Publication detail

Evaluation of constitutive relations for concrete modeling based on an incremental theory of elastic strain-hardening plasticity

KRÁL, P. HRADIL, P. KALA, J.

Original Title

Evaluation of constitutive relations for concrete modeling based on an incremental theory of elastic strain-hardening plasticity

Type

journal article in Web of Science

Language

English

Original Abstract

Today, the modeling of concrete as a material within finite element simulations is predominantly done through nonlinear material models of concrete. In current sophisticated computational systems, there are a number of complex concrete material models which are based on theory of plasticity, damage mechanics, linear or nonlinear fracture mechanics or combinations of those theories. These models often include very complex constitutive relations which are suitable for the modeling of practically any continuum mechanics tasks. However, the usability of these models is very often limited by their parameters, whose values must be defined for the proper realization of appropriate constitutive relations. Determination of the material parameter values is very complicated in most material models. This is mainly due to the non-physical nature of most parameters, and also the large number of them that are frequently involved. In such cases, the designer cannot make practical use of the models without having to employ the complex inverse parameter identification process. In continuum mechanics, however, there are also constitutive relations that require the definition of a relatively small number of parameters which are predominantly of a physical nature and which describe the behavior of concrete very well within a particular task. This paper presents an example of such constitutive relations which have the potential for implementation and application in finite element systems. Specifically, constitutive relations for modeling the plane stress state of concrete are presented and subsequently tested and evaluated in this paper. The relations are based on the incremental theory of elastic strain-hardening plasticity in which a non-associated flow rule is used. The calculation result for the case of concrete under uniaxial compression is compared with the experimental data for the purpose of the validation of the constitutive relations used.

Keywords

constitutive relations; elastic strain-hardening plasticity; non-associated flow rule; concrete; yield surface; stress-strain curve

Authors

KRÁL, P.; HRADIL, P.; KALA, J.

Released

1. 8. 2018

Location

SOUTH KOREA

ISBN

1598-818X

Periodical

Computers and Concrete

Year of study

22

Number

2

State

Republic of Korea

Pages from

227

Pages to

237

Pages count

11

URL

https://www.scopus.com/record/display.uri?eid=2-s2.0-85052623476&origin=inward&txGid=af1bdc2e1b0f922e50ee0077e218b243

BibTex

@article{BUT156388,
  author="Petr {Král} and Petr {Hradil} and Jiří {Kala}",
  title="Evaluation of constitutive relations for concrete modeling based on an incremental theory of elastic strain-hardening plasticity",
  journal="Computers and Concrete",
  year="2018",
  volume="22",
  number="2",
  pages="227--237",
  doi="10.12989/cac.2018.22.2.227",
  issn="1598-818X",
  url="https://www.scopus.com/record/display.uri?eid=2-s2.0-85052623476&origin=inward&txGid=af1bdc2e1b0f922e50ee0077e218b243"
}