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دوره 18، شماره 37 - ( 12-1401 )
جلد 18 شماره 37 صفحات 41-28 |
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Izadi A, Esfandiari A. FEM Updating of Ship Structure by The Sensitivity Equation of Transmissibility Function. Marine Engineering 2023; 18 (37) :28-41
URL: http://marine-eng.ir/article-1-1011-fa.html
URL: http://marine-eng.ir/article-1-1011-fa.html
ایزدی احمد، اسفندیاری اکبر. بهنگام رسانی مدل سازه بدنه شناور بوسیله معادله حساسیت تابع انتقال پذیری. مهندسی دریا. 1401; 18 (37) :28-41
احمد ایزدی1 
، اکبر اسفندیاری* 1
، اکبر اسفندیاری* 1
1- دانشگاه صنعتی امیرکبیر
چکیده: (1277 مشاهده)
این مطالعه یک رویکرد جدید بهنگام رسانی مدل اجزاء محدود مبتنی بر حساسیت را برای تخمین پارامترهای سازه ای با استفاده از داده های مبتنی بر خروجی ارائه نموده و یک معادله حساسیت شبه دقیق بر اساس داده های تابع انتقال پذیری را معرفی می نماید. پاسخ‌های سازهای اندازه‌گیری‌شده سازه آسیب دیده برای بهبود دقت معادله حساسیت در روابط ریاضی گنجانده شدهاند. برای بهبود نتایج تخمین پارامتر، مجموعه معادلات حساسیت نرمال شده، با الگوریتم حداقل مربعات حل شدهاند. عملکرد روش پیشنهادی، بر اساس داده‌های عددی مدل پوسته بدنه یک شناور ارزیابی میشود. از رویکردهای مناسب برای انتخاب نقاط تحریک و جایگذاری بهینه حسگر استفاده شده است. پایداری روش پیشنهادی در برابر خطاهای اندازه‌گیری و مدل‌سازی جرم، و ناقص بودن پاسخ‌های اندازه‌گیری شده، مورد مطالعه قرار می‌گیرد.
واژه‌های کلیدی: شناسایی خرابی، بهنگام رسانی مدل اجزاء محدود، داده‌های مبتنی بر خروجی، تابع انتقال پذیری، معادله حساسیت شبه دقیق
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