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为了研究耗能层类型改变对复合防护结构防护能力的影响,利用LS-DYNA有限元软件,对采用波纹型泡沫混凝土作为耗能层的复合防护结构在爆炸荷载作用下的动力响应进行了模拟,从压力、合成位移、合成加速度和合成速度4个方面考察其防护能力,发现波纹型泡沫混凝土防护能力明显优于平板型泡沫混凝土;并对波纹周期分别为6,8,10 cm的情况进行比较,发现其抗爆效果基本符合波纹周期越小,防护效果越好的规律。
In order to study the influence of the energy-dissipating layer type on the protective ability of the composite protective structure, the dynamic response of the composite protective structure with corrugated foam concrete as the energy-dissipating layer under the explosion load was simulated by LS-DYNA finite element software. From the aspects of pressure, synthetic displacement, synthetic acceleration and synthetic speed, the protective capability of corrugated foam concrete is obviously better than that of flat foam concrete. And the corrugation cycles of 6, 8 and 10 cm are compared , Found that the antiknock effect is basically consistent with the smaller corrugated cycle, the better the protective effect of the law.