Description Usage Arguments Details
Stress ellipsoid, or 'shape factor'
1 | shape_factor(S1, S2, S3, check.order = TRUE, stress.ratio = FALSE)
|
S1 |
numeric; the maximum principal stress |
S2 |
numeric; the intermediate principal stress |
S3 |
numeric; the minimum principal stress |
check.order |
logical; should the order of the stress be checked?
If the check fails the indices which caused it to fail will be returned.
Set this to |
stress.ratio |
logical; should the |
If S1
> S2
> S3
then:
φ = \frac{S2 - S3}{S1 - S3}
which is the parameter returned by SATSI, for example.
Note that the stress_ratio
is:
R = 1 - φ = \frac{S1 - S2}{S1 - S3}
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