| Titre : | Rigid block sliding to idealized acceleration pulses (2012) |
| Auteurs : | Elia Voyagaki, Auteur ; Mylonakis, George, Auteur ; Ioannis N. Psycharis, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Journal of engineering mechanics (Vol. 138 N° 9, Septembre 2012) |
| Article en page(s) : | pp.1071–1083. |
| Note générale : | Mécanique appliquée |
| Langues : | Anglais |
| Tags : | Sliding Closed-form solution Near-fault Pulse Asymmetric friction Stick-slip effect |
| Résumé : | New analytical solutions are derived for the frictional sliding of rigid blocks to idealized ground acceleration pulses. These excitations are indicative of near-fault earthquake motions affected by forward fault-rupture directivity, which may inflict large permanent displacements in the absence of substantial frictional resistance at the sliding interface. The scope of this study is threefold: (1) to derive analytical solutions for a wide set of idealized pulses; (2) to investigate the effects of symmetric and asymmetric sliding under both unilateral and bilateral excitation conditions; and (3) to explore alternative normalization schemes of peak sliding with reference to peak pulse acceleration, velocity, duration, and shape. A generalized exponential function, capable of simulating an infinite number of pulse waveforms based on a single parameter, is employed to this end. Results are presented in the form of dimensionless closed-form expressions and graphs that provide insight into the physics of the nonlinear problem. |
| ISSN : | 0733-9399 |
| En ligne : | http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29EM.1943-7889.0000418 |
