کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
807274 905491 2009 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Identification of stiffness, dissipation and input parameters of multi degree of freedom civil systems under unmeasured base excitations
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Identification of stiffness, dissipation and input parameters of multi degree of freedom civil systems under unmeasured base excitations
چکیده انگلیسی

A time domain dynamic identification technique based on a statistical moment approach has been formulated for civil systems under base random excitations in the linear state. This technique is based on the use of classically damped models characterized by a mass proportional damping. By applying the Itô stochastic calculus, special algebraic equations that depend on the statistical moments of the response can be obtained. These equations can be used for the dynamic identification of the mechanical parameters that define the structural model, in the case of unmeasured input as well, and the identification of the input itself. Furthermore, the above equations demonstrate the possibility of identifying the dissipation characteristics independently from the input characteristics. This paper discusses how the equations for solving the identification problem can be obtained and gives an application.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Probabilistic Engineering Mechanics - Volume 24, Issue 2, April 2009, Pages 190–198
نویسندگان
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