Publication detail

Global sensitivity analysis of failure probability caused by fatigue crack propagation

KALA, Z.

Original Title

Global sensitivity analysis of failure probability caused by fatigue crack propagation

Type

article in a collection out of WoS and Scopus

Language

English

Original Abstract

The probability of failure of a load bearing steel member is investigated using a new type of global sensitivity analysis subordinated to contrasts. The main objective of the probability-oriented sensitivity analysis is structural reliability. The structural reliability methodology uses random variables as inputs. The subject of interest is the identification of those random variables that are most important when the limit state of a steel bridge member is reached. The limit state is defined by the occurrence of brittle fracture, which results from stress changes caused by multiple repeated loads. The propagation of a single-edge crack from initial to critical size is analysed using linear fracture mechanics. The failure probability and sensitivity indices are calculated using sampling-based methods. The sensitivity indices are estimated using double-nested-loop simulation of the Latin Hypercube Sampling method. New findings indicate that interaction effects among input variables strongly influence the probability of failure especially at the beginning of the operating period.

Keywords

sensitivity analysis; failure probability; steel; bridge; fracture;

Authors

KALA, Z.

Released

17. 5. 2019

Location

Vilnius

ISBN

978-609-476-197-3

Book

13th International Conference MODERN BUILDING MATERIALS, STRUCTURES AND TECHNIQUES

ISBN

2029-9915

Periodical

Modern Building Materials, Structures and Techniques

State

Republic of Lithuania

Pages from

359

Pages to

365

Pages count

7

URL

http://webu3.vgtu.lt/uni/stf/mbmst/359-365_MBMST_054.pdf

BibTex

@inproceedings{BUT170448,
  author="Zdeněk {Kala}",
  title="Global sensitivity analysis of failure probability caused by fatigue crack propagation",
  booktitle="13th International Conference
MODERN BUILDING MATERIALS, STRUCTURES AND TECHNIQUES",
  year="2019",
  journal="Modern Building Materials, Structures and Techniques",
  pages="359--365",
  address="Vilnius",
  doi="10.3846/mbmst.2019.054",
  isbn="978-609-476-197-3",
  issn="2029-9915",
  url="http://webu3.vgtu.lt/uni/stf/mbmst/359-365_MBMST_054.pdf"
}