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Worksheets07.10.24 Stress Transformation
Total questions: 7
Worksheet time: 14mins
How are principal stresses related to the orientation of the planes?
Principal stresses are the normal stresses acting on the planes, where shear stress is zero.
If the shear stress τxyτyx is zero, the principal stresses are equal to which stresses?
σx and σy.
τxy and τyx
σx and σy.
Which of the following conditions would result in zero principal stresses?
A state of hydrostatic stress
A state of uniform loads or no external loads applied.
The major and minor principal stresses at a point are 3MPa and -3MPa respectively. The maximum shear stress at the point is
6MPa
0 MPa
Consider the following statements:
1. On a Principal plane, only normal stress acts
2. On a Principal plane, both normal and shear stresses acts
3. On a Principal plane, only shear stress acts
4. Isotropic state of stress is independent of frame of reference.
Which of the above statements is/are correct?
1,2,4
1 , 4
2,4
1,3,4
If a body is acted upon by a set of mutually perpendicular shear stresses, the diagonal planes are likely to have-
tension only
compression only
tension and compression
A thin-walled tube experiences internal pressure causing σx=200 MPa,
σy=50 MPa, and τxy=30 MPa. Calculate average normal stress?
122MPa
125MPa.
120MPa.
130MPa.
