43 real(dp),
intent(in) :: sigma_val
46 real(dp),
parameter :: sm_coeff_1 = 8.5112e-15_dp, &
47 sm_coeff_2 = 8.1643e-25_dp, &
48 sm_coeff_3 = 9.2594e-12_dp
55 creep = sigma_val*sigma_val
60 creep = sigma_val**0.8_dp * gr_size**(-1.4_dp)
65 creep = sigma_val*sigma_val*sigma_val
74 creep = sigma_val*sigma_val + sigma_res*sigma_res
79 creep = (sigma_val**0.8_dp + sigma_res**0.8_dp) * gr_size**(-1.4_dp)
85 creep = sigma_val*sigma_val*sigma_val + sigma_res*sigma_res*sigma_res
95 + sm_coeff_2 * (sigma_val*sigma_val) &
96 * (1.0_dp + sm_coeff_3 * (sigma_val*sigma_val))