Finite element modelling of unreinforced masonry shear wallettes strengthened using twisted steel bars

2012 ◽  
Vol 33 ◽  
pp. 14-24 ◽  
Author(s):  
Robert B. Petersen ◽  
Najif Ismail ◽  
Mark J. Masia ◽  
Jason M. Ingham
Keyword(s):  
Finite Element ◽  
Finite Element Modelling ◽  
Unreinforced Masonry ◽  
Element Modelling ◽  
Steel Bars

scholarly journals A Study on Finite Element Modelling and Analysis with respect to Experimental Results of Strengthened Unreinforced Masonry Walls With and Without Kevlar-FRP

2021 ◽  
Vol 23 (2) ◽  
pp. 67-77
Author(s):  
Sugeng Wijanto ◽  
Takim Andriono ◽  
Jovita Tanudjaja
Keyword(s):  
Finite Element ◽  
Finite Element Modelling ◽  
Three Dimensional ◽  
Unreinforced Masonry ◽  
Shear Capacity ◽  
Masonry Walls ◽  
Test Results ◽  
Element Modelling ◽  
Laboratory Test Results ◽  
Set Up

Unreinforced masonry (URM) walls, found in most historical buildings in Indonesia, are relatively brittle with wide variety of material properties. The behaviour of URM walls is very complex, especially when subjected to seismic excitation. In this research, a finite element modelling was set up in order to analyse the seismic performance of URM wall experimental test units, with and without strengthening material. The analysis was conducted using SAP2000 computer program. Three dimensional solids and springs as link connectors were assigned to represent the masonry behaviour. This research aims to compare results obtained from the computer analysis and the previously conducted laboratory experiments. The effectiveness of Kevlar fibre material, which was installed on both wall surfaces and modelled as truss element was also investigated. It was found that the failure mechanisms shown by the SAP2000 model was similar to the laboratory test results. The use of Kevlar Fibre as strengthening material was found able to significantly increase the stiffness and shear capacity of the URM wall.

scholarly journals Pushover Tests on Unreinforced Masonry Wallettes Retrofitted with an Innovative Coating: Experimental Study and Finite Element Modelling

Materials ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 6815
Author(s):  
Jean-Patrick Plassiard ◽  
Mathieu Eymard ◽  
Ibrahim Alachek ◽  
Olivier Plé
Keyword(s):  
Experimental Study ◽  
Finite Element ◽  
Finite Element Modelling ◽  
Unreinforced Masonry ◽  
Failure Pattern ◽  
Finite Element Models ◽  
Strength Gain ◽  
Continuum Approach ◽  
Element Modelling ◽  
Significant Strength

This paper investigates the mechanical contribution of an innovative coating applied on masonry wallettes compared to a traditional one. In both cases, the multifunctional coatings were insulating coatings intended for thermal refurbishment, but they could also be used to retrofit masonry. Uncoated specimens as well as coated ones were submitted to pushover tests to establish the strength gain. URM walls experienced brittle failures while the coated walls exhibited significant strength gains and strong ductility. The corresponding finite element models were developed. The behaviour of the URM walls was reproduced accurately in terms of strength and failure pattern. Models involving the coatings were used to partially retrieve the behaviour and to highlight the issues of a continuum approach.

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