For a plane stress problem, the state of stress at a point P is represented by the stress element as shown in figure_ 20 MPa (a) 48.3 80 MPa (b) 31.7 25 MPa 20 MPa By how much angle (0) in degrees the stress element should be rotated in order to get the planes of maximum shear stress? (c) 26.6 25 MPa (d) 13.3 →80 MPa 0

For a plane stress problem, the state of stress at a point P is represented by the stress element as shown in figure_ 20 MPa (a) 48.3 80 MPa (b) 31.7 25 MPa 20 MPa By how much angle (0) in degrees the stress element should be rotated in order to get the planes of maximum shear stress? (c) 26.6 25 MPa (d) 13.3 →80 MPa 0

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Methods to Determine Vertical Stress

The load applied to the soil is transferred to the underground. The presence of water at soil pores and solid grains above the soil are the primary components that are responsible for the effective load transfer. Due to the load acting, the internal component of the soil or the underground formations undergoes deformations or a tectonic shift. The amount of deformation depends upon the amount of load acting on the soil surface, which indeed, depends on the weight of everything present above the soil. Due to this, the underground soil element develops internal stresses which try to resist the tectonic changes.

Question

For a plane stress problem, the state of stress at a point P is represented by the stress element as shown in figure.
20 MPa
(a)48.3
80 MPa +
(b) 31.7
25 MPa
20 MPa
By how much angle (0) in degrees the stress element should be rotated in order to get the planes of maximum
shear stress?
(c) 26.6
25 MPa
(d) 13.3
→80 MPa
P
0

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