Assume the plane stress element shown in Fig. E3-a represents the stress a geosynthetic membrane used in a mechanically stabilized earth wall. If the reference state of stress for this element results in the Mohr’s circle plot shown in Fig. E3-b, determine:The principal stresses. The principal directions (angles to the principal planes). The maximum in-plane shear stress. It is known that the seam, which is rotated 45 deg from the vertical as shown in Fig. E3-c, will fail if subjected to a tensile stress of 25 kPa or a shear stress of 1 kPa. Determine the normal stress and shear stress acting on the seam, and state if the seam will fail due to the loading indicated. 450SEAMFig. E3-c 40 kPa20 kPa* 30 40O (kPa)2020 kPa40T (kPa)Fig E3-aFig. E3-b

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Answered: Assume the plane stress element shown…

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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Assume the plane stress element shown in Fig. E3-a represents the stress a geosynthetic membrane used in a mechanically stabilized earth wall. If the reference state of stress for this element results in the Mohr’s circle plot shown in Fig. E3-b, determine:

The principal stresses.
The principal directions (angles to the principal planes).
The maximum in-plane shear stress.
It is known that the seam, which is rotated 45 deg from the vertical as shown in Fig. E3-c, will fail if subjected to a tensile stress of 25 kPa or a shear stress of 1 kPa. Determine the normal stress and shear stress acting on the seam, and state if the seam will fail due to the loading indicated.

40 kPa
20 kPa
* 30 40
O (kPa)
20
20 kPa
40
T (kPa)
Fig E3-a
Fig. E3-b

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