History Variables for Certain Material Models
Below, a table including history variables of certain material models available in LS-DYNA is given.
There is no guarantee for completeness and correctness in connection with the release you use. For binding information please contact your local LS-DYNA distributor.
In the following description, the notation 'eqp' corresponds to the variable 'plastic strain' in LS-Prepost.
|
material | no. | shells | no. | solids |
|---|---|---|---|---|
| *MAT_002 | eqp 1 2 3 4 5 6 7 8 9 10 11 12 | stiffness component C11 stiffness component C12 stiffness component C13 stiffness component C14 stiffness component C22 stiffness component C23 stiffness component C24 stiffness component C33 stiffness component C34 stiffness component C44 stiffness component C55 stiffness component C56 stiffness component C66 | 1..9 | deformation gradient |
| *MAT_003 | 1 2 3 4 5 | back stress component xx back stress component yy back stress component xy back stress component yz back stress component zx | 1 2 3 4 5 | back stress component xx back stress component yy back stress component xy back stress component yz back stress component zx |
| *MAT_004 | 3 | temperature | 3 | temperature |
| *MAT_007 | 1..9 | deformation gradient | ||
| *MAT_015 | 1 3 4 5 6 | failure value current pressure cutoff JC damage parameter temperature change JC failure strain | 5 6 | temperature change JC damage parameter |
| *MAT_017 | 4 11 12 | fracture flag fracture stress element size | ||
| *MAT_019 (VP=0) | 1 2 3 4 | ratio of hisvar 2 to hisvar 3 current failure component given failure component effective strain rate | 1 2 3 4 | ratio of hisvar 2 to hisvar 3 current failure component given failure component effective strain rate |
| *MAT_021 | 15 | temperature | 15 | temperature |
| *MAT_022 (LAMSHT=1) | eqp 1 2 3 4 | failure flag tensile fiber mode failure flag tensile matrix mode failure flag compr. matrix mode material direction cosine material direction sinus | 1 2 3 | failure flag tensile fiber mode failure flag tensile matrix mode failure flag compr. matrix mode |
| *MAT_024 | 1 4 5 | effective strain rate current hardening slope current yield stress | 1 4 5 | effective strain rate current hardening slope current yield stress |
| *MAT_025 | 1 2 3 4 5 6 7 | hardening variable K cap - J1-axis interception, X(K) volumetric plastic strain first stress invariant second stress invariant response mode number number of iterations | ||
| *MAT_034 (FORM=14) | 3 4 5 6 7 8 | local stress fiber a local stress fiber b local shear stress local strain fiber a local strain fiber b local shear strain | ||
| *MAT_036 | 1 3 4 6 7 8 | reverse of old yield stress material direction cosine material direction sinus effective strain rate current yield stress current hardening slope | ||
| *MAT_037 | 2 3 | current hardening slope current yield stress | ||
| *MAT_054 (LAMSHT=1) | 1 2 3 4 5 6 8 9 10 11 12 16 | failure flag tensile fiber mode failure flag compr. fiber mode failure flag tensile matrix mode failure flag compr. matrix mode total failure damage parameter (SOFT) material direction cosine material direction sinus local fiber strain local matrix strain local shear strain transverse shear damage | ||
| *MAT_055 (LAMSHT=1) | 1 2 3 4 5 6 8 9 10 11 12 | failure flag tensile fiber mode failure flag compr. fiber mode failure flag tensile matrix mode failure flag compr. matrix mode total failure damage parameter (SOFT) material direction cosine material direction sinus local fiber strain local matrix strain local shear strain | ||
| *MAT_058 | 1 2 3 4 5 6 7 8 9 15 | damage in fiber direction damage in matrix direction damage in shear threshold failure value r1 threshold failure value r2 material direction cosine material direction sinus total failure threshold failure value rs effective strain | ||
| *MAT_059 | 4 5 6 7 | material direction cosine material direction sinus failure value damage | ||
| *MAT_063 | eqp 1 | volumetric strain ln(V) volumetric strain gamma=1-V | ||
| *MAT_065 | 6 | temperature change | 6 | temperature change |
| *MAT_081 | 1 4 5 | damage current hardening slope current yield stress | 1 4 5 | damage current hardening slope current yield stress |
| *MAT_082 | 1 4 5 6 10 11 12 | damage 1 current hardening slope current yield stress damage 2 material direction cosine material direction sinus Wilkins damage (only _RCDC) | 1 2 3 6 7 | damage 1 damage 2 damage 3 current hardening slope current yield stress |
| *MAT_083 | 15 16 17 | 1st principal strain rate 2nd principal strain rate 3rd principal strain rate | ||
| *MAT_089 | 1 4 5 7 19 21 | effective strain rate filtered strain rate maximum strain rate failure strain total effective strain damage | 1 4 5 7 19 21 | effective strain rate filtered strain rate maximum strain rate failure strain total effective strain damage |
| *MAT_096 | eqp 1 2 3 4 | normalized internal variable alpha internal variable alpha 1-direction of crack normal 2-direction of crack normal 3-direction of crack normal | ||
| *MAT_098 | 1 1 | effective strain rate (VP=0) failure flag (VP=1) | ||
| *MAT_100 | 8 10 | damage effective strain rate | ||
| *MAT_101 | 5 7 9 | strain rate failure flag current unloading modulus | ||
| *MAT_103 | 13 14 | material direction cosine material direction sinus | ||
| *MAT_104 | 1 2 3 | current yield stress current hardening slope damage | 1 2 3 | current yield stress current hardening slope damage |
| *MAT_105 | 1 | damage | 1 | damage |
| *MAT_106 | 1 2 3 4 5 6 | temperature Young's modulus Poisson's ratio yield stress isotropic scaling factor kinematic scaling factor | 1 2 3 4 5 6 | temperature Young's modulus Poisson's ratio yield stress isotropic scaling factor kinematic scaling factor |
| *MAT_110 | 1 | bulking pressure increment due to energy loss | ||
| *MAT_120 | 1 4 5 6 7 11 13 14 | void volume fraction triaxiality effective strain rate growth of voids nucleation of voids material damage deviatoric microscopic pl. strain volumetric macroscopic pl. strain | 1 2 3 4 5 11 13 14 | void volume fraction triaxiality effective strain rate growth of voids nucleation of voids material damage deviatoric microscopic pl. strain volumetric macroscopic pl. strain |
| *MAT_120_JC | 1 4 5 6 7 8 9 10 11 13 14 | void volume fraction triaxiality effective strain rate growth of voids nucleation of voids JC failure strain JC damage domain variable material damage deviatoric microscopic pl. strain volumetric macroscopic pl. strain | 1 2 3 4 5 6 7 8 11 13 14 | void volume fraction triaxiality effective strain rate growth of voids nucleation of voids JC failure strain JC damage domain variable material damage deviatoric microscopic pl. strain volumetric macroscopic pl. strain |
| *MAT_120_RC.. | 1 2 3 6 7 8 12 | void volume fraction damage critical damage fracture fraction trial stress weighting term asymmetric strain weighting term damage slope | 1 2 3 4 5 6 10 | void volume fraction damage critical damage fracture fraction trial stress weighting term asymmetric strain weighting term damage slope |
| *MAT_123 | 1 6 7 | effective strain rate thinning strain major in plane strain | 1 7 | effective strain rate major principal strain |
| *MAT_126 | eqp | relative volume | ||
| *MAT_133 | 6 | strain rate | ||
| *MAT_138 | eqp | damage | ||
| *MAT_143 | 7 8 9 10 | damage, parallel tension damage, parallel compression damage, perpendicular tension damage, perpendicular compression | ||
| *MAT_159 | eqp 3 4 | misc. (see manual) ductile damage brittle damage | ||
| *MAT_169 | 1 | damage | ||
| *MAT_186 | 1 3 4 5 | effective separation parameter stiffness in 1-direction stiffness in 2-direction stiffness in 3-direction | ||
| *MAT_187 | 1 2 3 4 5 | accumulated plastic multiplier eq. plastic strain tension/compr. eq. plastic strain shear eq. plastic strain biaxial damage | 1 2 3 4 5 | accumulated plastic multiplier eq. plastic strain tension/compr. eq. plastic strain shear eq. plastic strain biaxial damage |
| *MAT_221 | eqp 1 2 3 4 5 6 7 8 | damage in traction along a damage in traction along b damage in traction along c damage in compression along a damage in compression along b damage in compression along c shear damage in ab-plane shear damage in bc-plane shear damage in ac-plane | ||
| *MAT_224 | 1 7 8 9 10 11 12 | plastic strain rate plastic work ratio of pl. strain to pl. failure strain element size temperature plastic failure strain triaxiality | 5 8 9 10 11 12 13 14 | plastic strain rate plastic failure strain triaxiality Lode angle plastic work ratio of pl. strain to pl. failure strain element size temperature |
| *MAT_234 | 1 2 3 | material direction cosine material direction sinus degradation coefficient | ||
| *MAT_235 | 1 2 3 4 13 | braid angle (fill) braid angle (warp) undulation angle (fill) undulation angle (warp) discount factor | ||
| *MAT_240 | 1 2 3 4 | damage failure flag reference strain rate thickness |
