Assessment of a Proposed Elasto-Plastic Homogenized Concrete Model for Reinforced Concrete Structures under Blast Loads

Authors : Gökçe Armağan, Ali Gürbüz
Pages : 815-824
Doi:10.53501/rteufemud.1745657
View : 40 | Download : 70
Publication Date : 2025-12-31
Article Type : Research Paper
Abstract :Accurate analysis of structures subjected to blasting is crucial for both the safe construction and controlled demolition of structures. The heterogeneous structure of reinforced concrete structures, consisting of reinforcement and concrete, poses challenges in both the modeling and numerical analysis processes of blasting analyses. This study, conducted in this context, aims to evaluate the behavior of a heterogeneous (separate concrete-reinforcement) classical reinforced concrete model (RC) and a homogenized elasto-plastic concrete model (HC) under blasting effects. Analyses were conducted using two different modeling approaches using ANSYS Workbench software. First, a blast analysis was conducted for a beam-column frame system created by modeling the concrete and reinforcement separately. Second, the analysis was repeated on the same beam-column frame system using the method that assumes the concrete and reinforcement as a single homogeneous material model. Stress values and distributions, strain values, and energy consumption for both models were compared. Furthermore, quantitative and qualitative parameters related to the modeling and analysis processes were evaluated. Due to the limited number of studies in the literature on the use and effectiveness of homogeneous material models in blast analyses, this research aimed to evaluate both model accuracy and analysis efficiency. As a result, a comparison of the stress and strain values of the models revealed a difference of 8-10%. It was determined that they yielded similar results in terms of energy values. Furthermore, the HC model significantly reduced analysis time and model complexity compared to the RC model.
Keywords : Homojen beton modeli, patlatma analizi, Expilicit Analiz, reinforced concrete modeling, Ansys Workbench

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