| Autor: |
Sergio Rocha, Aria Fathi, Mehran Mazari, Soheil Nazarian, Cesar Tirado |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Lecture Notes in Civil Engineering ISBN: 9783030772376 |
| DOI: |
10.1007/978-3-030-77238-3_13 |
| Popis: |
The conventional method of estimating the contact area of compaction rollers is based on simplifying assumptions such as the homogeneous and linear elastic behavior of the underlying compacted geomaterials. This study evaluates a stress-dependent approach for estimating the contact area of roller compaction considering the nonlinear behavior of compacted geomaterials. For this purpose, a finite element model was developed to simulate the roller compaction of unbound materials considering both the nonlinear behavior of geomaterials and the soil–drum interaction by means of using advanced contact algorithms. The contact area of the drum was estimated based on the stress distribution at the soil–drum interface for more representative pavement responses than those obtained from Hertzian models. The contact areas from this approach showed good agreement with those measured in the field. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
