Searched refs:I_2 (Results 1 – 2 of 2) sorted by relevance
496 const CeedScalar I_2 = 0.5 * (I_1 * I_1 - tr_CC); in ElasFSEnergy_MR() local500 …) * (logJ) - (mu_1 + 2 * mu_2) * logJ + (mu_1 / 2.) * (I_1 - 3) + (mu_2 / 2.) * (I_2 - 3)) * wdetJ; in ElasFSEnergy_MR()605 const CeedScalar I_2 = 0.5 * (pow(I_1, 2) - tr_CC); in ElasFSDiagnostic_MR() local608 …mbda * logJ * logJ - (mu_1 + 2 * mu_2) * logJ + (mu_1 / 2.) * (I_1 - 3) + (mu_2 / 2.) * (I_2 - 3)); in ElasFSDiagnostic_MR()
321 …and $J$, Mooney-Rivlin models depend on the additional invariant, $\mathbb I_2 = \frac 1 2 (\mathb…325 …}, \mathbb{I_2}, J) = \frac{\lambda}{2}(\log J)^2 - (\mu_1 + 2\mu_2) \log J + \frac{\mu_1}{2}(\mat…341 \frac{\partial \mathbb{I_1}}{\partial \bm E} &= 2 \bm I_3, & \frac{\partial \mathbb{I_2}}{\partial …