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Comparative Numerical Assessment of Blast Resistance of Steel, Steel–Concrete Composite, and Fiber Metal Laminate Roofs | ||
| Civil Engineering and Applied Solutions | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 28 اردیبهشت 1405 | ||
| نوع مقاله: Original Article | ||
| شناسه دیجیتال (DOI): 10.22080/ceas.2026.31139.1075 | ||
| نویسندگان | ||
| Muhamed Shaaebanlu* 1؛ MohammadJavad Shabani2؛ Mojtaba Araghizadeh2؛ Hadi Zakeri Khatir2 | ||
| 1Departmrnt of Civil Engineering, Shahid Beheshti University, Tehran, Iran. | ||
| 2Faculty of passive defense, Malek Ashtar university of Technology, Tehran, Iran | ||
| تاریخ دریافت: 08 بهمن 1404، تاریخ بازنگری: 29 بهمن 1404، تاریخ پذیرش: 22 اردیبهشت 1405 | ||
| چکیده | ||
| Blast loading poses a serious threat to building roof systems due to their relatively low mass and stiffness compared to vertical structural components. This study presents a comprehensive numerical investigation of the blast response of three different roof systems: steel plate deck (SPD), steel–concrete composite deck (SCD), and fiber metal laminate (FML) composed of two steel sheets with intermediate CFRP layers oriented at 0° and 90°. Finite element models were developed in Abaqus to simulate both near-field and far-field blast scenarios using equivalent TNT charges with various stand-off distances and charge weights. A detailed parametric study was conducted to evaluate the influence of key design parameters including material thickness, explosive weight, and stand-off distance on the maximum von Mises stress. The results demonstrate that the stand-off distance is the governing parameter controlling the structural response under blast loading. The steel–concrete composite system exhibited the most stable performance due to the combined effects of increased mass, energy absorption, and composite action, while the steel plate deck showed significant plastic deformation under close-in explosions. The FML system provided excellent performance at moderate and large stand-off distances; however, it was highly sensitive to near-field blasts due to the brittle failure characteristics of CFRP layers. Furthermore, blast design charts based on scaled distance were developed and power-law relationships were proposed to enable rapid estimation of maximum stress for preliminary design purposes. The findings provide practical insights for selecting and designing roof systems with improved blast resistance. | ||
| کلیدواژهها | ||
| Blast loading؛ Roof systems؛ Steel plate deck؛ Steel–concrete composite؛ Fiber metal laminate؛ CFRP. | ||
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آمار تعداد مشاهده مقاله: 4 |
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