کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6924147 1448443 2018 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optimization of a class of composite method for structural dynamics
ترجمه فارسی عنوان
بهینه سازی یک کلاس از روش کامپوزیت برای دینامیک ساختاری
کلمات کلیدی
کامپوزیت، بهینه، محو شدن عددی شدید، دقت بالاتر،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
چکیده انگلیسی
A class of composite method that implements the trapezoidal rule in the first few sub-steps and the backward difference formula in the last sub-step is studied in this paper. The optimal schemes of two sub-step, three sub-step and four sub-step methods, where the four sub-step composite scheme is developed for the first time, are proposed by optimizing their accuracy. Compared with several existing composite methods, the optimal schemes are also endowed with second-order accuracy, unconditional stability and strong numerical damping, and they can achieve higher amplitude and period accuracy under the same amount of calculation. Moreover, it follows that in the optimal schemes the more sub-steps the higher accuracy, so the optimal four sub-step method is highly recommended. Several test problems are used to validate the performance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computers & Structures - Volume 202, June 2018, Pages 60-73
نویسندگان
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