Publication detail

Study on Identification of Material Model Parameters from Compact Tension Test on Concrete Specimens

HOKEŠ, F. KRÁL, P. HUŠEK, M. KALA, J.

Original Title

Study on Identification of Material Model Parameters from Compact Tension Test on Concrete Specimens

Type

conference paper

Language

English

Original Abstract

Identification of a concrete material model parameters using optimization is based on a calculation of a difference between experimentally measured and numerically obtained data. Measure of the difference can be formulated via root mean squared error that is often used for determination of accuracy of a mathematical model in the field of meteorology or demography. The quality of the identified parameters is, however, determined not only by right choice of an objective function but also by the source experimental data. One of the possible way is to use load-displacement curves from three-point bending tests that were performed on concrete specimens. This option shows the significance of modulus of elasticity, tensile strength and specific fracture energy. Another possible option is to use experimental data from compact tension test. It is clear that the response in the second type of test is also dependent on the above mentioned material parameters. The question is whether the parameters identified within three-point bending test and within compact tension test will reach the same values. The presented article brings the numerical study of inverse identification of material model parameters from experimental data measured during compact tension tests. The article also presents utilization of the modified sensitivity analysis that calculates the sensitivity of the material model parameters for different parts of loading curve. The main goal of the article is to describe the process of inverse identification of parameters for plasticity-based material model of concrete and prepare data for future comparison with identified values of the material model parameters from different type of fracture tests.

Keywords

Identification, material model parameters, compact tension test

Authors

HOKEŠ, F.; KRÁL, P.; HUŠEK, M.; KALA, J.

Released

12. 6. 2017

ISBN

1757-8981

Periodical

IOP Conference Series: Materials Science and Engineering

Year of study

2017

Number

245

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

10

Pages count

10

URL

http://iopscience.iop.org/article/10.1088/1757-899X/245/3/032079/pdf

BibTex

@inproceedings{BUT146047,
  author="Filip {Hokeš} and Petr {Král} and Martin {Hušek} and Jiří {Kala}",
  title="Study on Identification of Material Model Parameters from Compact Tension Test on Concrete Specimens",
  booktitle="IOP Conf. Series: Materials Science and Engineering of World Multidisciplinary Civil Engineering - Architecture - Urban Planning Symposium 2017",
  year="2017",
  journal="IOP Conference Series: Materials Science and Engineering",
  volume="2017",
  number="245",
  pages="1--10",
  doi="10.1088/1757-899X/245/3/032079",
  issn="1757-8981",
  url="http://iopscience.iop.org/article/10.1088/1757-899X/245/3/032079/pdf"
}