【摘要】：黃土中爆炸成腔的大小與黃土參數(shù)具有密不可分的關系,其中黃土的天然密度和含水率是主要影響因素。利用ANSYS/LS-DYNA軟件進行三維建模,模擬黃土中爆炸成腔的過程,與黃土中爆炸試驗結果進行對比,從空腔體積、峰值應力、爆后土體密度3個方面驗證數(shù)值模擬的可行性。以土體天然密度和含水率作為影響因素,對黃土中爆炸空腔的體積規(guī)律進行數(shù)值模擬研究,得到三維擬合規(guī)律,發(fā)現(xiàn)天然密度對爆后空腔體積影響較大,含水率對其影響較小。
[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.
【作者單位】： 軍事交通學院研究生管理大隊;軍事交通學院國防交通系;
【分類號】：O38

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