An approach for modelling concrete spalling in finite strains

作者：Majorana C E; Salomoni V A^*; Mazzucco G; Khoury G A

来源：Mathematics and Computers in Simulation, 2010, 80(8): 1694-1712.

DOI：10.1016/j.matcom.2009.05.011

• Concrete spatting
• Micro-structural modelling
• Finite strains

A new approach for modelling concrete spalling process is here proposed, taking into account a fully nonlinear-displacement/strain theory able to catch complex interactions between pressure, thermal and mechanical fields. The micro-structural modelling of concrete under fire conditions is derived from a mechanical and thermodynamic consistent theory and it is strictly related to a self-consistent, carefully extracted set of experimental data, in order to make a correct validation and calibration of the numerical F.E. procedures and codes. Even if appearing as a first but successful example, it is shown that a procedure accounting for coupled material and geometric nonlinearities is able to attain valuable and realistic numerical results concerning spalling process in concrete.

• 出版日期2010-4