…Such secondary characteristics of powders are generally called powder properties. The angle of repose is also called the angle of repose, and is the angle between the horizontal plane and the surface of a cone formed when powder is dropped through a funnel or the like and deposited on a horizontal plane. In addition, if we imagine a plane of any unit area inside a powder, the angle φ i = tan -1 (τ 0 /σ) determined by the normal stress σ acting on that plane and the shear stress τ 0 just before the plane starts to slip is called the angle of internal friction. … *Some of the terminology explanations that mention "angle of repose" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…このような粉粒体の二次的特性は,一般に粉体物性と呼ばれている。 安息角angle of reposeは息角,休止角とも呼ばれ,粉粒体を漏斗などで落下させ,水平面上に堆積させた場合に形成される円錐の表面が水平面となす角度である。また,粉粒体の内部に任意の単位面積の平面を想定した場合,その面に対して作用する法線方向の応力σとその面が滑りを起こす寸前のせん断応力τ0とによってきまる角度φi=tan-1(τ0/σ)を内部摩擦角という。… ※「angle of repose」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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