Abstract
The classically lattice model assumes the local elements behave elastic brittle, neglecting the ductility of the mortar matrix. This leads to the simulated load⁃displacement response more brittle than the realistic. To solve the aforementioned issue, a piece⁃wise approach was introduced to describe the elastic⁃plastic constitutive relation of lattice element. The fracture process and the load⁃displacement response were obtained through the sequentially⁃linear solution approach. The model was calibrated using the uniaxial tension and compression tests. It is found that the model can precisely simulate the fracture process and load⁃displacement response. Moreover, the model was used to model the size effect in uniaxial tension and the influence of the specimen’s slenderness and boundary confinement on the fracture behavior under compression. It offers a new theoretical method and approach for studying the fracture of concrete.
| Translated title of the contribution | Fracture Modelling of Concrete at Meso-scale Using Piece-wise Based Elastic-Plastic Lattice Model |
|---|---|
| Original language | Chinese |
| Article number | 21100198 |
| Number of pages | 7 |
| Journal | Cailiao Daobao/Materials Reports |
| Volume | 37 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2023 |
Bibliographical note
Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-careOtherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.
Keywords
- concrete
- elastic⁃plastic constitutive relation
- fracture process
- lattice model
- meso⁃scale