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مدلسازی و مطالعه ی تجربی ساختارهای جدارنازک شش ضلعی منظم: بررسی المان های جذب انرژی در اثر بارگذاری | ||
| مدل سازی در مهندسی | ||
| دوره 23، شماره 83، دی 1404، صفحه 181-189 اصل مقاله (545.11 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22075/jme.2025.36693.2801 | ||
| نویسندگان | ||
| مهدی بینقی1؛ علی دادرسی* 1؛ محسن بینقی2 | ||
| 1گروه مهندسی مکانیک، دانشکده فنی مهندسی، دانشگاه حکیم سبزواری، سبزوار، ایران | ||
| 2گروه مهندسی مکانیک، دانشکده فنی مهندسی، دانشگاه نوشیروانی بابل، بابل، ایران | ||
| تاریخ دریافت: 04 بهمن 1403، تاریخ بازنگری: 08 اردیبهشت 1404، تاریخ پذیرش: 31 اردیبهشت 1404 | ||
| چکیده | ||
| در بسیاری از صنایع سازه‌هایی مورد پذیرش قرار می‌گیرند که پایداری مناسبی در برابر بارگذاری‌های مختلف از خود نشان می‌دهند. در نتیجه، بررسی قابلیت جذب انرژی در چنین ساختارهایی از اهمیت بالایی برخوردار است. به همین منظور، در این مقاله، قابلیت‌های جذب انرژی ساختارهای جدارنازک شش ضلعی مورد مطالعه قرار گرفته است. آزمایش تجربی و مدلسازی بر ضخامت ساختار شش ضلعی ساده و ساختار شش ضلعی بهبود یافته صورت پذیرفته است. همچنین، اثر حضور یک شش ضلعی کوچکتر درون سازه‌ها نیز مورد مطالعه قرار گرفته است. نتایج بدست آمده نشان می‌دهد که افزایش ضخامت دیواره در هر دو ساختار ساده و بهبود یافته باعث افزایش قابلیت‌های جذب انرژی می‌گردد. قابلیت جذب انرژی ویژه برای ساختار ساده با ضخامت 81/2 میلیمتر، 79/18 کیلوژول بر کیلوگرم بدست آمده است که 76/53 درصد افزایش را نسبت به ضخامت 3/0 میلیمتر نشان می‌دهد. همچنین، قابلیت‌های جذب انرژی ساختار بهبود یافته بالاتر از ساختار ساده گزارش شده است. به صورتی که مقدار جذب انرژی برای ساختار ساده و با ضخامت 3/0 میلیمتر، 1128 ژول گزارش شده است که این مقدار برای ساختار بهبود یافته و 2139 ژول محاسبه گشته است که 62/89 درصد افزایش را نشان می‌دهد. این روند افزایش در هر دو حالت ساختار ساده و بهبود یافته برای بار فروپاشی متوسط نیز گزارش شده است. نتایج این تحقیق می‌تواند مسیر جدیدی را برای طراحی جاذب‌های انرژی بهبود یافته ارایه دهد. | ||
| کلیدواژه‌ها | ||
| جذب انرژی؛ ساختار جدار نازک؛ ساختار شش ضلعی؛ مدلسازی؛ بار فروپاشی | ||
| عنوان مقاله [English] | ||
| Modeling and Experimental Study of Regular Hexagonal Thin-Walled Structures: Investigating Energy-Absorbing Elements under Loading | ||
| نویسندگان [English] | ||
| Mehdi Beynaghi1؛ Ali Dadrasi1؛ Mohsen Beynaghi2 | ||
| 1Department of Mechanical Engineering, Faculty of Engineering, Hakim Sabzevari University, Sabzevar, Iran | ||
| 2Department of Mechanical Engineering, Faculty of Engineering, Babol Noshirvani University, Babol, Iran | ||
| چکیده [English] | ||
| In many industries, structures are designed to demonstrate good stability against various loadings. Consequently, studying the energy absorption capacity of such structures is of great importance. This paper investigates the energy absorption capabilities of thin-walled hexagonal structures. Experimental tests and modeling were performed on both simple hexagonal structures and improved hexagonal structures. Additionally, the effect of a smaller hexagon inside these structures was studied. The results indicate that increasing the wall thickness in both simple and improved structures enhances their energy absorption capabilities. The specific energy absorption capacity of the simple structure with a thickness of 2.81 mm is 18.79 kJ/kg, representing a 53.76% increase compared to a thickness of 0.3 mm. The improved structure also exhibited higher energy absorption capabilities than the simple structure. The energy absorption value for the simple structure with a thickness of 0.3 mm was 1128 J, whereas it was 2139 J for the improved structure, showing a 62.89% increase. This increasing trend was also observed in both simple and improved structures for the average collapse load. The results of this research provide new insights for the design of improved energy absorbers. | ||
| کلیدواژه‌ها [English] | ||
| Energy absorption, Thin-walled structure, Hexagonal structure, Modeling, Crushing load | ||
| مراجع | ||
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