Modelling Masonry Arch Bridges using Commercial Finite Element Software

2009 ◽  
Author(s):  
T.E. Ford ◽  
C.E. Augarde ◽  
S.S. Tuxford
Keyword(s):  
Finite Element ◽  
Masonry Arch ◽  
Finite Element Software ◽  
Arch Bridges

scholarly journals Seismic Response of a Historical Masonry Bridge under Near and Far-fault Ground Motions

2021 ◽  
Author(s):  
Alper Özmen ◽  
Erkut Sayın
Keyword(s):  
Finite Element ◽  
Natural Disasters ◽  
Seismic Response ◽  
Ground Motions ◽  
Masonry Arch ◽  
Finite Element Software ◽  
Near Fault ◽  
Historical Masonry ◽  
Arch Bridges ◽  
Far Fault

Historical masonry arch bridges which might be vulnerable to natural disasters are important part of the cultural heritage. Natural disasters, especially earthquakes can inflict damage to these structural systems. This paper aims to investigate a comparison of the effects of near and far-fault ground motions on the seismic response of masonry arch bridges under different earthquakes. Kalender masonry arch bridge which is located in Ergani, Turkey is selected as a numerical model. For this purpose, three-dimensional finite element model of the bridge is generated with ANSYS finite element software with macro modelling approach. Seismic response of the bridge is assessed by means of time-history analyses. The near-fault and far-fault ground motions, which have approximately equal peak ground accelerations, of 1979 Imperial Valley, 1999 Chi-Chi, 1999 Kocaeli and 2010 Darfield earthquakes are considered for the analyses. Comparisons between maximum displacements, maximum and minimum stress, which were acquired from the dynamic analyses of the masonry bridge subjected to each fault effect, are obtained. The study demonstrates that far-fault ground motions are as important as near-fault ground motions and it can be used together with near-fault ground motion for further evaluation of such historical masonry bridges.

Finite element model calibration effects on the earthquake response of masonry arch bridges

2011 ◽  
Vol 47 (7) ◽  
pp. 621-634 ◽  
Author(s):  
Barış Sevim ◽  
Alemdar Bayraktar ◽  
Ahmet Can Altunişik ◽  
Sezer Atamtürktür ◽  
Fatma Birinci
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Model Calibration ◽  
Element Model ◽  
Earthquake Response ◽  
Masonry Arch ◽  
Arch Bridges ◽  
Finite Element Model Calibration

Safety analysis of existing masonry arch bridges by nonlinear finite element simulations

2019 ◽  
Vol 29 (1) ◽  
pp. 126-143 ◽  
Author(s):  
Stephanie A Franck ◽  
Nick Bretschneider ◽  
Volker Slowik
Keyword(s):  
Finite Element ◽  
Safety Evaluation ◽  
Failure Criteria ◽  
Nonlinear Finite Element ◽  
Crack Model ◽  
Masonry Arch ◽  
Load Bearing ◽  
Safety Margins ◽  
Arch Bridges ◽  
Analysis Concept

In order to simulate the specific load-carrying behavior of masonry arch bridges, nonlinear finite element analyses may be carried out. To that end, an associated analysis concept is proposed in this paper. The applied smeared crack model allows one to realistically reproduce characteristic damage patterns observed at existing bridge structures of this type. By using the proposed analysis concept, load-bearing reserves may be revealed and possible causes for existing damage may be identified. The concept includes appropriate failure criteria and corresponding safety margins. The latter approximately conform to valid design codes, but also account for the specifics of nonlinear analyses. In parametric studies, the objectivity of the analysis results and influences of different material parameters on the load-bearing behavior were investigated. Furthermore, two examples of the safety evaluation of existing masonry arch bridges are presented. In both cases, observed damage patterns could be reproduced in the numerical simulations. Destructive load tests at a disused bridge provided an additional opportunity to validate the proposed analysis concept.

scholarly journals Low-Cycle Fatigue Crack Initiation Simulation and Life Prediction of Powder Superalloy Considering Inclusion-Matrix Interface Debonding

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4018
Author(s):  
Shuming Zhang ◽  
Yuanming Xu ◽  
Hao Fu ◽  
Yaowei Wen ◽  
Yibing Wang ◽  
...  
Keyword(s):  
Finite Element ◽  
Crack Initiation ◽  
Life Prediction ◽  
Damage Mechanics ◽  
Low Cycle Fatigue ◽  
Fatigue Crack Initiation ◽  
Fatigue Loading ◽  
Interface Debonding ◽  
Damage Evolution Equation ◽  
Finite Element Software

From the perspective of damage mechanics, the damage parameters were introduced as the characterizing quantity of the decrease in the mechanical properties of powder superalloy material FGH96 under fatigue loading. By deriving a damage evolution equation, a fatigue life prediction model of powder superalloy containing inclusions was constructed based on damage mechanics. The specimens containing elliptical subsurface inclusions and semielliptical surface inclusions were considered. The CONTA172 and TARGE169 elements of finite element software (ANSYS) were used to simulate the interfacial debonding between the inclusions and matrix, and the interface crack initiation life was calculated. Through finite element modeling, the stress field evolution during the interface debonding was traced by simulation. Finally, the effect of the position and shape size of inclusions on interface debonding was explored.

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