Relaxation time in CDP model used for analyses of RC structures
Authors:
- Michał Szczecina,
- Andrzej Winnicki
Abstract
Concrete damaged plasticity (CDP) model is one of the most popular material models for plain and reinforced concrete implemented in Abaqus software. It is theoretically described by Lubliner et al. and Lee and Fenves. Use of this model requires values of some material constants. The choice of proper values of these constants is still an opened scientific issue and should be discussed. The article discusses a very important CDP parameter, namely relaxation time (for viscoplastic regularization) with respect to loading time. It is proven that too high value of relaxation time or too small loading time can lead to an overestimation of tensile strength of concrete. The analysis of this problem is performed in Abaqus in a tension test similar to laboratory tests by Woliński. The correctness of the calibrated CDP parameters is then checked in Abaqus for an element in complex stress state, namely for reinforced concrete frame corner under opening bending moment. The analyzed corner has different reinforcement details and different section heights of elements joining in it. Both SLS and ULS are checked and the propagation and width of cracks is recreated. Moreover, authors of this paper checked a relationship between reinforcement ratio and corner efficiency factor and then compared it with results presented by McGregor and Campana et al.
- Record ID
- CUT8eab13fc68de47e4804b62ece20edf19
- Publication categories
- ; ;
- Author
- Journal series
- Procedia Engineering, ISSN 1877-7058
- Issue year
- 2017
- Vol
- 193
- Pages
- 369-376
- Other elements of collation
- rys.; wykr.; Bibliografia (na s.) - 376; Bibliografia (liczba pozycji) - 17; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 193
- Conference
- International Conference on Analytical Models and New Concepts in Concrete and Masonry Structures AMCM’2017, 2017, 05-06-2017 - 07-06-2017, Gliwice, Polska
- Keywords in English
- concrete damaged plasticity, calibration, Abaqus, finite element method
- DOI
- DOI:10.1016/j.proeng.2017.06.226 Opening in a new tab
- URL
- https://www.sciencedirect.com/science/article/pii/S187770581732790X Opening in a new tab
- Language
- eng (en) English
- License
- Score (nominal)
- 15
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT8eab13fc68de47e4804b62ece20edf19/
- URN
urn:pkr-prod:CUT8eab13fc68de47e4804b62ece20edf19
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.