman

doi:10.1016/s0167-4730(00)00022-9

Cited by 8 publications

(7 citation statements)

References 9 publications

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“…It is recognized [15] that obtaining the component lifetime distribution is the bottleneck. Quantitative and qualitative analysis are both necessary, for the systems and the subsystems of events can be presented by the notion of events and by the appropriate probabilities associated with each of the events [2].…”

Section: Description Of a Rare-event Problem Of Redundancy Systemmentioning

confidence: 99%

“…Causes of uncertainties may be interrelated and introduce dependencies, while ignoring these dependencies may lead to large errors. The states of a system are represented by a system and by subsystems of random events in different relations and on various levels [1][2]. In practice, reliability prediction of an engineering complex system is often viewed as object analysis of many discrete interacting conditional failures of subsystems in different ways [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, the uncertainties of system failure modes may be considered at another level. In event-oriented system analysis a system is defined not only by its physical components, but also by its all or at least known or important states [2]. There are some states that can be in common with several system features that may be unobservable, undefined or unknown.…”

Section: Introductionmentioning

confidence: 99%

“…The uncertainty of a single stochastic event A with a known probability ( ) 0 P A ≠ plays a fundamental role in information theory. Most conditional moment-constrained information can be expressed in terms of Shannon's original expressions for the entropy [2,23]. In addition to the single stochastic complete failure events, more important are the incomplete failure mode analysis and condition monitoring of complex systems.…”

Section: Introductionmentioning

confidence: 99%

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Uncertainty estimation of reliability redundancy in complex systems based on the Cross-Entropy method

et al. 2009

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The article aims to estimate the uncertainty of possible failure events of redundancy systems based on the crossentropy (CE) method. Failure events of subsystems and components always result in the incomplete or complete failure of engineering systems, yet optimal condition monitoring of a complex system is heavily dependent on the accuracy analysis of all the failure events of subsystems and components and their interaction effects. The CE method is a versatile tool for estimating probabilities of rare events in complex systems with the least bias beyond conditional constraints. In this paper we introduce the CE method for analyzing the system reliability with the highest uncertainty among all possibilities satisfying supplied moment constraints, and developed numerical CE algorithms capable of estimating the uncertainty of failure modes in an M-dimensional redundancy system domain with moment constraints of order up to N. A general computational framework of event estimation and condition monitoring of redundancy systems is illustrated in which the Monte Carlo simulations and CE optimization algorithms are combined. Numerical results indicate potential improvements in the measure of the uncertainty of redundancy systems that would lead to the best-fit analysis of all the complete or incomplete failure events.

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Section: Description Of a Rare-event Problem Of Redundancy Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Uncertainty estimation of reliability redundancy in complex systems based on the Cross-Entropy method

et al. 2009

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“…It describes how the conditional entropy of operational subsystem of events can model important property of ship structures, the redundancy. Redundancy is recognizable property of the complex engineering objects such as ship and marine structures ( [6], [7], [8]). It can be considered as the capacity of a system to operate even when some of the physical components have failed; therefore it is a desired capability of all structures that tend to be reliable in service.…”

Section: Introductionmentioning

confidence: 99%

On the Assessment of Redundancy of Ship Structural Components

Blagojević

Žiha

2008

Volume 2: Structures, Safety and Reliability

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This paper firstly sums up some of the views on structural redundancy with particular emphasis on ship and marine structures. Next, it places the engineering decision process in the event space and, consequently, applies the representation of operational modes by systems of events. Furthermore, the paper takes some of the relations from the entropy concept in information theory. The entropy concept in probability theory is employed in the paper to redefine the structural redundancy in terms of conditional entropy of operational modes. The redundancy modeling is presented by systems of operational modes in which some of the transitive events may lead to new operational states. Finally, a ship substructure example of a stiffened panel with a girder is elaborated. The conclusion supports the thesis that the efficient structural redundancy can be comprehended as the most uniform distribution of the operational modes probabilities. Moreover, the efficient structural redundancy can be maximized.

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Simulation Analysis of Building Structure Under Combined Action of Earthquake and Explosion

Zhou,

2024

Lecture Notes in Civil Engineering

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Event oriented analysis of series structural systems

Cited by 8 publications

References 9 publications

Uncertainty estimation of reliability redundancy in complex systems based on the Cross-Entropy method

Uncertainty estimation of reliability redundancy in complex systems based on the Cross-Entropy method

On the Assessment of Redundancy of Ship Structural Components

Simulation Analysis of Building Structure Under Combined Action of Earthquake and Explosion

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