Mathematical model to generate asymmetric pulses due to human jumping / Racic, V. in Journal of engineering mechanics, Vol. 135 N° 10 (Octobre 2009)  

Public ISBD [article]  inJournal of engineering mechanics > Vol. 135 N° 10 (Octobre 2009) . - pp. 1206-1211 Titre : Mathematical model to generate asymmetric pulses due to human jumping Type de document : texte imprimé Auteurs : Racic, V., Auteur ; Pavic, A., Auteur Article en page(s) : pp. 1206-1211 Note générale : Mécanique appliquée Langues : Anglais (eng) Mots-clés : Vibration Excitation Mathematical models Dynamic loads Vertical loads. Résumé : A novel mathematical modeling has been proposed to generate synthetic vertical force signal induced by a single person jumping. This model can replicate much of the temporal and spectral features of the real jumping loading more reliably than the existing half-sine models coupled with Fourier series analysis. This includes lack of symmetry of individual jumping pulses and near-periodic nature of consecutive pulses. The model therefore offers way forward as to the development of a new generation of synthetic narrow-band jumping loads. In these, the shape and frequency content of the jumping force can be changed easily on a jump-by-jump basis, which simulates better on what is happening in reality during human jumping. The synthetic jumping loading can be used in assessing vibration serviceability of civil engineering structures for which such dynamic excitation is relevant, such as assembly structures and concert venues. DEWEY : 620.1 ISSN : 0733-9399 En ligne : http://ascelibrary.aip.org/vsearch/servlet/VerityServlet?KEY=JENMDT&smode=strres [...] [article] Mathematical model to generate asymmetric pulses due to human jumping [texte imprimé] / Racic, V., Auteur ; Pavic, A., Auteur . - pp. 1206-1211. Mécanique appliquée Langues : Anglais (eng) in Journal of engineering mechanics > Vol. 135 N° 10 (Octobre 2009) . - pp. 1206-1211 Mots-clés : Vibration Excitation Mathematical models Dynamic loads Vertical loads. Résumé : A novel mathematical modeling has been proposed to generate synthetic vertical force signal induced by a single person jumping. This model can replicate much of the temporal and spectral features of the real jumping loading more reliably than the existing half-sine models coupled with Fourier series analysis. This includes lack of symmetry of individual jumping pulses and near-periodic nature of consecutive pulses. The model therefore offers way forward as to the development of a new generation of synthetic narrow-band jumping loads. In these, the shape and frequency content of the jumping force can be changed easily on a jump-by-jump basis, which simulates better on what is happening in reality during human jumping. The synthetic jumping loading can be used in assessing vibration serviceability of civil engineering structures for which such dynamic excitation is relevant, such as assembly structures and concert venues. DEWEY : 620.1 ISSN : 0733-9399 En ligne : http://ascelibrary.aip.org/vsearch/servlet/VerityServlet?KEY=JENMDT&smode=strres [...]

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