Zobrazeno 1 - 10
of 70
pro vyhledávání: '"Ahmed M. Abdel‐Ghaffar"'
Publikováno v:
Shock and Vibration, Vol 2, Iss 4, Pp 259-272 (1995)
A three-dimensional modeling procedure is proposed for cable-stayed bridges with rubber, steel, and lead energy dissipation devices. The passive control technique is investigated by considering the response of bridge models with and without energy di
Externí odkaz:
https://doaj.org/article/195ddd80ed91444b8d1f05d717dc1ae2
Autor:
Ahmed M. Abdel-Ghaffar, Mourad Zeghal
Publikováno v:
Journal of Earthquake Engineering. 13:384-405
A system identification framework is proposed to investigate the nonlinear dynamic response of massive earth dams using the seismic motion recorded by a sparse array of accelerometers. The framework includes a methodical step of nonparametric analyse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9646db89f88c6ad66b522f2bb4d4d5cc
https://doi.org/10.1080/13632460802597711
https://doi.org/10.1080/13632460802597711
Publikováno v:
Journal of Structural Engineering. 121:1134-1144
A finite-element model is presented for rubber, steel and lead devices for seismic isolation and energy dissipation applications. A large displacement/large strain formulation is proposed for rubber materials considering a consistent penalty approach
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::733772d2e1b43bb74c37ef4621bf9edf
https://doi.org/10.1061/(asce)0733-9445(1995)121:7(1134)
https://doi.org/10.1061/(asce)0733-9445(1995)121:7(1134)
Autor:
Ahmed M. Abdel-Ghaffar, H.M. Ali
Publikováno v:
Computers & Structures. 54:461-492
A three-dimensional nonlinear finite element model is developed for cable-stayed bridges under static and dynamic loadings based on the total Lagrangian formulation. The model can account for the large displacements that are usually associated with e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1b03275afb481a2415469391e3c6506
https://doi.org/10.1016/0045-7949(94)00353-5
https://doi.org/10.1016/0045-7949(94)00353-5
Publikováno v:
Earthquake Engineering & Structural Dynamics. 23:859-876
The paper presents results from the first series of an ongoing experimental study aimed at quantifying the effect of axial column load on the shear capacity of beam-to-column connections. This is deemed important due to the recent evidence showing th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8ea3888f2eb0113c0276f8bb2bce9ea3
https://doi.org/10.1002/eqe.4290230804
https://doi.org/10.1002/eqe.4290230804
Publikováno v:
Earthquake Engineering & Structural Dynamics. 23:877-893
This study assesses analytically the effectiveness, feasibility and limitations of elastic and hysteretic damping augmentation devices, such as elastomeric and lead-rubber bearings, with respect to the dynamic and seismic performance of cable-stayed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84ec40bc47bad6abe6d4227a36c0432f
https://doi.org/10.1002/eqe.4290230805
https://doi.org/10.1002/eqe.4290230805
Autor:
Raimondo Betti, Ahmed M. Abdel-Ghaffar
Publikováno v:
Journal of Engineering Mechanics. 120:1283-1303
An alternative formulation of the substructure‐deletion method for the dynamic analysis of three‐dimensional embedded foundations of arbitrary shape subjected to applied external forces and to incoming seismic waves is presented. The analysis is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa2803e7de03c3604d108a66a31eec43
https://doi.org/10.1061/(asce)0733-9399(1994)120:6(1283)
https://doi.org/10.1061/(asce)0733-9399(1994)120:6(1283)
Publikováno v:
Earthquake Engineering & Structural Dynamics. 22:415-430
A general procedure is presented to study the dynamic soil–structure interaction effects on the response of long-span suspension and cable-stayed bridges subjected to spatially varying ground motion at the supporting foundations. The foundation sys
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f1a60fcbf551f34553b06db5b2862c7f
https://doi.org/10.1002/eqe.4290220505
https://doi.org/10.1002/eqe.4290220505
Autor:
Mourad Zeghal, Ahmed M. Abdel-Ghaffar
Publikováno v:
Journal of Geotechnical Engineering. 118:266-277
The seismic records of the Long Valley Earth Dam are utilized in order to shed some light on the salient features of the dam nonlinear behavior. The dam is well instrumented with 22 accelerographs tied with a common triggering. It was shaken in the 1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::22ee913becd227b89ae3dbc8b7599e2f
https://doi.org/10.1061/(asce)0733-9410(1992)118:2(266)
https://doi.org/10.1061/(asce)0733-9410(1992)118:2(266)
Autor:
M. Zeghal, Ahmed M. Abdel-Ghaffar
Publikováno v:
Computers & Structures. 42:569-579
This paper addresses the numerical analysis of the elasto-plastic dynamic behavior of earth dams. A local-global finite element method is introduced. The method combines local and global shape functions. It has the flexibility of the finite element m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11131f38a1be4be590c1fc2904805d7c
https://doi.org/10.1016/0045-7949(92)90124-i
https://doi.org/10.1016/0045-7949(92)90124-i