黄土中爆炸空腔体积规律的数值模拟

发布时间：2019-01-12 09:50

【摘要】：黄土中爆炸成腔的大小与黄土参数具有密不可分的关系,其中黄土的天然密度和含水率是主要影响因素。利用ANSYS/LS-DYNA软件进行三维建模,模拟黄土中爆炸成腔的过程,与黄土中爆炸试验结果进行对比,从空腔体积、峰值应力、爆后土体密度3个方面验证数值模拟的可行性。以土体天然密度和含水率作为影响因素,对黄土中爆炸空腔的体积规律进行数值模拟研究,得到三维拟合规律,发现天然密度对爆后空腔体积影响较大,含水率对其影响较小。
[Abstract]:The size of explosion cavities in loess is closely related to the parameters of loess, among which the natural density and moisture content of loess are the main influencing factors. By using ANSYS/LS-DYNA software to simulate the process of explosion into cavity in loess, the feasibility of numerical simulation is verified from three aspects: cavity volume, peak stress and density of soil after explosion, and the results are compared with the results of explosion test in loess. Taking the natural density and moisture content of soil as the influencing factors, the volume law of the explosion cavity in loess is numerically simulated, and the three-dimensional fitting rule is obtained. It is found that the natural density has a great influence on the volume of the cavity after explosion, and the effect of water content on the volume of the cavity is less than that of the natural density.
【作者单位】：军事交通学院研究生管理大队;军事交通学院国防交通系;
【分类号】：O38

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