scholarly journals Finite Element Modeling of Masonry Infill Walls Equipped with Structural Fuse

2018 ◽  
Author(s):  
Ali M. Memari ◽  
Mohammad Aliaari
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Infill Walls ◽  
Masonry Infill ◽  
Element Modeling ◽  
Masonry Infill Walls ◽  
Structural Fuse

scholarly journals Development of a Seismic Design Approach for Infill Walls Equipped with Structural Fuse

2012 ◽  
Vol 6 (1) ◽  
pp. 249-263 ◽  
Author(s):  
Mohammad Aliaari ◽  
Ali M. Memari
Keyword(s):  
Seismic Design ◽  
Design Procedure ◽  
Design Approach ◽  
Infill Wall ◽  
Infill Walls ◽  
Isolation System ◽  
Masonry Infill ◽  
Masonry Infill Walls ◽  
Structural Fuse ◽  
Moment Resisting

Presented herein is a seismic design approach developed for a proposed infill wall “structural fuse” system for use in building frames. The purpose of this system is to prevent damage to frame or infill walls due to infill wall-frame in-teraction during potentially damaging earthquakes by isolating them through a “sacrificial” component or a structural fuse. The design approach includes a procedure for design and application of the fuse system in a multi-bay, multi-story build-ing with moment resisting frames. The empirical equation developed to predict the in-plane strength of masonry infill walls equipped with structural fuse is discussed. A calculation method is suggested to specify an appropriate fuse element capacity arrangement in a building frame in order to achieve desirable and controlled structural performance. The design procedure is shown through application to two buildings used for example, a low-rise (4-story) and a mid-rise (8-story) building. The result of the study demonstrates that the proposed isolation system has merits and can potentially improve the seismic performance of masonry infill walls by protecting the infill wall and the frame from damages due to their in-teraction.

scholarly journals Numerical Investigation on the Influence of In-Plane Damage on the Out-of-Plane Behavior of Masonry Infill Walls

2020 ◽  
Vol 2020 ◽  
pp. 1-16
Author(s):  
Xiaomin Wang ◽  
Weitong Zhao ◽  
Jingchang Kong ◽  
Tiejun Zhao
Keyword(s):  
Finite Element ◽  
Aspect Ratio ◽  
Finite Element Model ◽  
Slenderness Ratio ◽  
Element Model ◽  
Infill Wall ◽  
Infill Walls ◽  
Masonry Infill ◽  
Masonry Infill Walls ◽  
Out Of Plane

This study presents a finite element model to investigate the bidirectional seismic behavior of masonry infill walls. The test data are utilized to verify the numerical model. The comparison between the analytical and the experimental results indicates that the finite element model can successfully predict the failure mode, stiffness, and strength of the masonry infill wall. Based on the model, the effects of aspect ratio (height to length), slenderness ratio (height to thickness), and masonry strength on the out-of-plane (OOP) response of infill wall with in-plane (IP) damage are explored. Considering the aspect ratio, slenderness ratio, and masonry strength of infill wall, the OOP behavior of infill wall with and without IP damage is studied. Finally the reduction of the stiffness and strength in the OOP direction, due to the IP damage, is discussed.

Seismic Performance of Nonductile Reinforced Concrete Frames with Masonry Infill Walls—I: Development of a Strut Model Enhanced by Finite Element Models

2016 ◽  
Vol 32 (2) ◽  
pp. 795-818 ◽  
Author(s):  
Siamak Sattar ◽  
Abbie B. Liel
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Failure Modes ◽  
Nonlinear Dynamic Analysis ◽  
Time History ◽  
Fe Model ◽  
Infill Walls ◽  
Masonry Infill ◽  
Masonry Infill Walls ◽  
Rc Frames

Reinforced concrete (RC) frames with masonry infill walls are prevalent in high-seismicity areas worldwide and have experienced significant damage in earthquakes. This paper proposes a finite element–enhanced strut model to simulate the in-plane seismic response of masonry-infilled RC frames through time-history analysis. The strut backbone defining the behavior of the wall is developed from the response extracted from the finite element (FE) model(s) for the infill and frame configuration of interest. These struts are combined with models capturing flexural and shear failures of beam-columns to simulate building response. The strut model takes advantage of the accuracy of the FE modeling results, yet is computationally efficient for use in nonlinear dynamic analysis. The robustness of the proposed strut model is examined through comparison with experimental results for frames with different failure modes. This modeling approach is used in the companion paper to simulate the collapse response of 1920s-era California frames.

Exact First Order Finite Element Modeling for Eddy Current NDE

1991 ◽  
Vol 3 (1) ◽  
pp. 235-253 ◽  
Author(s):  
L. D. Philipp ◽  
Q. H. Nguyen ◽  
D. D. Derkacht ◽  
D. J. Lynch ◽  
A. Mahmood
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Eddy Current ◽  
Element Modeling ◽  
First Order ◽  
Eddy Current Nde
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