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剪應力

剪應力(shear stress)是應力的一種,定義為單位面積上所承受的,且力的方向與受力面的法线方向垂直。公式記為

不等於的情況。其中,表示剪應力表示在方向的剪切力;表示在方向的受力面積。

虎克定律的剪應力公式

其中,是剪應力,是材料受力後所產生的剪應變(shear strain),是材料的剪力模數(shear modulus)[1]

流體的剪應力為:維持一定速度時,平板每單位面積所需施給之力。

相關領域

參考文獻

  1. ^ R. C. Hibbeler. Mechanics of Materials. Boston: Prentice Hall. 2011: 32. ISBN 978-0-13-602230-5 (英语). 
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剪應力
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