3D NUMERICAL SIMULATIONS OF SHOCK WAVE PROPAGATION DUE TO BLAST LOAD AND COMPARING THE RESULTS BETWEEN EMPERICAL AND FINITE ELEMENT METHODS | ||
| Journal of Al-Azhar University Engineering Sector | ||
| Articles in Press, Corrected Proof, Available Online from 23 October 2025 PDF (675.35 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/auej.2025.378588.1825 | ||
| Authors | ||
| Essam El Sayed Khalifa Mahran1; Khaled Farouk Mohamed Salem* 2; Adel Abd Al Salam2 | ||
| 1Civil Engineering Department, Faculty of Engineering, Azhar University, Cairo, Egypt | ||
| 2Civil Engineering, Faculty of Engineering, Zagazig University, Cairo, Egypt | ||
| Abstract | ||
| Explosions near buildings can cause severe damage to both the building structure and its occupants. To mitigate these risks, efforts have been made to evaluate explosion-generated pressure loads and the structural response. While experiments on explosions are costly, dangerous, and time-consuming, simulation using finite element analysis (FEA) software, like ABAQUS, offers a safer and more efficient alternative. UFC 3-340-02 (2008) provides guidelines for evaluating these pressures, but it is limited and not applicable to complex buildings. This gap has led to studies using the finite element method to simulate explosions and determine design pressure values for buildings in various locations. In this study, UFC 3-340-02 and ABAQUS software were used to compare the peak overpressure on building sides through 3D numerical simulations. The results showed that the peak overpressure differences between UFC and ABAQUS methods ranged from -15% to 14% for different building sides. Since UFC results are based on empirical data, their validity is unquestioned, while discrepancies may arise from numerical modeling, especially in tensile elements. Additionally, ABAQUS does not account for the negative phase of the pressure-time relation, which could explain some of the observed differences. Despite these variations, the study confirmed the general convergence of results, indicating the validity of the ABAQUS solution for the positive phase of pressure. Further research should focus on refining mesh density and investigating potential sources of inaccuracies. | ||
| Keywords | ||
| Numerical Simulation of Blast Action; Blast wave propagation; Peak Positive Pressure | ||
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