Safety assessment of structures in view of fuzzy randomness

authored by

Bernd Möller, Wolfgang Graf, Michael Beer

Abstract

Structural safety can be realistically assessed only if the uncertainty in the structural parameters is appropriately taken into consideration and realistic computational models are applied. Uncertainty must be accounted for in its natural form. Stochastic models are not always capable of fulfilling this task without restrictions, as uncertainty may also be characterized by fuzzy randomness or fuzziness. On the basis of the theory of the fuzzy random variables the fuzzy probabilistic safety concept is introduced and formulated as the fuzzy first order reliability method (FFORM). This concept permits fuzziness, randomness and fuzzy randomness to be accounted for simultaneously. FFORM is illustrated by way of an example; hereby, the influence of the computational model is also demonstrated.

External Organisation(s)

Technische Universität Dresden

Type

Article

Journal

Computers and Structures

Volume

81

Pages

1567-1582

No. of pages

16

ISSN

0045-7949

Publication date

07.2003

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Civil and Structural Engineering, Modelling and Simulation, Materials Science(all), Mechanical Engineering, Computer Science Applications

Electronic version(s)

https://doi.org/10.1016/S0045-7949(03)00147-0 (Access: Closed)