طراحی و ساخت کانال‌های محافظ سیلندری شکل موج‌دار برای استفاده در سازه‌های هوافضایی

قادری دهکردی, یوسف

طراحی و ساخت کانال‌های محافظ سیلندری شکل موج‌دار برای استفاده در سازه‌های هوافضایی

نویسنده

یوسف قادری دهکردی

چکیده

کانال‌های محافظ موج‌دار، لوله‌هایی هستند که ساختار هندسی آنها به صورت موج‌دار است و برای انتقال سیال در صنایع مختلف استفاده می‌شوند. با توجه به ساختار هندسی پیچیدة آنها، روابط تحلیلی بسیار محدودی برای بررسی رفتار مکانیکی آنها ارائه شده است. در این مقاله ابتدا، روابطی برای تحلیل استحکامی و کمانشی این کانال‌های موج‌دار تحت فشار خارجی و سپس یک الگوریتم برای طراحی این لوله‌ها تحت فشار خارجی ارائه شده است. به‌منظور صحه‌گذاری روابط تحلیلی، نتایج به‌دست آمده از روابط با نتایج حاصل از روش اجزای محدود (با استفاده از نرم‌افزار تجاری ABAQUS) مقایسه و تطابق خوبی بین نتایج مشاهده شد. چند نمونه از این کانال‌ها برای یک کاربرد خاص صنعتی، طراحی و سپس ساخته شد و عملکرد آنها در تست‌های تجربی ارزیابی گردید. فشارهای بحرانی به‌دست آمده از تست، کمتر از مقادیر به‌دست آمده از روابط هستند که می‌تواند ناشی از عیوب ساختی باشد.

کلیدواژه‌ها

کانال موج‌دار

کمانش فشاری

طراحی

تست

المان محدود

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