Honeycomb simplified shear criterion

II.1.10.26 Honeycomb simplified shear criterion

Sometimes, one simplifies the criterion described in section II.1.10.25 by using the smallest shear allowable $τ_{W}$ . This new criterion is referred to as “HoneyShear_b”.

As a single allowable is used, an equivalent shear stress can be defined:

τ_{shear} = \sqrt{τ_{13}^{2} + τ_{23}^{2}} .

(II.1.132)

The failure index is then calculated as follows:

F I^{HoneyShear_b} = \frac{τ_{shear}}{τ_{23}^{all}} .

Core passes the failure criterion if the following condition is satisfied

\sqrt{τ_{13}^{2} + τ_{23}^{2}} \leq τ_{23}^{all} .

The reserve factor is calculated as follows:

R F^{HoneyShear_b} = \frac{1}{F o S \cdot F I^{HoneyShear_b}},

and the strength ratio is given by:

S R^{HoneyShear_b} = F o S \cdot F I^{HoneyShear_b} .^{'}

This criterion is referred to as “HoneyShear_b” in FeResPost.

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