`block.zone.stress.effective`

Syntax

## Tensor Access

- t = block.zone.stress.effective(bzp<,i1<,i2>>)
Get the zone effective stress, calculated from the stress plus the zone-averaged pore pressure.

Returns: t or f - zone effective stress tensor, or, if the optional indices are supplied, the specified tensor value Arguments: bzp - block zone pointer

i1 - optional tensor index that, if used alone, ranges from 1 to 6 and returns the the \(xx\), \(yy\), \(zz\), \(xy\), \(xz\), and \(yz\) tensor values, respectively.

i2 - option tensor index that must be given with i1. In this case, i1 corresponds to the first index of the tensor position and i2 to the second in the row/column format. For instance, i1 = 1 and i2 = 3 returns the \(xz\) tensor value.

## Value Access

- f = zone.stress.effective.xx(bzp)
Get the \(xx\)-value of the zone effective stress.

Returns: f - \(xx\)-value of the zone strain increment tensor Arguments: bzp - block zone pointer

- f = zone.stress.effective.xy(bzp)
Get the \(xy\)-value of the zone effective stress.

Returns: f - \(xy\)-value of the zone strain increment tensor Arguments: bzp - block zone pointer

- f = zone.stress.effective.xz(bzp)
Get the \(xz\)-value of the zone effective stress.

Returns: f - \(xz\)-value of the zone strain increment tensor Arguments: bzp - block zone pointer

- f = zone.stress.effective.yy(bzp)
Get the \(yy\)-value of the zone effective stress.

Returns: f - \(yy\)-value of the zone strain increment tensor Arguments: bzp - block zone pointer

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