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Solid Mechanics: Stress
Examples of Mohr's Circles in Plane
Stress
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| Case
1: txy
> 0 and sx > sy |
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| The principal axes are counterclockwise to the current axes (because
txy > 0) and no more
than 45º away (because sx
> sy).
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| Case
2: txy
< 0 and sx > sy |
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| The principal axes are clockwise to the current axes (because txy < 0) and no more than
45º away (because sx >
sy).
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| Case
3: txy
> 0 and sx < sy |
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| The principal axes are counterclockwise to the current axes (because
txy > 0) and between
45º and 90º away (because sx < sy).
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| Case
4: txy
< 0 and sx < sy |
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| The principal axes are clockwise to the current axes (because txy < 0) and between 45º and
90º away (because sx <
sy).
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| Case
5: txy =
0 and sx > sy |
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| The principal axes are aligned with the current
axes (because sx >
sy and txy = 0).
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| Case
6: txy =
0 and sx < sy |
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| The principal axes are exactly 90° from the
current axes (because sx
< sy and txy = 0).
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