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بررسی رفتار نفوذ در اهداف تک و چندلایه فلزی تحت ضربه پرتابه | ||
نشریه مهندسی مکانیک امیرکبیر | ||
مقاله 15، دوره 53، شماره 4، تیر 1400، صفحه 2309-2330 اصل مقاله (1.31 M) | ||
نوع مقاله: مقاله پژوهشی | ||
شناسه دیجیتال (DOI): 10.22060/mej.2020.17871.6678 | ||
نویسندگان | ||
توحید میرزابابای مستوفی1؛ مصطفی سیاح بادخور2؛ هاشم بابایی* 3 | ||
1استادیار، دانشکده مهندسی مکانیک، دانشگاه ایوان کی، گرمسار، ایران | ||
2گروه مهندسی مکانیک، دانشگاه ایوانکی | ||
3گیلان*مهندسی مکانیک | ||
چکیده | ||
در این مقاله، به بررسی تجربی و مدلسازی رفتار نفوذ ورقهای تک لایه و چند لایه آلومینیومی، فولادی و یا ترکیبی از فولاد و آلومینیوم تحت ضربه پرتابه کروی صلب پرداختهشده است. برای انجام کارهای تجربی در قالب 66 آزمون، هشت نوع لایهبندی مختلف در نظر گرفته شد و نمونهها در محدوده سرعت 42 تا 158 متر بر ثانیه تحت ضربه پرتابه قرار گرفتند. این لایهبندیها شامل ورق تک لایه آلومینیومی و فولادی باضخامت 2 و 3 میلیمتر، ساختار دولایه آلومینیومی و فولادی باضخامت کلی 2 میلیمتر، ساختار سه لایه همجنس آلومینیومی و فولادی باضخامت کلی 3 میلیمتر و ساختارهای سه لایه غیر همجنس آلومینیوم – فولاد - آلومینیوم و فولاد – آلومینیوم - فولاد باضخامت کلی 3 میلیمتر بود. در تمامی آزمایشها، سرعت برخورد پرتابه و میزان تغییر شکل پلاستیک نمونه اندازهگیری شد. در بخش مدلسازی عددی، از شبکه عصبی از نوع دستهبندی گروهی دادهها برای ارائه یک مدل ریاضی بر مبنای اعداد بیبعد جهت پیشبینی بیشترین خیز دائمی ساختارهای تک لایه و چندلایه فلزی تحت ضربه پرتابه صلب استفاده شد. نتایج بدستآمده نشان داد که توافق خوبی بین مدل ارائهشده با مقادیر تجربی برقرار است بهطوریکه 94% از نقاط در محدوده خطای کمتر از 10% قرار گرفتند. | ||
کلیدواژهها | ||
مقاومت بالستیک؛ ساختار چند لایه؛ ساختار تک لایه؛ شبکه عصبی؛ مدلسازی | ||
عنوان مقاله [English] | ||
Investigation of penetration behavior of monolithic and multi-layered metallic targets subjected to a projectile impact | ||
نویسندگان [English] | ||
Tohid Mirzababaie Mostofi1؛ Mostafa Sayah Badkhor2؛ Hashem Babaei3 | ||
1Assistant Professor, Faculty of Mechanical Engineering, University of Eyvanekey, Garmsar, Iran | ||
2Department of Mechanical Engineering, University of Eyvanekey | ||
3University of Guilan | ||
چکیده [English] | ||
In the current study, an experimental study and modeling of the penetration behavior of single-layered and multi-layered targets made of either aluminum alloy or mild steel or a combination of these materials impacted by a spherical projectile were introduced. For conducting 66 experiments, eight different layering configurations consist of monolithic aluminum and steel plates with the thickness of 2 mm and 3mm, double-layered aluminum and steel plates with a total thickness of 2 mm, triple-layered aluminum, and steel plates with the total thickness of 3 mm, and triple mixed layered plates of Aluminum-Steel-Aluminum and Steel-Aluminum-Steel configurations with the total thickness of 3 mm were considered under various impact velocities of 42 to 158 m/s. The impact velocity and maximum permanent deflection of specimens were measured in all experiments. In the numerical modeling section, the group method of data handling neural network was used to present a mathematical model based on dimensionless numbers to predict the maximum permanent deflection of monolithic and multi-layered metallic plates under the rigid projectile impact. To increase the prediction capability of the proposed neural network for this process, the experimental data were divided into two training and prediction sets. The results showed that good agreement between the proposed model and the corresponding experimental results is obtained and 94% of data points are within the ±10% error range. | ||
کلیدواژهها [English] | ||
Ballistic resistance, Multi-layered plates, Single-layered plates, Neural network, Modeling | ||
سایر فایل های مرتبط با مقاله
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مراجع | ||
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