MATARU
Bulk Data Entry Defines parameters required for modelling an elasto-plastic, rate-dependent failure in an adhesive material.
Format
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
|---|---|---|---|---|---|---|---|---|---|
| MATARU | MID | E | NU | RHO | |||||
| SIGNMAX | GCN | SIGSMAX | GCS | SHRP | SH_SNL | ||||
| PWRN | PWRS | EDOT0 | EDOT1 | SDFAC | SGFAC |
Definitions
| Field | Contents | SI Unit Example |
|---|---|---|
| MID | Material identification
number. No default (Integer > 0) |
|
| E | Young's modulus. No default (Real > 0.0) |
|
| NU | Poisson’s ratio. No default (Real > 0.0) |
|
| RHO | Mass density. No default (Real > 0.0) |
|
| SIGNMAX | Maximum stress in normal
direction. Default = 1.E20 (Real > 0.0) |
|
| SIGSMAX | Maximum stress in shear
direction. Default = 1.E20 (Real > 0.0) |
|
| GCN | Energy release rate in normal
direction. Default = 1.E20 (Real > 0.0) |
|
| GCS | Energy release rate in shear
direction. Default = 1.E20 (Real > 0.0) |
|
| SHRP | Shear plateau ratio. Default = 0.0 (Real > 0.0) |
|
| SH_SNL | Slope of yield surface for zero
tension. Default = 0.0 (Real > 0.0) |
|
| PWRN | Power law term for normal
direction. Default = 2.0 ( > 0.0) |
|
| PWRS | Power law term for shear
direction. Default = 2.0 (Real > 0.0) |
|
| EDOT0 | Strain rate at which the static
properties apply. Default = 1.0 (Real > 0.0) |
|
| EDOT1 | Strain rate at which the dynamic
properties apply. Default = 1.0 (Real > 0.0) |
|
| SDFAC | Factor on
SIGNMAX and SIGSMAX at
strain rate EDOT1. Default = 1.0 (Real > 0.0) |
|
| SGFAC | Factor on GCN
and GCS at strain rate
EDOT1. Default = 1.0 (Real > 0.0) |
Comments
- MATARU must be used together with 3D interface elements CIFHEX/CIFPEN and cohesive element property PCOHE.
- Material response is similar to MCOHED up to yield and then differs according to the failure model defined.
- Adhesive thickness direction is assumed to be elemental Z- or element thickness direction.