@conference {16914, title = {Protection of infrastructures against explosions using ductile blast-energy absorption connectors}, booktitle = {17th International Conference on Structures under Shock and Impact - SUSI 2025}, year = {2025}, month = {9-11 June}, address = {Edinburgh, UK}, author = {Gabriel de Jesus Gomes and V{\'a}lter Jos{\'e} da Guia L{\'u}cio and Corneliu Cismasiu} } @article {doi:10.1177/20414196231183006, title = {Development of a high-performance blast energy-absorbing system for building structures}, journal = {International Journal of Protective Structures}, volume = {15}, year = {2024}, note = {

n/a

}, pages = {484-508}, abstract = {

Shock absorbers have been widely used in the automotive and aeronautical industries for many years. Inspired on these devices, the paper presents an analytical and numerical assessment of a high performance protective system for building structures against blast loads, which is composed of a shielding element connected to the main structure, at the floor levels, through ductile Energy Absorbing Connectors (EACs). The EACs exploit the external tube inversion mechanism to absorb a significant part of the imparted kinetic energy from the blast wave. While the system prototype has been developed in laboratory, it was characterized and tested in a full-scale blast testing campaign. A validated finite element model was used next to analyze its performance in a more demanding design scenario. The introduction of EACs notably reduces the peak horizontal loads and the kinetic energy transferred to the protected structure, being expected a significant reduction of the stresses in the supporting vertical elements, in addition to the protection of structural and non-structural members. These results encourage further studies of the presented protective system that can be potentially employed for a large variety of blast threat scenarios, especially when increasing the stand-off is not a possible/viable option and sensitive facilities have to be protected.

}, doi = {10.1177/20414196231183006}, url = {https://doi.org/10.1177/20414196231183006}, author = {Gabriel de Jesus Gomes and Valter Jos{\'e} da Guia L{\'u}cio and Corneliu Cismasiu} } @inbook {16290, title = {Experimental Research and Development on Blast Resistant Structures}, booktitle = {Advances on Testing and Experimentation in Civil Engineering, Springer Tracts in Civil Engineering}, year = {2023}, pages = {1-20}, publisher = {Springer Nature}, organization = {Springer Nature}, address = {Switzerland}, author = {Gomes, G. and Rebelo, H. and L{\'u}cio, V. and C. Cismasiu and Mingote, J.} } @article {16305, title = {Experimental Validation and Numerical Analysis of a High-Performance Blast Energy-Absorbing System for Building Structures}, journal = {Buildings}, volume = {13}, year = {2023}, pages = {1-20}, author = {Gabriel de Jesus Gomes and Valter Jos{\'e} da Guia L{\'u}cio and Corneliu Cismasiu and Jos{\'e} Luis Mingote} } @conference {16237, title = {Development of a high-performance blast energy-absorbing system for building structures}, booktitle = {AuxDefense2022 - 3rd World Conference on Advanced Materials for Defense}, year = {2022}, month = {6-8 Jul.}, address = {Guimar{\~a}es, Portugal}, author = {G. J. Gomes and L{\'u}cio, V J G and C. Cismasiu} } @conference {16242, title = {Full Scale Blast testing of a High-Performance Energy-Absorbing System}, booktitle = {PROTEDES2022}, year = {2022}, month = {25 Nov.}, address = {Regi{\~a}o Sul da Ordem dos Engenheiros, Lisboa}, author = {G. J. Gomes and V{\'a}lter L{\'u}cio and Corneliu Cismasiu} } @conference {16239, title = {PROTEDES - Protection of Strategic Buildings Against Blast - Final Report}, booktitle = {PROTEDES2022}, year = {2022}, month = {25 Nov.}, address = {Regi{\~a}o Sul da Ordem dos Engenheiros, Lisboa}, author = {Stefan Marius Buru and V{\'a}lter L{\'u}cio and Corneliu Cismasiu} } @article {doi:10.1080/15583058.2021.1963506, title = {Seismic Vulnerability Assessment of a Stone Arch Using Discrete Elements}, journal = {International Journal of Architectural Heritage}, year = {2021}, note = {n/a}, pages = {1-15}, publisher = {Taylor \& Francis}, abstract = {n/a}, doi = {10.1080/15583058.2021.1963506}, url = {https://www.tandfonline.com/doi/abs/10.1080/15583058.2021.1963506}, author = {Cisma{\c s}iu, Corneliu and Pedro B. S. Silva and Jos{\'e} V. Lemos and Ildi Cisma{\c s}iu} } @conference {13156, title = {Avalia{\c c}{\~a}o da vulnerabilidade s{\'\i}smica de um arco em alvenaria utilizando o m{\'e}todo dos elementos discretos}, booktitle = {S{\'I}SMICA 2019 - 11{\textordmasculine} Congresso Nacional de Sismologia e Enhenharia S{\'\i}smica}, year = {2019}, month = {29 e 30 de Abril}, address = {Lisboa}, attachments = {https://docentes.fct.unl.pt/sites/default/files/cornel/files/final_sismica2019.pdf}, author = {Pedro Boto Semblano da Silva and Corneliu Cismasiu and Jos{\'e} Vieira de Lemos} } @conference {13491, title = {3D printed PLA sacrificial honeycomb cladding blast mitigation}, booktitle = {18th International Symposium for the Interaction of Munitions with Structures (ISIEMS)}, year = {2019}, month = {21-25 Oct.}, address = {Panama City Beach, FL, USA}, author = {H. B. Rebelo and D. Lecompte and Cisma{\c s}iu, C. and A. Jonet and B. Belkassem and A. Maazoun} } @article {13198, title = {Experimental and numerical investigation on 3D printed PLA sacrificial honeycomb cladding}, journal = {International Journal of Impact Engineering}, volume = {131}, year = {2019}, pages = {162-173}, url = {https://doi.org/10.1016/j.ijimpeng.2019.05.013}, author = {H. B. Rebelo and D. Lecompte and C. Cismasiu and A. Jonet and B. Belkassem and A. Maazoun} } @conference {13493, title = {Blast Assessment {\textendash} A Methodology}, booktitle = {ISMS 2018 10th Anniversary Conference: Military Sciences and Future Security Challenges}, year = {2018}, month = {18-19 Oct.}, address = {War Studies University, Warsaw}, attachments = {https://docentes.fct.unl.pt/sites/default/files/cornel/files/gomes.pdf}, author = {Gomes, G. and L{\'u}cio, V. and C. Cismasiu and Rebelo, H.} } @conference {12716, title = {Experimental characterization of 3D-printed PLA under uniaxial high strain-rate loading}, booktitle = {AuxDefense 2018 {\textendash} 1st World Conference on Advanced Materials for Defense}, year = {2018}, month = {1-3 September}, address = {Lisbon}, attachments = {https://docentes.fct.unl.pt/sites/default/files/cornel/files/auxdefense_extabstract_v2.pdf}, author = {H. B. Rebelo and A. Greg{\'o}rio and P. A. R. Rosa and D. Lecompte and Cisma{\c s}iu, C.} } @conference {11154, title = {Numerical Simulation of Blast Effects on Fibre Grout Strengthened RC Panels}, booktitle = {International Conference on Structural and Mechanical Engineering for Security and Prevention 2017}, year = {2017}, month = {14-16 June}, address = {Prague, Czech Republic}, author = {Hugo Miguel Bento Rebelo and Corneliu Cismasiu and V{\'a}lter Jos{\'e} da Guia L{\'u}cio and Manuel Tom{\'a}s Marques do Souto Gon{\c c}alves and Gabriel de Jesus Gomes and Jos{\'e} Pedro Fernandes Basto} } @conference {cismasiu2017, title = {Numerical Simulation of Blast Effects on Fibre Grout Strengthened RC Panels}, booktitle = {Structural and Mechanical Engineering for Security and Prevention}, series = {Key Engineering Materials}, volume = {755}, year = {2017}, note = {n/a}, month = {10}, pages = {18{\textendash}30}, publisher = {Trans Tech Publications}, organization = {Trans Tech Publications}, abstract = {

The present paper aims to examine the potential of the Applied Element Method (AEM) in simulating the blast effects in RC panels. The numerical estimates are compared with the results obtained in an experimental campaign designed to investigate the effectiveness of fibre grout for strengthening full scale RC panels by comparing the effects that a similar blast load produces in a reference and the strengthened panel. First, a numerical model of the reference specimen was created in the software Extreme Loading for Structures and calibrated to match the experimental results. With no further calibration, the fibre reinforced grout strengthening was added and the resulting numerical model subjected to the same blast load. The experimental blast effects on both reference and strengthened panels, despite the lack of high speed measurement equipment (pressure, strains and displacements sensors), compare well with the numerical estimates in terms of residual and maximum displacements, showing that, once calibrated, the AEM numerical models can be successfully used to simulate blast effects in RC panels.

}, keywords = {applied element method, Blast Effect, Fibre Reinforced Grout, Non-Linear Dynamic Analysis}, doi = {10.4028/www.scientific.net/KEM.755.18}, author = {Hugo Bento Rebelo and Cisma{\c s}iu, Corneliu and L{\'u}cio, V{\'a}lter J.G. and Gon{\c c}alves, Manuel T.M.S. and Gomes, Gabriel J. and Basto, Jos{\'e} P.F.} } @conference {Tue_Dec__2_16:32:22_WET_2003, title = {Low velocity impact on laminates reinforced with {P}olyethylene and {A}ramidic fibres}, booktitle = {Computational Methods in Engineering and Science. Proceedings of the 9th International Conference EPMESC IX}, year = {2003}, note = {n/a}, month = {25-28 November}, pages = {843-849}, publisher = {A.A.Balkema Publishers}, organization = {A.A.Balkema Publishers}, address = {Macao, China}, abstract = {

The present study reports low velocity impact tests on composite laminate plates reinforced either with Kevlar 29 or Dyneema. The tests are produced using a Rosand Precision Impact tester. The experimental results obtained for Kevlar 29 are simulated numerically. The deflection history and the peak of the impact force are compared with experimental data and used to calibrate the numerical model.

}, keywords = {Composite Materials, Low Velocity Impact, Non-Linear Transient Dynamics}, url = {http://www.dec.fct.unl.pt/seccoes/S_Estruturas/docentes/cornel/papers/epmescIX.pdf}, author = {Silva, M. A. G. and Cisma{\c s}iu, C. and Chiorean, C. G.}, editor = {Iu, V.P. and Lamas, L.N. and Li, Y.-P. and Mok, K.M.} }