A semi-random field finite element method to predict the maximum eccentric compressive load for masonry prisms

Ehsan Moradabadi, Debra Laefer, Julie A. Clarke, Paulo B. Lourenço

Research output: Contribution to journalArticle

Abstract

An accurate prediction of the compressive strength of masonry is essential both for the analysis of existing structures and the construction of new masonry buildings. Since experimental material testing of individual masonry components (e.g., masonry unit and mortar joints) often produces highly variable results, this paper presents a numerical modelling based approach to address the associated uncertainty for the prediction of the maximum compressive load of masonry prisms. The method considers a numerical model to be semi-random for a masonry prism by adopting a Latin Hypercube simulation method used in conjunction with a parametric finite element model of the individual masonry prism. The proposed method is applied to two types of masonry prisms (hollow blocks and solid clay bricks), for which experimental testing was conducted as part of the 9th International Masonry Conference held at Guimarães in July 2014. A Class A prediction (presented before the tests were conducted) was generated for the two masonry prisms according to the proposed methodology, and the results were compared to the final experimental testing results. The root mean square deviation of the method for prediction of eccentric compressive strength of both types of prisms differed by only 2.2 KN, thereby demonstrating the potential for this probabilistic approach.

Original languageEnglish (US)
Pages (from-to)489-500
Number of pages12
JournalConstruction and Building Materials
Volume77
DOIs
StatePublished - Feb 15 2015

Fingerprint

Prisms
Finite element method
Compressive strength
Materials testing
Testing
Brick
Mortar
Numerical models
Clay

Keywords

  • Eccentric compressive strength
  • Latin Hypercube sampling
  • Masonry structure
  • Semi-random field finite element
  • Uncertainty analysis

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

Cite this

A semi-random field finite element method to predict the maximum eccentric compressive load for masonry prisms. / Moradabadi, Ehsan; Laefer, Debra; Clarke, Julie A.; Lourenço, Paulo B.

In: Construction and Building Materials, Vol. 77, 15.02.2015, p. 489-500.

Research output: Contribution to journalArticle

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