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4.2.2.3 Fiber with Toe-Linear Response, Uncoupled Formulation
This material type is “fiber-pow-linear-uncoupled”. The following material parameters need to be defined:
| <E> | the fiber modulus in the linear range ( | [P] |
| <beta> | the power-law exponent in the toe region ( | [ ] |
| <lam0> | the stretch ratio when the toe region transitions to the linear region ( | [ ] |
The fiber strain energy density is given by where , Example:
Fiber model as specified in a solid mixture (Section 4.1.2.14↑)
<solid type="fiber-pow-linear-uncoupled">
<fiber type="angles">
<theta>20</center>
<phi>90</phi>
</fiber>
<E>1</E>
<beta>2.5</beta>
<lam0>1.06</lam0>
</solid>