DoddRestrepo

This command is used to construct a Dodd-Restrepo steel material

uniaxialMaterial Dodd_Restrepo $tag $Fy $Fsu $ESH $ESU
        $Youngs $ESHI $FSHI < $OmegaFac >

matTag

Integer tag identifying material

Fy

Yield strength

Fsu

Ultimate tensile strength (UTS)

ESH

Tensile strain at initiation of strain hardening

ESU

Tensile strain at the UTS

Youngs

Modulus of elasticity

ESHI

Tensile strain for a point on strain hardening curve, recommended range of values for ESHI: [ (ESU + 5ESH)/6, (ESU + 3ESH)/4]

FSHI

Tensile stress at point on strain hardening curve corresponding to ESHI

OmegaFac

Roundedness factor for Bauschinger curve in cycle reversals from the strain hardening curve. Range: [0.75, 1.15]. Largest value tends to near a bilinear Bauschinger curve. Default = 1.0.

Note: Stresses and strains are defined in engineering terms, as they are reported in a tensile test.


Examples:


References:

Code Developed by : L.L. Dodd & J.I. Restrepo

Dodd, L. L. and Restrepo-Posada, J. I. (1995). Model for Predicting Cyclic Behaviour of Reinforcing Steel. ASCE Journal of Structural Engineering, V.121, No 3, pp. 433-445.

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