Application of Structural Systems Reliability Theory by Palle Thoft-Christensen PDF

By Palle Thoft-Christensen

ISBN-10: 3642827640

ISBN-13: 9783642827648

ISBN-10: 3642827667

ISBN-13: 9783642827662

During the final 20 years a growing number of universities provide classes on sleek structural reliability concept. A path on structural reliability idea is now a common a part of the curri­ culum for mechanical and structural engineering scholars. because of this, a couple of textbooks were released during this decade. In PlOst of those books it's proven how the reliability of unmarried structural contributors should be evaluated in a rational means. The equipment used tend to be so-called point 2 equipment, i. e. equipment concerning sure approximate iter­ ative calculations to procure an approximate price of the chance of failure of the struc­ tural individuals. In those equipment the joint likelihood distribution of proper variables (re­ sistance variables, lots, and so on. ) is simplified and the failure standards are idealized in one of these approach that the reliability calculations should be played with out an unreasonable volume of labor. even with the approximations and idealizations made it truly is believed rational remedy of uncertainties in structural engineering will be got by way of point 2 equipment. often, in­ adequate information are handy to make a extra complex estimate of the reliability of a struc­ tural member. it's been well-known for a few years absolutely passable estimate of the reliability of a constitution needs to be in response to a structures process. In a few occasions it truly is enough to estimate the reliability of the person structural individuals of a structural system.

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Extra resources for Application of Structural Systems Reliability Theory

Example text

As emphasized earlier a number of simplifications and idealizations must be made. This will influence the reliability of the model. Consider as an example a truss structure. g. by a linear elastic modelling. 1 INTRODUCTION 33 fluence the reliability of the bar. The influence due to the choice of model (model uncertainty) will in many cases have a strong influence on the reliability of a structure and should therefore be included in the reliability analysis. 2] have treated model uncertainty especially in relation to bilinear hysteretic systems.

24. It is a series system with three elements and each of these elements is parallel systems with two failure elements. 24) where sPi ' i = 1, 2, 3, is the structure function for the parallel system i and where ep i . 24 5 = 1, .. 50 2. 5. 25. 2S Consider a structure S with the set of n failure elements E = {E I structure function s be given by , ... 25) e where = (e 1 , ... ,en) is the element state vector. A subset, A = {Eil i E I}, Ie {l, 2, ... 26) a subset ACE is a path set if the structure is in a non-failure state when all failure elements in A are in a non-failure state and all elements in E \A are in a failure state.

Baratta, A. : Probabilistic Methods in Structural Engineer- ing. Chapman & Hall, London, New York, 1984. 4] Ang, A. H-S. & Tang, W. : Probability Concepts in Engineering Planning and Design. John Wiley & Sons, New York, Vol. 2,1984. 5] Lind, N. , Krenk, S. & Madsen, H. : Safety of Structures. To be published by Prentice Hall Inc. 6] Gumbel, E. : Statistics of Extremes. Columbia University Press, 1958. 7] Hoadley, P. W. & Yura, J. A. Ultimate Strength of Tubular Joints Subjected to Combined Loads.

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