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Progressive Fracture Analysis of Reinforced Concrete Structures by Discrete Element Methods

In this paper, a numerical model of reinforced concrete structure based on a combined finite discrete element method has been proposed. Using this approach, it is possible to model various phenomena such as projectile impact and penetration, progressive cracking, strain softening of concrete and contact features of post cracking. Rankine failure criterion has been used for concrete. The behavior of cracked parts is governed by principles of the discrete element method and contact mechanics. The discrete element method idealizes the whole medium into an assemblage of individual bodies, which in addition to their own deformable response, interact with each other (through a contact type interaction) to perform the same response as the medium. Finally, several concrete and reinforced concrete structures have been simulated and compared with experimental results.