Issue 38

M. A. Meggiolaro et alii, Frattura ed Integrità Strutturale, 38 (2016) 128-134; DOI: 10.3221/IGF-ESIS.38.17

E  210GPa , Poisson ratio  0.3 , and Ramberg-Osgood parameters H c = 0.199 , using data reported in [14]. For the EP calculations all simulations were carried out using ANSYS software, using the SOLID186 3D elements with 20 nodes each and 3 degrees of freedom per node. The model used for the EP FE simulations is illustrated in Fig. 2, and its notch tip grid is depicted in Fig. 3.  1736MPa and h c

Figure 2 : The FE model for the sharply notched shaft.

Figure 3 : The grid around the notch tip.

2

K K R

= 6.70 = 3.75

t σ

ε − non−deviatoric Neuber α U = 1

t τ

= 1.73

τσ

ε − non−deviatoric Glinka α U = 2

1 σ ( ) M ises/ ˜ σ (˜) M ises 1.5

ε − deviatoric UNR α U = 1.979

ε − Non−Linear FE

σ − non−deviatoric Neuber α U = 1

σ − Non−Linear FE

σ − non−deviatoric Glinka α U = 2

σ − deviatoric UNR α U = 1.979

0.5

0

0.5

1

1.5

2

˜ σ Mises

/S Y

Figure 4 : Predicted and FE-calculated EP strain and stress.

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