کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7180458 1467836 2018 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A generally modified cuckoo optimization algorithm for crack detection in cantilever Euler-Bernoulli beams
ترجمه فارسی عنوان
یک الگوریتم بهینه سازی کوکو به طور کلی برای تشخیص ترک در کانال های پرتوهای اویلر-برنولی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
چکیده انگلیسی
In this research, a new and Generally Modified Cuckoo Optimization Algorithm (GMCOA) for solving the problem of detecting and estimating open-edge cracks in cantilever Euler-Bernoulli beams is proposed. This method is generated via applying general changes to Cuckoo Optimization Algorithm (COA) and improving its performance. The performance of this algorithm is investigated by performing simulation tests on a cantilever beam. Frequency response equations of a cracked beam is modelled using Euler-Bernoulli beam method and Hamilton's principle and its results are verified via modal tests on a sample beam. Tuning parameters of this optimization procedure is determined using Taguchi design of experiments method. An objective function consisting of the difference between measured and calculated first to fourth bending natural frequencies of the cracked beam is considered for optimization. Analyzing and comparing the results obtained using this method and the results of previous researches shows a better performance for this method. This method, in addition to estimating crack depth and location more accurately than other methods, achieves this accuracy with lower number of Function Evaluations (FEs). By using this number of FEs, other methods have not found crack location and depth more accurately than this method.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Precision Engineering - Volume 52, April 2018, Pages 227-241
نویسندگان
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