Surface crack analysis under cyclic loads using probabilistic S-version finite element model

M. R M Akramin, M. S. Shaari, Ahmad Kamal Ariffin Mohd Ihsan, Masanori Kikuchi, Shahrum Abdullah

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The failure in engineering structures has always become a norm for the engineers to encounter. Thus, it is very important to improve the quantification of uncertainty in fatigue analysis. The main objective of this paper is to examine the effect to the uncertainties parameter in numerical calculations for multiple surface crack problems. A finite thickness plate with surface cracks subjected to random loads with constant-amplitude loading is considered in the fatigue crack growth analysis using a newly developed probabilistic S-version finite element model (ProbS-FEM). The virtual crack closure method was used to calculate the stress intensity factor, whilst the Latin hypercube sampling was employed in ProbS-FEM to determine the probabilistic distribution. Specimens with a multiple notch were prepared and analysed in the fatigue tests. The crack grown both in experimental and numerical simulations were verified. The results from the newly developed ProbS-FEM agreed with the experimental findings. The newly developed approach is demonstrated on a complex cracked structure.

Original languageEnglish
Pages (from-to)1851-1865
Number of pages15
JournalJournal of the Brazilian Society of Mechanical Sciences and Engineering
Volume37
Issue number6
DOIs
Publication statusPublished - 1 Nov 2015

Fingerprint

Cyclic loads
Cracks
Fatigue of materials
Crack closure
Fatigue crack propagation
Stress intensity factors
Sampling
Engineers
Computer simulation
Uncertainty

Keywords

  • Crack growth
  • Finite element model
  • Probabilistic
  • Stress intensity factor
  • Surface crack

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Surface crack analysis under cyclic loads using probabilistic S-version finite element model. / Akramin, M. R M; Shaari, M. S.; Mohd Ihsan, Ahmad Kamal Ariffin; Kikuchi, Masanori; Abdullah, Shahrum.

In: Journal of the Brazilian Society of Mechanical Sciences and Engineering, Vol. 37, No. 6, 01.11.2015, p. 1851-1865.

Research output: Contribution to journalArticle

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