کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6754443 | 509523 | 2016 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of uncertainty and excitation amplitude on the vibration characteristics of rubber isolators
ترجمه فارسی عنوان
تأثیر عدم قطعیت و دامنه تحریک بر ویژگی های ارتعاش ایزولاتورهای لاستیکی
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کلمات کلیدی
ایزولاتور لاستیکی، ویژگی ارتعاش، غیر خطی، عدم اطمینان،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
Rubber isolators are widely used in engineering structures, which often exhibit some nonlinearity and uncertainty properties subjected to different environment exciting. In order to study the nonlinear characteristic and uncertainty of a rubber isolator system, the sin-sweep vibration tests with different base exciting level are carried out firstly. Then a single freedom degree mass-spring-damper model is introduced to simplify the rubber isolator system. In the theory model, the spring and the damper are represented by polynomial functions of the relative displacement. The coefficients in the functions are identified by the test data, while the uncertainties of the coefficients are quantified by the principal components analysis (PCA) and Monte Carlo (MC) simulations. The major resonant frequencies and the damping ratios of the isolation system are calculated according to the theory model, the amplitude-frequency nonlinear characteristics are simulated by Runge-Kutta numerical method. The simulation results agree well with the experimental results, which indicate that the nonlinear model and the uncertainty quantifying results are feasible to predict the vibration characteristic and uncertainty of the isolation systems.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Sound and Vibration - Volume 377, 1 September 2016, Pages 216-225
Journal: Journal of Sound and Vibration - Volume 377, 1 September 2016, Pages 216-225
نویسندگان
Chen Xueqian, Shen Zhanpeng, He Qinshu, Du Qiang, Liu Xin'en,