Dynamic Load Identification of Unspecified Metal Structures by Measuring Their Response
نویسندگان
چکیده
Many engineering structures are made of metal composite materials. External load information is a key issue for the design and condition monitoring structures. Due to limitation measurement technology external environment, it difficult directly measure dynamic loads on in many circumstances. This paper focuses evaluating applied structure with unknown properties. We proposed novel identification method that based Bayesian principle coupled extended Kalman filter method. Firstly, modal parameters identified under ambient excitation using fast Fourier transform (FFT). The posterior probability density function (PDF) covariance obtained by response data, then unconstrained optimization. Next, space used update identify time-domain loads. accuracy theory was evaluated experimentally Bernoulli−Euler beam. results showed feasible efficient.
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ژورنال
عنوان ژورنال: Metals
سال: 2022
ISSN: ['2075-4701']
DOI: https://doi.org/10.3390/met12111872