PSI - Issue 44

ScienceDirect Structural Integrity Procedia 00 (2022) 000–000 Structural Integrity Procedia 00 (2022) 000–000 Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Available online at www.sciencedirect.com ScienceDirect

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

Procedia Structural Integrity 44 (2023) 2144–2151

© 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy. Abstract Metal foam is a relatively new and potentially revolutionary material due to its properties such as the low weight-to-stiffness ratio, high damping and energy dissipation capacity. Even if this material is widely used in mechanical, aerospace and automotive industries, it is still not frequently used in civil engineering applications. The large energy dissipation capacity that metal foams possess could be exploited to control the seismic performance of structures, but only few research investigations have been focused on this matter. Within this context, the present paper investigates a possible solution to realize dissipative aluminium foam dampers to be applied in X-braced steel structure resembling a concentrically braced steel frame (CBF). The bracing system consists of a steel rod or tube linked to the aluminium foam damper. The damper device is constituted by aluminium foam that provides the structure with dissipation capacity when activated under compression. The permanent deformations of the aluminium foam are absorbed by a wedge device, avoiding a pinching behaviour in the global response. Analytical equations governing the global behaviour of the bracing system are herein developed. An X-braced steel frame complying with Eurocode 8 provisions is designed and considered as case-study. The structure is subsequently upgraded by introducing the dissipative device into the bracings. The results of preliminary experimental and numerical tests on the components of the device are herein presented, showing the potentiality of the solution. © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review under responsibility of the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy Keywords: Metal-foam; Steel structures; Concentrically braced frames. XIX ANIDIS Conference, Seismic Engineering in Italy Conceptual design of anti-seismic devices with metal foam core for CBFs Amparo de la Peña a *, Atsushi Sato b , Massimo Latour a , Gianvittorio Rizzano a a Department of Civil Engineering, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, SA, Italy b Nagoya Institute of Technology, Gokiso, Showa, N goya, 4668555, Aichi, Japan Abstract Metal foam is a relatively new and potentially revolutionary material due to its properties such as the low weight-to-stiffness ratio, high damping and en rgy dissipati n capacity. Even if this material is w dely used in mechanica , aerospace and automotive industries, t is still not frequently used in civil engi eering application . The arge energy dissipation capacity that metal f ams possess could be expl ited to control the seism c performa ce of structures, but only f w esearch investig tions have be n focused on thi matter. Within this c ntex , the present pa investigates a possible solution to realiz diss pative aluminium foam damp rs to be applied in X-braced steel s ructure r sembling a concentrically braced steel fram (CBF). The bracing system consists of a steel rod or tube linked to h aluminium foa damper. The damper device is constituted by aluminium foam hat prov des the ructure wi h dissipation capacity when activated under compression. The permanent deform tions of the luminium foam ar absorbed by a wedge devi e, avoiding a pinching behaviour in the global respons . Analytic l equations gover ing the global behaviour of the bracing system are herein developed. An X-braced steel fram c mplying wi h Eurocode 8 pr isio s is designed and considered as case-study. The structure is subs que tly upgra ed by introducing the dissipative device into the bracing . The results of p limin ry experimental and numerical tests on the components of the dev ce are her in presen ed, showing t potentiality of the solution. © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review under responsibility of scientific committe of the XIX ANIDIS C nference, Seismic Engineering in Italy K ywords: Metal-foam; Steel structures; Con entrically braced frames. XIX ANIDIS Conference, Seismic Engineering in Italy Conceptual design of anti-seismic devices with metal foam core for CBFs Amparo de la Peña a *, Atsushi Sato b , Massimo Latour a , Gianvittorio Rizzano a a Department of Civil Engineering, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, SA, Italy b Nagoya Institute of Technology, Gokiso, Showa, Nagoya, 4668555, Aichi, Japan

* Corresponding author. Tel.: +393480553316 E-mail address: a.delapena@studenti.unisa.it * Corresponding author. Tel.: +393480553316 E-mail address: a.delapena@studenti.unisa.it

2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy 2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy

2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy. 10.1016/j.prostr.2023.01.274