Probabilistic indicators of structural redundancy in mechanics

Blagojević, Branko and Žiha, Kalman (2012) Probabilistic indicators of structural redundancy in mechanics. = Probabilistic indicators of structural redundancy in mechanics. World Journal of Mechanics, 2 (5). pp. 229-238. ISSN 2160-049X. Vrsta rada: ["eprint_fieldopt_article_type_article" not defined]. . Točan broj autora: 2.

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The paper in the introductory part reviews various definitions and interpretations of structural redundancy in mechanics. The study focuses on the general structural redundancy of systems after sequences of component failures followed by possible load redistributions. The second section briefly summarizes the Event Oriented System Analysis and structural redundancy in terms of the conditional probabilistic entropy. Mechanical responses to adverse loads in this approach are represented by random operational and failure events in the lifetime. The general redundancy measure in the third section of the paper employs the information entropy and goes beyond existing formulations since it includes all functional modes in service. The paper continues with a summary of traditional redundancy indices. In addition, it proposes an alternative redundancy index that accounts for the transition to secondary functional level in case of failures of primary components. The example of a ship structure illustrates the usage of the conditional entropy of subsystems of operational events and compares it to the traditional and newly proposed redundancy indices. The study at the end investigates how to enhance the safety of structures by using the redundancy based design.

Item Type: Article (["eprint_fieldopt_article_type_article" not defined])
Keywords (Croatian): reliability ; Event-oriented System Analysis ; entropy ; redundancy ; Redundancy Index ; structures
Subjects: TECHNICAL SCIENCE > Shipbuilding
Divisions: 600 Department of Naval Engineering and Marine Technology > 640 Chair of Shipbuilding Technology
Indexed in Web of Science: No
Indexed in Current Contents: No
Date Deposited: 08 Mar 2016 11:44
Last Modified: 10 Nov 2017 08:06

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