【摘要】：利用壓敏雙折射光學(xué)特性材料,實(shí)驗(yàn)測(cè)量了在自然堆積和密堆積兩種制樣方式下顆粒倉(cāng)軸向荷載在倉(cāng)壁上隨深度的分布.發(fā)現(xiàn)在填充顆�？傎|(zhì)量相同、容器不變的情況下,顆粒倉(cāng)軸向荷載在倉(cāng)壁上的分布不隨顆粒深度單調(diào)變化,而是隨深度呈單峰結(jié)構(gòu),數(shù)值模擬與實(shí)驗(yàn)觀察定性符合,并且發(fā)現(xiàn)峰值依賴于荷載大小和樣品的制備方式.另外,我們也測(cè)量了在不同填充高度下的顆粒底部平均應(yīng)力隨軸向荷載的變化,將其與邊壁應(yīng)力對(duì)比,得到顆粒體系不同深度處的轉(zhuǎn)向比.
[Abstract]:In this paper, the axial load distribution of grain bunker on the wall of the silo is measured by means of pressure sensitive birefringence optical characteristic material under two kinds of sample preparation modes: natural and dense stacking, and the distribution of axial load on the wall of the silo is measured. It is found that the distribution of axial load on the wall of the silo does not change monotonously with the depth of the particle, but with the same mass of the filled particles and the same container. The numerical simulation is consistent with the experimental observation qualitatively, and the distribution of the axial load on the wall does not change monotonously with the depth of the particle. It is also found that the peak value depends on the load size and the preparation method of the sample. In addition, the variation of the average stress at the bottom of the particle with axial load at different filling heights is also measured, and the steering ratio at different depths of the particle system is obtained by comparing it with the stress on the side wall.
【作者單位】： 西北師范大學(xué)物理與電子工程學(xué)院;中國(guó)科學(xué)院物理研究所;甘肅民族師范學(xué)院物理與水電工程系;中國(guó)科學(xué)院大學(xué)物理學(xué)院;中國(guó)科學(xué)院近代物理研究所;
【基金】：國(guó)家自然科學(xué)基金(批準(zhǔn)號(hào):11274354,11474326,11565021) 中國(guó)科學(xué)院空間科學(xué)戰(zhàn)略性先導(dǎo)科技專項(xiàng)(批準(zhǔn)號(hào):XDA04020200) 地震行業(yè)科研經(jīng)費(fèi)(批準(zhǔn)號(hào):201208011)資助的課題~~
【分類號(hào)】：O348.1

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