آسیب‌یابی در سازه تیر فولادی مبتنی بر مقایسه نتایج تحلیلی آنالیز موجک | ||
| پژوهش های زیرساخت های عمرانی | ||
| دوره 8، شماره 2 - شماره پیاپی 15، اسفند 1401، صفحه 173-183 اصل مقاله (617.18 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22091/cer.2022.8340.1407 | ||
| نویسندگان | ||
| محتشم خان احمدی1؛ مجید قلهکی* 2؛ امید رضایی فر2؛ بهزاد دژکام3 | ||
| 1دانشجوی دکتری سازه، دانشکده مهندسی عمران، دانشگاه کردستان، سنندج، ایران | ||
| 2استاد، دانشکده مهندسی عمران، دانشگاه سمنان، سمنان، ایران | ||
| 3هیئت علمی گروه مهندسی عمران، دانشکده مهندسی، دانشگاه ولایت، ایرانشهر، ایران | ||
| چکیده | ||
| پایش سلامت سازه‌ها با هدف تأمین ایمنی و کاهش هزینه‌های نگهداری مورد توجه بسیاری از پژوهشگران است. تیرها و ستون‌ها از اعضای اصلی سازه‌های مهندسی عمران هستند و طراحان انتظار دارند آخرین اعضای آسیب‌دیده سازه‌ها از تیرها و ستون‌ها باشد. در این مقاله به شناسایی آسیب تیر فولادی بر اساس داده‌های دینامیکی مودال پرداخته شده است. پس از انجام آنالیز مودال تیر مدل‌سازی شده در نرم افزار اجزا محدود ABAQUS اطلاعات مودال شامل فرکانس‌ها و شکل‌های مود سالم و آسیب استخراج شد. تفاوت در مقادیر فرکانس وضعیت‌های اولیه و ثانویه به دلیل وجود آسیب مشاهده گردید. همچنین، مقادیر معیار همبستگی مودال (MAC) کمتر از 1 به دست آمد که تائیدی بر وجود آسیب است. پردازش سیگنالهای شکل مود سالم و معیوب با استفاده از روش تحلیلی آنالیز موجک در محیط نرم افزار MATLAB.R2021a انجام شد. در تمامی مودها مقایسه بین نمودار سیگنالهای خروجی وضعیت‌های سالم و آسیب تفاوت را در منطقه آسیب نشان می‌دهد به نحوی که با یک بررسی ساده می‌توان موقعیت‌های آسیب را با خطای کمتر از 2% شناسایی نمود. | ||
| کلیدواژه‌ها | ||
| "پایش سلامت سازه"؛ "تحلیل مودال"؛ "پردازش سیگنال"؛ "تبدیل موجک"؛ "شناسایی آسیب" | ||
| عنوان مقاله [English] | ||
| Damage Identification in Steel Beam Structures Based on the Comparison of Analytical Results of Wavelet Analysis | ||
| نویسندگان [English] | ||
| Mohtasham Khanahmadi1؛ Majid Gholhaki2؛ Omid Rezaifar2؛ Behzad Dejkam3 | ||
| 1Ph.D. Student of Structural Engineering, Faculty of Civil Engineering, University of Kurdistan, Sanandaj, Iran | ||
| 2Professor, Faculty of Civil Engineering, Semnan University, Semnan, Iran | ||
| 3Department of Civil Engineering, Faculty of Engineering, Velayat University, Iranshahr, Iran | ||
| چکیده [English] | ||
| Numerous researchers focus on monitoring the health of structures to ensure safety and reduce maintenance costs. Beams and columns are the primary elements of structures in civil engineering, and designers expect beams and columns to be the last elements to experience damage. This paper identifies steel beam damage based on dynamic modal data. After a modal analysis was performed on the modeled beam using the ABAQUS finite element software, modal information was extracted, including the frequencies and shapes of healthy and damaged modes. Due to the presence of damage, differences in the frequency values of primary and secondary conditions were observed. In addition, modal assurance criteria (MAC) values below one were obtained, confirming the presence of damage. Using an analytical method based on wavelet analysis, MATLAB.R2021a processed healthy and damaged mode shape signals. In all modes, a comparison of the output signal diagrams of healthy and damaged modes revealed the difference in the damaged area, allowing the damage locations to be identified with an error of less than 2 percent using a simple examination. | ||
| کلیدواژه‌ها [English] | ||
| "Structural Health Monitoring", "Modal Analysis", "Signal Processing", "Wavelet Transform", "Damage Identification" | ||
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سایر فایل های مرتبط با مقاله
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| مراجع | ||
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