کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6954405 1451830 2018 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Estimation of hysteretic damping of structures by stochastic subspace identification
ترجمه فارسی عنوان
برآورد هیدرولیکی سازه های ساختاری با شناسایی زیر فضای تصادفی
کلمات کلیدی
شناسایی سیستم تولید خروجی، نیروی بازگردانی غیر خطی، خنک کننده هیسترتیک، خطی سازی، کاهش آرامش، ارتعاشات تصادفی،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر پردازش سیگنال
چکیده انگلیسی
Output-only system identification techniques can estimate modal parameters of structures represented by linear time-invariant systems. However, the extension of the techniques to structures exhibiting non-linear behavior has not received much attention. This paper presents an output-only system identification method suitable for random response of dynamic systems with hysteretic damping. The method applies the concept of Stochastic Subspace Identification (SSI) to estimate the model parameters of a dynamic system with hysteretic damping. The restoring force is represented by the Bouc-Wen model, for which an equivalent linear relaxation model is derived. Hysteretic properties can be encountered in engineering structures exposed to severe cyclic environmental loads, as well as in vibration mitigation devices, such as Magneto-Rheological (MR) dampers. The identification technique incorporates the equivalent linear damper model in the estimation procedure. Synthetic data, representing the random vibrations of systems with hysteresis, validate the estimated system parameters by the presented identification method at low and high-levels of excitation amplitudes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mechanical Systems and Signal Processing - Volume 105, 15 May 2018, Pages 36-50
نویسندگان
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