### 5.12.9. Orthotropic Yield Strength Model

To access local data

    USE matdef
    USE str_orthyld

OYA11 | Yield surface constant a11
OYA22 | Yield surface constant a22
OYA33 | Yield surface constant a33
OYA12 | Yield surface constant a12
OYA23 | Yield surface constant a23
OYA13 | Yield surface constant a13
OYA44 | Yield surface constant a44
OYA55 | Yield surface constant a55
OYA66 | Yield surface constant a66
EFFTAB`n` | Table of Effective Stress values, `n`= 1 to 10
EPSTAB`n` | Table of Effective Plastic Strain values, `n`= 1 to 10

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