【摘要】：利用壓敏雙折射光學特性材料,實驗測量了在自然堆積和密堆積兩種制樣方式下顆粒倉軸向荷載在倉壁上隨深度的分布.發(fā)現(xiàn)在填充顆�？傎|量相同、容器不變的情況下,顆粒倉軸向荷載在倉壁上的分布不隨顆粒深度單調變化,而是隨深度呈單峰結構,數(shù)值模擬與實驗觀察定性符合,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,我們也測量了在不同填充高度下的顆粒底部平均應力隨軸向荷載的變化,將其與邊壁應力對比,得到顆粒體系不同深度處的轉向比.
[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】： 西北師范大學物理與電子工程學院;中國科學院物理研究所;甘肅民族師范學院物理與水電工程系;中國科學院大學物理學院;中國科學院近代物理研究所;
【基金】：國家自然科學基金(批準號:11274354,11474326,11565021) 中國科學院空間科學戰(zhàn)略性先導科技專項(批準號:XDA04020200) 地震行業(yè)科研經費(批準號:201208011)資助的課題~~
【分類號】：O348.1

【相似文獻】

相關會議論文 前1條

1 _5奇PI;林摦冿;鞠志琨;|!孝宜;;數(shù)位反射式光彈法于長挷鋼軌殘留應力之量測[A];2012年海峽兩岸破壞科學/材料試驗學術會議論文摘要集[C];2012年

，

本文編號：2365126