scholarly journals Fast Seismic Vulnerability Evaluation of Historical Masonry Aggregates through Local Analyses: an Adaptive NURBS-based Limit Analysis Approach

2021 ◽  
Author(s):  
N. Grillanda ◽  
M. Valente ◽  
G. Milani ◽  
F. Formigoni ◽  
A. Chiozzi ◽  
...  
Keyword(s):  
Limit Analysis ◽  
Seismic Vulnerability ◽  
Analysis Approach ◽  
Vulnerability Evaluation ◽  
Historical Masonry

Seismic Risk Mitigation of Historical Masonry Towers by Means of Prestressing Devices

2010 ◽  
Vol 133-134 ◽  
pp. 843-848 ◽  
Author(s):  
Adolfo Preciado Quiroz ◽  
Silvio T. Sperbeck ◽  
Harald Budelmann ◽  
Gianni Bartoli ◽  
Elham Bazrafshan
Keyword(s):  
Seismic Risk ◽  
Seismic Vulnerability ◽  
Risk Mitigation ◽  
Numerical Models ◽  
Failure Mechanisms ◽  
Masonry Towers ◽  
Seismic Risk Mitigation ◽  
Historical Masonry ◽  
Observed Damage ◽  
And Behavior

This work presents the investigation of the efficiency of different prestressing devices as a rehabilitation measure for the seismic risk mitigation of historical masonry towers. As a first phase, the seismic vulnerability of theoretical masonry towers was assessed by means of numerical models validated with information from the literature, observed damage and behavior of these structures due to passed earthquakes (crack pattern and failure mechanisms), and mainly taking into account the engineering experience. Afterwards, the validated models were rehabilitated with different prestressing devices; analyzing the results and concluding which device or the combination of them improved in a better way the seismic performance of the masonry towers. Finally, the methodology will be applied in two historical masonry towers located in seismic areas; the medieval tower “Torre Grossa” of San Gimignano, Italy, and one of the bell towers of the Cathedral of Colima, Mexico.

Ultimate strength of pin-loaded composite laminates: A limit analysis approach

2011 ◽  
Vol 93 (4) ◽  
pp. 1217-1224 ◽  
Author(s):  
Oualid Limam ◽  
Gilles Foret ◽  
Hatem Zenzri
Keyword(s):  
Ultimate Strength ◽  
Limit Analysis ◽  
Composite Laminates ◽  
Analysis Approach

POST-CRITICAL BEHAVIOR OF MODERATELY THICK AXISYMMETRIC SHELLS: A SEQUENTIAL LIMIT ANALYSIS APPROACH

2001 ◽  
Vol 01 (03) ◽  
pp. 293-311 ◽  
Author(s):  
LEONE CORRADI ◽  
NICOLA PANZERI ◽  
CARLO POGGI
Keyword(s):  
Critical Behavior ◽  
Limit Analysis ◽  
Large Deformations ◽  
Material Behavior ◽  
Large Displacement ◽  
Analysis Approach ◽  
Rigid Plastic ◽  
Axisymmetric Shells ◽  
Energy Absorbers ◽  
Displacement Effects

The design of some steel shells, like energy absorbers or bumpers, requires the knowledge of their behavior in large deformations. In this paper, the method of sequential limit analysis is presented and applied to axisymmetric shells in order to study their post-collapse response. Although the material behavior is assumed as rigid-plastic, results compare favorably with those produced by elastic-plastic incremental analyses and the procedure appears to be more efficient and numerically stable. Large displacement effects, both of stable and unstable nature, are implicitly accounted for by mesh updating.

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