An Interface Model for Multi-Scale Nonlinear Analysis of Masonry Structures

2009 ◽  
Author(s):  
L. Macorini ◽  
B.A. Izzuddin
Keyword(s):  
Nonlinear Analysis ◽  
Masonry Structures ◽  
Interface Model ◽  
Multi Scale

scholarly journals Tuned Mass Damper Design for Slender Masonry Structures: A Framework for Linear and Nonlinear Analysis

2021 ◽  
Vol 11 (8) ◽  
pp. 3425
Author(s):  
Marco Zucca ◽  
Nicola Longarini ◽  
Marco Simoncelli ◽  
Aly Mousaad Aly
Keyword(s):  
Nonlinear Analysis ◽  
Linear Time ◽  
Design Procedure ◽  
Time History ◽  
Tuned Mass Damper ◽  
Second Phase ◽  
Masonry Structures ◽  
Base Shear ◽  
Mass Damper ◽  
Linear And Nonlinear

The paper presents a proposed framework to optimize the tuned mass damper (TMD) design, useful for seismic improvement of slender masonry structures. A historical masonry chimney located in northern Italy was considered to illustrate the proposed TMD design procedure and to evaluate the seismic performance of the system. The optimization process was subdivided into two fundamental phases. In the first phase, the main TMD parameters were defined starting from the dynamic behavior of the chimney by finite element modeling (FEM). A series of linear time-history analyses were carried out to point out the structural improvements in terms of top displacement, base shear, and bending moment. In the second phase, masonry's nonlinear behavior was considered, and a fiber model of the chimney was implemented. Pushover analyses were performed to obtain the capacity curve of the structure and to evaluate the performance of the TMD. The results of the linear and nonlinear analysis reveal the effectiveness of the proposed TMD design procedure for slender masonry structures.

scholarly journals Analysis of masonry structures: review of and recent trends in homogenization techniquesThis article is one of a selection of papers published in this Special Issue on Masonry.

2007 ◽  
Vol 34 (11) ◽  
pp. 1443-1457 ◽  
Author(s):  
Paulo B. Lourenço ◽  
Gabriele Milani ◽  
Antonio Tralli ◽  
Alberto Zucchini
Keyword(s):  
Structural Analysis ◽  
Nonlinear Analysis ◽  
Polynomial Expansion ◽  
Masonry Structures ◽  
Special Issue ◽  
Advantages And Disadvantages ◽  
Long Time ◽  
Recent Trends ◽  
Selection Of ◽  
Conceptual Difficulties

The mechanics of masonry structures have been underdeveloped for a long time in comparison with other fields of knowledge. Presently, nonlinear analysis is a popular field in masonry research and homogenization techniques play a major role despite the mathematical and conceptual difficulties inherent to this approach. This paper addresses different homogenization techniques available in published literature, aiming at defining a first catalogue and at discussing the advantages and disadvantages of the different approaches. Finally, special attention is given to a micromechanical based model and a model based on a polynomial expansion of the microstress field. These seem promising and accurate strategies for advanced structural analysis.

Limit State Strength of Unreinforced Masonry Structures

2013 ◽  
Vol 29 (1) ◽  
pp. 1-31 ◽  
Author(s):  
A. H. Akhaveissy
Keyword(s):  
Limit State ◽  
Lateral Force ◽  
Unreinforced Masonry ◽  
Masonry Walls ◽  
Masonry Structures ◽  
Interface Model ◽  
Numerical Predictions ◽  
State Strength ◽  
New Formula ◽  
Error Percentage

This paper presents a new formula to estimate the ultimate lateral force of unreinforced masonry structures. The ratio of the wall's height to the wall's width is used to predict the ultimate lateral load of the wall. The coefficient is determined by the numerical implementation of an interface model to simulate the behavior of mortar joints in masonry walls. The numerical predictions are compared with the FEMA guidelines and the experimental data. The comparisons show that the loads that are predicted by the proposed formula have a lower error percentage than the FEMA guidelines. Thus, the proposed formula can be used to analyze unreinforced masonry structures.

Multi-scale nonlinear analysis of drying dynamics in the mixed pulsed drying fluidized beds

2018 ◽  
Vol 339 ◽  
pp. 958-969 ◽  
Author(s):  
Hong-Wei Li ◽  
Ting Wang ◽  
Chang Chang ◽  
Bin Sun ◽  
Wen-peng Hong ◽  
...  
Keyword(s):  
Nonlinear Analysis ◽  
Fluidized Beds ◽  
Multi Scale
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