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Unformatted text preview: horizontal and vertical planes at the point are shown. (a) Determine the principal stresses and the maximum inplane shear stress acting at the point. (b) Show these stresses on an appropriate sketch (e.g., see Fig. 1215 or Fig. 1216) (c) Compute the absolute shear stress at the point. 29) 30) 31) 32) 12.42 At a point on the free surface of a stressed body, a normal stress of 64 MPa (C) and an unknown positive shear stress exist on a horizontal plane. One principal stress at the point is 8 MPa (C). The absolute maximum shear stress at the point has a magnitude of 95 MPa. Determine the unknown stresses on the horizontal and vertical planes and the unknown principal stress at the point. For practice 12.19 12.35 12.43...
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 Winter '09
 Shao

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