Abstract
Introduction. The formation of an algorithm for designing mechanical systems machines in terms of reliability is considered. The algorithm is built with account for the latest publications on the standardization of reliability indices of machines and components at the initial stages of the project. The recovery cost technique, free from the need to use the exponential law when distributing reliability indices between system elements, is presented. The concepts of the required and achieved reliability factors and methods for obtaining them at different stages of the project are introduced. The possibilities of the project modification to provide a given level of reliability are considered. Research objective is to combine modern scientific developments on the standardization of reliability indices of machines, components, and methods for obtaining the required operation life with the design drafting stages.
Highlights
Structural AnalysisIn scientific sources and educational literature on reliability, the structural interelement coupling of the technical specifications (TS) reliability is generally accepted as a bottom-up circuit analysis from POS elements to POS systems with sequential, concurrent and combined interaction of elements whose block schemes are widely known
The formation of an algorithm for designing mechanical systems – machines in terms of reliability is considered
At the level of components of a mechanical system (MS) [11], degradation failures due to metal fatigue, wear, corrosion, and aging of materials are not described by the exponential law (2), hereat its application in these cases is incorrect
Summary
In scientific sources and educational literature on reliability, the structural interelement coupling of the TS reliability is generally accepted as a bottom-up circuit analysis from POS elements to POS systems with sequential, concurrent and combined interaction of elements whose block schemes are widely known. At the level of components of a mechanical system (MS) [11], degradation failures due to metal fatigue, wear, corrosion, and aging of materials are not described by the exponential law (2), hereat its application in these cases is incorrect For this reason, the papers present structural diagrams of machines to the level of subsystems, aggregates. Application of the exponential law expression (2) does not provide simple options for a top-down circuit analysis, both for the relations (10, 11) and for more complex structures with concurrent interaction of elements (with switches, element redundancy and circuits, etc.). Perhaps for this reason, examples of a top-down circuit analysis of such structures are not given in the literature. The numerical value of TS PF through PF of the elements is represented by the expres-
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
