Stochastic subspace identification of modal parameters during ice–structure interaction

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Operational Modal Analysis using a Fast Stochastic Subspace Identification Method

Stochastic subspace identification methods are an efficient tool for system identification of mechanical systems in Operational Modal Analysis, where modal parameters (natural frequencies, damping ratios, mode shapes) are estimated from measured ambient vibration data of a structure. System identification is usually done for many successive model orders, as the true system order is unknown. The...

متن کامل

Reference-based Stochastic Subspace Identification for Output-only Modal Analysis

When performing vibration tests on civil engineering structures, it is often unpractical and expensive to use arti"cial excitation (shakers, drop weights). Ambient excitation on the contrary is freely available (tra$c, wind), but it causes other challenges. The ambient input remains unknown and the system identi"cation algorithms have to deal with output-only measurements. For instance, realisa...

متن کامل

Subspace Identification of Modal Coordinate Time Series

The paper presents how direct estimation of the modal coordinate time series can be performed using a time domain subspace based system identification method. The method overcomes the traditional limitation on maximum number of modal coordinates to be estimated being less or equal to the applied number of sensors. This is achieved by utilizing the information on system order inherent in the sta...

متن کامل

Stochastic Subspace System Identification of a Steel

The design of transmitter masts is determined by the wind load. The mast should sustain the load without excessive stresses but moreover in order to prevent malfunctioning of the antennae, the rotation at the top has to be limited. Because the time dependent character of the wind, the response is inherent dynamic and susceptible to resonance effects. The dynamic magnification at resonance is la...

متن کامل

Stochastic subspace identification via “LQ decomposition”

A new stochastic subspace identification algorithm is developed with the help of a stochastic realization on a finite interval. First, a finite-interval realization algorithm is rederived via “block-LDL decomposition” for a finite string of complete covariance sequence. Next, a stochastic subspace identification method is derived by adapting the finiteinterval realization algorithm to incomplet...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences

سال: 2019

ISSN: 1364-503X,1471-2962

DOI: 10.1098/rsta.2019.0030