Structural Identification of Large Finite Element Models Using Commodity Computing Clusters for Parallel Genetic Algorithms

2105 ◽  
Author(s):  
MATTHEW WHELAN ◽  
TIMOTHY KERNICKY ◽  
NEAL ZAMUDIO
Keyword(s):  
Finite Element ◽  
Genetic Algorithms ◽  
Structural Identification ◽  
Finite Element Models ◽  
Parallel Genetic Algorithms ◽  
Commodity Computing

Damage Evaluation in Cracked Vibrating Beams Using Experimental Frequencies and Finite Element Models

1996 ◽  
Vol 2 (1) ◽  
pp. 69-86 ◽  
Author(s):  
Fabrizio Vestroni ◽  
Danilo Capecchi
Keyword(s):  
Experimental Data ◽  
Finite Element ◽  
Objective Function ◽  
Unique Solution ◽  
Structural Identification ◽  
Finite Element Models ◽  
Damage Evaluation ◽  
Finite Element Code ◽  
Expected Number ◽  
Vibrating Beams

The paper focuses on the problem of locating and quantifying damage in vibrating beams due to cracks. The problem is shown to have certain peculiarities that, to some extent, make it easier to solve than classical situations of structural identification. The solution of the problem is based on the minimization of the objective function that compares analytical and experimental data. A fairly general automated procedure is developed using a finite element code as a routine to evaluate modal quantities. The data necessary to locate and quantify damage correctly are discussed. General considerations lead to the conclusion that at least one measurement more than the expected number of cracked sections is necessary to obtain a unique solution. The procedures developed are applied to the study cases: a supported beam and a clamped beam with one or two cracks, using both simulated and experimental data. Satisfactory results are obtained. Although only beams were considered, the methodology developed can be extended to any kind of framed structure.

scholarly journals Using Genetic Algorithms with Multi-Objective Optimization to Adjust Finite Element Models of Welded Joints

Metals ◽  
2018 ◽  
Vol 8 (4) ◽  
pp. 230 ◽  
Author(s):  
Rubén Lostado Lorza ◽  
Rubén Escribano García ◽  
Roberto Fernandez Martinez ◽  
María Martínez Calvo
Keyword(s):  
Finite Element ◽  
Genetic Algorithms ◽  
Welded Joints ◽  
Finite Element Models ◽  
Multi Objective Optimization ◽  
Multi Objective
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