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Elastic-Plastic Model of Concrete Damage and Its Main Design Parameters
https://orcid.org/http://orcid.org/0000-0002-6850-4841
https://orcid.org/http://orcid.org/0000-0002-0326-1957
https://orcid.org/http://orcid.org/0000-0002-7187-5635
The article considers the damage rate of concrete and its main design parameters using an elastic-plastic model. The main dependencies that determine the operation of the model are given. An example of an approximation is given, which allows us to take into account quite accurately the shape of the curve of the dependence of damage d on deformations ε. The dependences of voltage on deformations are obtained, based on the results of calculations with different values of viscosity, which are compared with the original deformation diagram, which is set as parameters of the material model. An approach is proposed to construct a calculated diagram of concrete deformation under voltage, taking into account the descending branch, based on the concrete parameters presented in regulatory documents, and with a known value of the specific energy of destruction. Based on the analysis of the results of computational studies conducted using various sets of parameters of the nonlinear concrete model, the effect of taking into account the descending branch of the voltage strain diagram, as well as changes in the specific fracture energy and the angle of dilation of concrete on the voltage state of the structure at sufficiently large load values is shown.
Elastic-Plastic Model of Concrete Damage and Its Main Design Parameters
https://orcid.org/http://orcid.org/0000-0002-6850-4841
https://orcid.org/http://orcid.org/0000-0002-0326-1957
https://orcid.org/http://orcid.org/0000-0002-7187-5635
The article considers the damage rate of concrete and its main design parameters using an elastic-plastic model. The main dependencies that determine the operation of the model are given. An example of an approximation is given, which allows us to take into account quite accurately the shape of the curve of the dependence of damage d on deformations ε. The dependences of voltage on deformations are obtained, based on the results of calculations with different values of viscosity, which are compared with the original deformation diagram, which is set as parameters of the material model. An approach is proposed to construct a calculated diagram of concrete deformation under voltage, taking into account the descending branch, based on the concrete parameters presented in regulatory documents, and with a known value of the specific energy of destruction. Based on the analysis of the results of computational studies conducted using various sets of parameters of the nonlinear concrete model, the effect of taking into account the descending branch of the voltage strain diagram, as well as changes in the specific fracture energy and the angle of dilation of concrete on the voltage state of the structure at sufficiently large load values is shown.
Elastic-Plastic Model of Concrete Damage and Its Main Design Parameters
https://orcid.org/http://orcid.org/0000-0002-6850-4841
https://orcid.org/http://orcid.org/0000-0002-0326-1957
https://orcid.org/http://orcid.org/0000-0002-7187-5635
The article considers the damage rate of concrete and its main design parameters using an elastic-plastic model. The main dependencies that determine the operation of the model are given. An example of an approximation is given, which allows us to take into account quite accurately the shape of the curve of the dependence of damage d on deformations ε. The dependences of voltage on deformations are obtained, based on the results of calculations with different values of viscosity, which are compared with the original deformation diagram, which is set as parameters of the material model. An approach is proposed to construct a calculated diagram of concrete deformation under voltage, taking into account the descending branch, based on the concrete parameters presented in regulatory documents, and with a known value of the specific energy of destruction. Based on the analysis of the results of computational studies conducted using various sets of parameters of the nonlinear concrete model, the effect of taking into account the descending branch of the voltage strain diagram, as well as changes in the specific fracture energy and the angle of dilation of concrete on the voltage state of the structure at sufficiently large load values is shown.
Elastic-Plastic Model of Concrete Damage and Its Main Design Parameters
Lecture Notes in Civil Engineering
Klyuev, Sergey Vasil'yevich (editor) / Klyuev, Alexander Vasil'yevich (editor) / Balamirzoev, A. G. (author) / Abdullaev, A. R. (author) / Selimkhanov, D. N. (author)
Environmental and Construction Engineering: Reality and the Future ; Chapter: 6 ; 37-44
2021-06-07
8 pages
Article/Chapter (Book)
Electronic Resource
English
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