4.2.2 Uniaxial

The uniaxial nonlinear elasticity model is only for use with beam and truss elements.

    (syntax)

ELAST

UNIAXI specifies a uniaxial stress-strain model.

SIGEPS

specifies the $\sigma$ - $\varepsilon$ diagram with sig0 to sign the stresses $\sigma_{{0}}^{}$ to $\sigma_{{n}}^{}$ , eps0 to epsn are the corresponding strains $\varepsilon_{{0}}^{}$ to $\varepsilon_{{n}}^{}$ . (n $\leq$ 25 )The diagram must start in compression (negative) and end in tension (positive).

    (file.dat)

   1  YOUNG  3000.
      ELAST  UNIAXI
      SIGEPS -150. -0.1   0. 0.   300. 0.1   5000. 1.0