CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

Simulation of inelastic deformation in road structures due to cyclic mechanical and thermal loads

Per Kettil (Institutionen för tillämpad mekanik, Material- och beräkningsmekanik) ; Bernd Lenhof (Institutionen för tillämpad mekanik, Material- och beräkningsmekanik) ; Kenneth Runesson (Institutionen för tillämpad mekanik, Material- och beräkningsmekanik) ; Nils-Erik Wiberg (Institutionen för tillämpad mekanik, Material- och beräkningsmekanik)
Computers & Structures Vol. 85 (2007), p. 59-70.
[Artikel, refereegranskad vetenskaplig]

The paper presents modeling and simulation of inelastic deformation in road structures leading to rutting. Two material models, one for asphalt-concrete and another for unbound materials, have been calibrated to laboratory test data. The models account for the time and temperature dependent deformation of the asphalt-concrete as well as the friction and cyclic compaction of the unbound layers. The models have been used in simulations of a complete road structure exposed to cyclic mechanical and thermal loads. The simulation results are qualitatively similar to the rutting observed in reality. The simulations can either trace the complete history of the individual load cycles, or can be performed to directly obtain the accumulated effect after a certain number of load cycles. This makes it possible to get quickly the result due to a large number of loadings as desired in engineering design practice.

Nyckelord: road, asphalt, sand, cyclic, creep, plasticity, temperature, FEM



Denna post skapades 2006-08-11. Senast ändrad 2015-06-12.
CPL Pubid: 22063

 

Institutioner (Chalmers)

Institutionen för tillämpad mekanik, Material- och beräkningsmekanik

Ämnesområden

Annan samhällsbyggnadsteknik

Chalmers infrastruktur