The work in this report is motivated by the performance-based engineering approach advocated by PEER. A comprehensive, object-oriented software framework for finite element sensitivity and reliability analysis is developed. The work builds on the existing software OpenSees. An essential ingredient in finite element reliability analysis is accurate, consistent and efficient computation of respon...

Many of the most promising applications for mobile robots require very high reliability. The current generation of mobile robots is, for the most part, highly unreliable. The few mobile robots that currently demonstrate high reliability achieve this reliability at a high financial cost. In order for mobile robots to be more widely used, it will be necessary to find ways to provide high mission ...

In this paper, a heuristic is proposed to find out the reliability of a directed network by using directed acyclic graph. This directed network has imperfect nodes as well as imperfect links. Directed acyclic graph based reliability computation involves three main steps: In the first step, built the reliability function of the given directed network which is the union of all min-paths from sour...

In order to solve reliability evaluation of life of electromagnetic valve of EMUs, this paper evaluates the life of electromagnetic valve under small sample size based on zero-failure data. Firstly, this paper selects the prior distribution of the failure probability, and then the posteriori distribution is obtained by using the Bayes method so that the Bayes estimation can be received under th...

Reliability analysis of a system based on probability theory has been widely studied and used. Nevertheless, it sometimes meets with one problem that the components of a system may have only few or even no samples, so that we cannot estimate their probability distributions via statistics. Then reliability analysis of a system based on uncertainty theory has been proposed. However, in a general ...

In this paper, we propose an analytical model for component-based heterogeneous software architecture reliability and a method to find the solution for finding the optimal reliability of the overall software system according to the reliability of each component, the operational profile, and the architecture of software. Our approach is based on Markov chain properties and architecture perspecti...

Purpose – The spindle behavior of machines and systems depends largely on the choice and design quality of the mechanical components used for the displacement between different parts. As far as very high technology is concerned, air bearings are suitable, for instance, for machining a telescope mirror or for systems used in medical applications that require a micro and nanometric resolution in ...