{"id":7885,"date":"2020-02-04T18:03:23","date_gmt":"2020-02-04T17:03:23","guid":{"rendered":"http:\/\/www.maffeis.it\/?p=7885"},"modified":"2021-02-11T23:02:23","modified_gmt":"2021-02-11T22:02:23","slug":"glazed-surfaces-under-blast-waves","status":"publish","type":"post","link":"https:\/\/www.maffeis.it\/index.php\/2020\/02\/04\/glazed-surfaces-under-blast-waves\/","title":{"rendered":"GLAZED SURFACES UNDER BLAST WAVES"},"content":{"rendered":"

An engineering approach<\/span><\/p>\n

for the basic design of glazed surfaces under blast waves<\/span><\/p>\n<\/div><\/div><\/div>

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Nowadays the design of blast-resistant glazed fa\u00e7ades is acquiring importance to comply with building safety standards. The high-pressure generated by the blast-wave air-front can lead to catastrophic failure of the glass panes and\/or their load-bearing structure, with a possible projection of fragments that constitutes a potential threat for human lives and properties.<\/p>\n

The time-dependent deformations-history is usually assessed via numerical analyses and\/or experimental investigations, but it is difficult to recognize the role of each element in the dynamic response of the whole. Here, to guide structural design, we propose a simple analytical model that permits a synthetic view of the phenomenon.<\/p>\n

The dynamic interaction between the blast wave and the ensemble of glazed panels and load-bearing structure is studied in few paradigmatic lumped element models<\/em>, representing glass panels supported by beams or tensioned cables, using Rayleigh\u2019s method<\/em> to reduce the plate-behavior of each glass panels to a single-degree-of-freedom oscillator. With reasonable approximations of the Friedlander waveform, the dynamic equations are solved. This analytical treatment quantifies the importance of the load-bearing structure in absorbing the biggest part of blast wave energy, to preserve the integrity of the glass.<\/p>\n<\/div>

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