关键词: 夹层玻璃, 抗爆, 临界破坏, 炸药当量, 爆炸距离, 有限元法

Abstract:  he blast resistance design of laminated glass helps to reduce the personal injury caused by explosive
blast． The traditional blast resistance design with p-i diagram，where p is overpressure and i is positive impulse per unit area，does not take into consideration the effect of negative phase of blast． However，the negative phase can significantly affect the dynamic response of laminated glass． In order to solve this problem，the effect of the negative phase of blast on the p-i diagram is simulated by means of the finite element method． Aiming at the deficiency of the p-i diagram design method for blast resistance，a design method named W-R method，where W refers to explosive equivalent and R refers to explosion distance，is developed for blast resistance． In comparison with the p-i diagram design method，the W-R design method is more feasible for the blast resistance design because the W-R diagram has a simpler form and is more regular and more intuitional． Furthermore，the effects of the geometric parameters of laminated glass on its impact resistance are qualitatively analyzed，and by taking the critical damage of laminated glass as the benchmark，an empirical W-R formula is fitted to evaluate the blast resistance of laminated glass，which can provide guidance for the blast resistance design of laminated glass．

Key words: laminated glass, blast resistance, critical damage, explosive equivalent, explosion distance, finite element method