مروری بر روش‌های مدل‌سازی اتصالات پیچی در تحلیل‌های ارتعاشی

نوع مقاله : علمی ترویجی

نویسندگان

دانشگاه صنعتی مالک اشتر

چکیده

مدل‌سازی دقیق برای پیش‌بینی رفتار دینامیکی سازه‌ها یک ابزار ضروری در هر دو مرحله طراحی و عملیات است. مدل‌سازی خواص اتصال مشکل بزرگی در تحلیل‌های ارتعاشی بوده و یکی از موانع کلیدی برای پیش‌بینی دینامیک سازه‌‌ها، عدم توانایی برای دخیل کردن اثر اتصالات مکانیکی بر روی پاسخ‌های سازه‌ای است. هدف از این مقاله بررسی و مطالعه روش‌های مختلف مدل‌سازی اتصالات مکانیکی جهت استفاده در تحلیل‌های ارتعاشی است. در این راستا تلاش‌های محققین مختلف در خلال‌ سال‌های گذشته مرور شده است. عملکرد و کارآیی هر روش‌ به همراه نقاط ضعف و قوت مورد بررسی و بحث قرار گرفته است تا جایگاه و پتانسیل هر یک جهت استفاده در سازه‌های بزرگ صنعتی مورد ارزیابی قرار گیرد. با ارزیابی روش‌های مرسوم برای مدل‌سازی اتصالات، این نتیجه حاصل گردید که روش‌های مدل‌سازی سطوح نقطه-به-نقطه نظیر المان‌های فنر پتانسیل استفاده در سازه‌های بزرگ را ندارند و باید به سمت روش‌های مدل‌‌سازی پیوسته سطح‌-به-سطح با دیدگاه ماکرو نظیر لایه واسط و لایه رابط رفت.

کلیدواژه‌ها

موضوعات


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 ﺑﺮایﺑﻪ روزرﺳﺎﻧﻣﺪلاﻟﻤﺎنﻣﺤﺪوداﺗﺼﺎﻻتﭘﯿﭽوﻣﻘﺎﯾﺴﻪﮐﺎرآﯾﯽ آنﺑﺎروﯾﺮدﻻﯾﻪواﺳﻂ،ﻣﺠﻠﻪﻣﻬﻨﺪﺳﻣﺎﻧﯿﻣﺪرس.دوره۶١، ﺷﻤﺎره٣،ص ص ۵٣ ‐ ٢۴،ﺧﺮداد۵٩٣١ . ف.ﻋﺎدل، ﺑﻪروزرﺳﺎﻧﻣﺪلاﻟﻤﺎنﻣﺤﺪودﯾﺳﺎزهﻫﻮاﻓﻀﺎﯾﯽ [١١٩]
 ﺑﺎاﺳﺘﻔﺎدهازﻧﺘﺎﯾﺞﺗﺴﺖﻣﻮدال. ررﺳﺎﻟﻪدﮐﺘﺮیﻣﻬﻨﺪﺳﻫﻮاﻓﻀﺎ، ﻣﺠﺘﻤﻊداﻧﺸﺎﻫﻫﻮاﻓﻀﺎ،داﻧﺸﺎهﺻﻨﻌﺘﻣﺎﻟاﺷﺘﺮ،آﺑﺎن۵٩٣١ .
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[١٢٢] اﻟﻤﺎنﻣﺤﺪودﺳﺎزه ﻫﺎیﺑﺰرگﻫﻮاﯾﯽﺑﺎاﺳﺘﻔﺎدهازﯾروﯾﺮدﺳﺎده، ﺷﺎﻧﺰدﻫﻤﯿﻦ ﮐﻨﻔﺮاﻧﺲ ﺑﯿﻦ اﻟﻤﻠﻠ اﻧﺠﻤﻦ ﻫﻮاﻓﻀﺎی اﯾﺮان، ﺗﻬﺮان، داﻧﺸﺎهﺻﻨﻌﺘﺧﻮاﺟﻪﻧﺼﯿﺮاﻟﺪﯾﻦﻃﻮﺳ. ٣‐ ۵اﺳﻔﻨﺪ۵٩٣١