The Limited Resistance Rigid Perfectly Plastic Hinge (LRPH) are special steel connections mainly usable to join beam elements of plane or spa-tial steel frames. The fundamental characteristics of these devices are the mutu-al independence of their own resistance and stiffness features as well as the re-spect of assigned constraints related to the elastic and limit behaviour of the joined elements. Within the frame structural scheme, the device plays the role of a rigid perfectly plastic hinge, constituted by a suitably sized sandwich sec-tion. The efficient use of the LRPH in the relevant frame depends on the appro-priate design of the device geometry. In the present paper, a new approach de-voted to the optimal flexural design of the LRPH is presented, according with the imposed mechanical constraints as well as with further suggested technolog-ical ones. The optimization procedure is based on a genetic algorithm approach and different applications are reported confirming the good applicability of the computational method as well as the reliability of the relevant device.

Benfratello S, Palizzolo L, Tabbuso P (2019). Optimal design of new steel connections. In EngOpt 2018 Proceedings of the 6th International Conference on Engineering Optimization. Springer [10.1007/978-3-319-97773-7].

Optimal design of new steel connections

Benfratello S;Palizzolo L
;
Tabbuso P
2019-01-01

Abstract

The Limited Resistance Rigid Perfectly Plastic Hinge (LRPH) are special steel connections mainly usable to join beam elements of plane or spa-tial steel frames. The fundamental characteristics of these devices are the mutu-al independence of their own resistance and stiffness features as well as the re-spect of assigned constraints related to the elastic and limit behaviour of the joined elements. Within the frame structural scheme, the device plays the role of a rigid perfectly plastic hinge, constituted by a suitably sized sandwich sec-tion. The efficient use of the LRPH in the relevant frame depends on the appro-priate design of the device geometry. In the present paper, a new approach de-voted to the optimal flexural design of the LRPH is presented, according with the imposed mechanical constraints as well as with further suggested technolog-ical ones. The optimization procedure is based on a genetic algorithm approach and different applications are reported confirming the good applicability of the computational method as well as the reliability of the relevant device.
Settore ICAR/08 - Scienza Delle Costruzioni
978-3-319-97772-0
Benfratello S, Palizzolo L, Tabbuso P (2019). Optimal design of new steel connections. In EngOpt 2018 Proceedings of the 6th International Conference on Engineering Optimization. Springer [10.1007/978-3-319-97773-7].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/429178
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