Numerical Analysis for Critical Structures Protection against Blast Loading Using Metallic Panels
| Autor: | Elsayed Fathallah, Mahmoud Helal, Mohamed Mokbel Elshafey, Ageel F. Alogla |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
plastic deformation
Blast load Computer science blast load 020101 civil engineering 02 engineering and technology autodyn lcsh:Technology connectors 0201 civil engineering lcsh:Chemistry Cable gland charge weight 0203 mechanical engineering Metre General Materials Science lcsh:QH301-705.5 Instrumentation Blast wave Fluid Flow and Transfer Processes lcsh:T business.industry Process Chemistry and Technology Numerical analysis General Engineering Structural engineering Masonry Protection system lcsh:QC1-999 Computer Science Applications 020303 mechanical engineering & transports front and rear plate lcsh:Biology (General) lcsh:QD1-999 lcsh:TA1-2040 Deformation (engineering) lcsh:Engineering (General). Civil engineering (General) business lcsh:Physics |
| Zdroj: | Applied Sciences, Vol 10, Iss 6, p 2121 (2020) Applied Sciences Volume 10 Issue 6 |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app10062121 |
| Popis: | The need for building protection against blast loads is a crucial issue nowadays due to the escalating threat of terrorist attacks, which affect people&rsquo s lives and critical structures. Consequently, design of protective panels to segregate building faç ades from the effect of a nearby explosion is required. Such design mainly depends on the ability of protective panels to mitigate and diffract the blast wave before reaching building faç ades. Five protective panel models with different designs, referred to as the Combined Protection System (CPS), are introduced in this paper. The main objective of this research was to achieve a design that could sustain a blast load with minimum plastic deformations. The introduced CPS designs included two steel plates linked by connector plates. The CPS dimensions were 3 m × 3 m × 0.35 m, representing length, width, and height, respectively. After that, the successful panel design was supported by placing these panels onto a masonry wall in different configurations. The protective panels were tested against 50 kg of trinitrotoluene (TNT) with a standoff distance of one meter. The final run of the optimum model was carried out using a blast load equivalent to 500 kg of TNT. The air&ndash structure interactions were simulated using finite element analysis software called &ldquo ANSYS AUTODYN&rdquo where the deformation of the panel was the governing parameter to evaluate the behavior of different designs. The analysis showed minimum deformation of the CPS design with vertical and horizontal connecting plates in a masonry wall distanced at 500 mm from the panel. However, the other designs showed promising results, which could make them suitable for critical structural protection on different scales. |
| Databáze: | OpenAIRE |
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