Publication detail

Selecting the objective function during the inverse identification of the parameters of a material model of concrete

HOKEŠ, F. KALA, J.

Original Title

Selecting the objective function during the inverse identification of the parameters of a material model of concrete

Type

journal article in Web of Science

Language

English

Original Abstract

Selecting the correct objective function is the critical precondition for a successful optimization task. The validity of this condition is also required when optimization algorithms are needed for the inverse identification of the unknown parameters of nonlinear material models of concrete, where experimentally measured load-displacement curves can be conveniently applied. In such cases, the objective function expressions can be formulated as the difference between the functional values of the curves or via comparing the characteristic features, which comprise the area under the curve and also the maximum functional value. The proposed article brings a study of the influence of the different formulations of the objectives functions to achieving optimum in the inverse analysis using genetic algorithm. The numerical part of the study was performed in the ANSYS computational system with use of multiPlas library of elasto-plastic material models from which the model based on formulations of Menetrey and Willam was chosen.

Keywords

Identification; Objective function; RMSE; Optimization; Sensitivity analysis

Authors

HOKEŠ, F.; KALA, J.

Released

1. 1. 2017

Publisher

Gruppo Italiano Frattura

Location

Itálie

ISBN

1971-8993

Periodical

Frattura ed Integrita Strutturale

Year of study

11

Number

39

State

Republic of Italy

Pages from

7

Pages to

16

Pages count

10

URL

https://www.fracturae.com/index.php/fis/article/view/IGF-ESIS.39.02

BibTex

@article{BUT164215,
  author="Filip {Hokeš} and Jiří {Kala}",
  title="Selecting the objective function during the inverse identification of the parameters of a material model of concrete",
  journal="Frattura ed Integrita Strutturale",
  year="2017",
  volume="11",
  number="39",
  pages="7--16",
  doi="10.3221/IGF-ESIS.39.02",
  issn="1971-8993",
  url="https://www.fracturae.com/index.php/fis/article/view/IGF-ESIS.39.02"
}