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طراحی بهینه¬ی صفحه¬ی مسطح چند لایه¬ی کامپوزیتی تحت بارگذاری دینامیکی
تعداد 84 صفحه درwordطراحی بهینه¬ی صفحه¬ی مسطح چند لایه¬ی کامپوزیتی تحت بارگذاری دینامیکیکلیدواژه ها: مواد کامپوزیتی، تحلیل دینامیکی،تئوری کلاسیک ورقها، حل ناویر، الگوریتم ژنتیکی |
چکیده:موادکامپوزیتیبهدلیلمزایایفراوانیکهدارند،ازجملهمقاومتمخصوصبالا،جایگزینمناسبیبرایموادفلزیاند. مهمترینخاصیتکامپوزیتهادرمقایسهباموادفلزی،وزنکمآنهابهازاءتحملبارهایبرابراست. بنابراینوزناینسازههااهمیتفراوانیدارد. دراینپژوهشسعیشدهاستیکروشکلیبرایکمینهکردنوزنسازهیکامپوزیتیتحتباردینامیکیارائهگردد. متغیرهایدرنظرگرفتهشده،زاویهیمربوطبهجهتگیریفیبرهاوضخامتمربوطبههرکدامازآرایشهاست. مدلبهکارگرفتهشدهیکورقمربعیاستکهدورتادورتحتتکیهگاهسادهاست. تابعهدفوزنوقیدواردبرمسأله،قیدشکستاستکهازمعیارتیسای-وواستفادهشدهاست. برایبهدستآوردنقیدها،نیازبهمحاسبهیتنشهاوجابجاییهامیباشد. براییافتنتنشهاوجابجاییها،تئوریکلاسیکورقهابهکاربردهشدهاست. اینمعادلاتباحلتحلیلیناویرحلگردیدهوبایافتنتنشها،قیدواردبرمسألهبهدستمیآید. برایبهینهسازیازالگوریتمژنتیکیاستفادهشدهاست. برایاعتبارسنجیحلمعادلات،جوابهایبهدستآمدهباجوابهایردیمقایسهمیشود. برایبررسیصحتکارالگوریتمژنتیکی،ازتابعتستاستفادهگردیدهاست. |
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