8.7 At a point in a material under stress, there is a compressive stress of 200 MN/m and a shear stress of 300 MN/m2 acting on the same plane. Determine the principal stresses and the directions of the planes on which they act. [216 MN/m2 at 54.2° to 200 MN/m2 plane;- 416 MN/m2 at 144.2°] 8.8 At a certain point in a material, the following stresses act: a tensile stress of 150 MN/m2, a compressive stress of 105 MN/m2 at right angles to the tensile stress and a shear stress clockwise in effect of 30 MN/m2. Calculate the principal stresses and the directions of the principal planes. [153.5,- 108.5 MN/m²; at 6.7° and 96.7° counterclockwise to 150 MN/m plane]

8.7 At a point in a material under stress, there is a compressive stress of 200 MN/m and a shear stress of 300 MN/m2 acting on the same plane. Determine the principal stresses and the directions of the planes on which they act. [216 MN/m2 at 54.2° to 200 MN/m2 plane;- 416 MN/m2 at 144.2°] 8.8 At a certain point in a material, the following stresses act: a tensile stress of 150 MN/m2, a compressive stress of 105 MN/m2 at right angles to the tensile stress and a shear stress clockwise in effect of 30 MN/m2. Calculate the principal stresses and the directions of the principal planes. [153.5,- 108.5 MN/m²; at 6.7° and 96.7° counterclockwise to 150 MN/m plane]

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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