مهندسی ساخت و تولید ایران

مهندسی ساخت و تولید ایران

مطالعه اثر افزودن فوم پلی‌یورتان بر قابلیت جذب انرژی لوله‌های هیبریدی با ضخامت‌های مختلف لایه کامپوزیتی

نوع مقاله : مقاله پژوهشی

نویسندگان
1 استادیار، دانشکده مهندسی مکانیک، دانشگاه صنعتی قم، قم، ایران
2 استادیار، دانشکده مهندسی مکانیک، دانشگاه کاشان، کاشان، ایران
3 استادیار، گروه مهندسی مواد و متالورژی، دانشگاه فنی و حرفه‌ای، تهران، ایران
چکیده
در این مقاله به بررسی نحوه تاثیر افزودن پرکننده فومی بر قابلیت جذب انرژی لوله­ های هیبریدی با ضخامت ­های مختلف لایه کامپوزیتی پرداخته شده است. برای این منظور 10 لوله هیبریدی از نوع آلومینیوم/الیاف شیشه بافته شده/رزین پلی‌استر با 5 ضخامت مختلف لایه کامپوزیتی بین 0 تا 75/1 میلیمتر با فرایند لایه­ چینی دستی بر روی لوله آلومینیومی به قطر بیرونی 42 میلی­ متر و ضخامت 1 میلی­ متر، تولید شد و 5 مورد از آن ­ها با فوم پلی­ یورتان با چگالی آزاد 40 کیلوگرم بر مترمکعب پر شدند. در ادامه این نمونه­ ها با استفاده از یک دستگاه تست فشار یونیورسال، تحت آزمون فشار محوری شبه‌استاتیکی با نرخ جابه­ جایی 10 میلی­متر بر دقیقه تا لهیدگی کامل قرار گرفتند و میزان جذب انرژی ویژه، بهره­ وری نیروی لهیدگی و شکل مود لهیدگی هر کدام از آن­ ها استخراج شد. نتایج حاصل نشان می­ دهد که در ضخامت ­های پایین لایه کامپوزیتی، افزودن فوم پلی­ یورتان موجب بهبود موثر جذب انرژی ویژه و بهره ­وری نیروی لهیدگی لوله هیبریدی می‌شود، با این وجود، در ضخامت ­های بالای لایه کامپوزیتی این روند مثبت از بین رفته و حتی تاثیر فوم بر قابلیت جذب انرژی ویژه منفی می­ گردد.
کلیدواژه‌ها

عنوان مقاله English

Investigating the effect of polyurethane foam filling on the energy absorption of hybrid tubes with different thickness of composite layer

نویسندگان English

Vahid Zal 1
Hossein Talebi-Ghadikolaee 2
Sadegh Mirzamohammadi 3
1 Assistant Professor, Department of Mechanical Engineering, Qom University of Technology, Qom, Iran
2 Assistant Professor, Faculty of Mechanical Engineering, University of Kashan, Kashan, Iran
3 Assistant Professor, Department of Materials and Metallurgical Engineering, Technical and Vocational University (TVU), Tehran, Iran
چکیده English

In this article, the effect of filling foam on the energy absorption capability of hybrid tubes with different thicknesses of the composite layer has been investigated experimentally. For this purpose, 10 aluminum/woven glass fiber/polyester resin hybrid tubes with 5 different thicknesses of the composite layer between 0 and 1.75 mm were produced by manual tape winding on an aluminum tube with an outer diameter of 42 mm and a thickness of 1 mm, then, 5 of these tubes were filled with polyurethane foam with free density of 40 kg/m3. Afterwards, the hybrid tubes were subjected to the quasi-static axial compression test using a universal pressure testing machine with a constant displacement rate of 10 mm/min until their complete crushing, and the specific energy absorption, crushing force efficiency, and crushing mode shapes were extracted for each tube. The results show that in the low thicknesses of the composite layers, filling the tubes with polyurethane foam effectively improves the specific energy absorption and the crushing force efficiency. However, the role of the foam becomes less effective and even negative in the high thicknesses of the composite layers.

کلیدواژه‌ها English

Energy Absorption
Quasi-Static Compression
Hybrid Tubes
Composite
Polyurethane Foam
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