بررسی اثر فوم‌های پلیمری و آلومینیومی بر روی رفتار فروریزش سازه‌های مخروطی دودیواره نازک فولادی

نوع مقاله : علمی-پژوهشی

نویسندگان

1 دانش آموخته کارشناسی ارشد، پردیس علوم و فناوری‌های نوین دانشگاه سمنان، سمنان ، ایران.

2 استاد، دانشکده مهندسی، دانشگاه فردو سی مشهد،مشهد، ایران.

3 استادیار، دانشکده مهندسی مکانیک،دانشگاه سمنان، سمنان،ایران.

4 استادیار، دانشکده مهندسی مکانیک و مکاترونیک، دانشگاه صنعتی شاهرود، شاهرود، ایران

چکیده

تاکنون تأثیر فوم‌های پلیمری و آلومینیومی بر روی ظرفیت جذب انرژی پوسته‌های مخروطی دو دیواره در معرض بارگذاری فشاری مایل به صورت آزمایشگاهی گزارش نشده است. در این تحقیق تأثیر فوم پلیمری و فوم آلومینیومی بر میزان جذب انرژی این سازه‌های در معرض بارگذاری فشاری محوری و مایل نسبت به محور مرکزی جاذب‌های مخروطی، به روش تجربی مورد تحقیق و بررسی قرار گرفته‌است. همچنین، تأثیر عواملی مانند ابعاد هندسی مخروط‌ها و فاصله بین دیواره‌های مخروط دو دیواره بر روی ظرفیت جذب انرژی این جاذب‌های انرژی مطالعه و بررسی شده است. نتایج نشان داد که در بارگذاری محوری کم کردن فاصله بین دو دیواره تأثیر چندانی در بازده جاذب ندارد ولی افزودن فوم موجب افزایش ظرفیت جذب انرژی جاذب بدون تغییر در بیشینه نیروی قابل تحمل آن می‌شود. در بارگذاری‌های مایل که در زاویه 45 درجه انجام شدند نیز کم کردن فاصله بین دیواره‌‌‌‌‌ها و افزودن فوم باعث افزایش ظرفیت جذب انرژی می‌شود. ‌‌

کلیدواژه‌ها

موضوعات


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