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