Users:General FEM Analysis/Materials Reference/Puck Failure Criterion
From Carat++ Public Wiki
(Difference between revisions)
| Line 70: | Line 70: | ||
!NUE12F | !NUE12F | ||
|real | |real | ||
| − | |Poisson’s ratio for fibres. (De f ault = 0.2) | + | |Poisson’s ratio for fibres. (''De f ault'' = 0.2) |
|- | |- | ||
!MGF | !MGF | ||
|real | |real | ||
| − | |Amplification factor (De f ault = 1.2) | + | |Amplification factor (''De f ault'' = 1.2) |
|- | |- | ||
!S, M | !S, M | ||
Revision as of 09:02, 8 February 2013
General Description
It is based on Mohr‘s fracture hypothesis which is appropriate for brittle fracture behaviour of composite materials. It can distinguish between fibre fracture and different inter-fibre fracture. Both 2D and 3D formulations are implemented into Carat++. Available fracture modes for 2D Puck Criterion are:
- Fibre Fracture (FF)
- Inter Fibre Fracture Mode A (IFF A)
- Inter Fibre Fracture Mode B (IFF B)
- Inter Fibre Fracture Mode C (IFF C)
Available fracture modes for 3D Puck Criterion are:
- Fibre Fracture (FF)
- Inter Fibre Fracture (IFF)
Parameter Description
| Compulsory Parameters | ||
| Parameter | Values, Default(*) | Description |
|---|---|---|
| EF | real | Elasticity modulus of the fibres |
| RTL | real | Resistance to longitudinal tension (Direction 1) |
| RCL | real | Resistance to longitudinal compression (Direction 1) |
| RTT | real | Resistance to transverse tension (Direction 2) |
| RCT | real | Resistance to transverse compression (Direction 2) |
| RSL | real | Resistance to longitudinal shear |
| VFF | real | Volume fraction of the fibres |
| PTTL | real | Inclination parameter, p |
| PCTL | real | Inclination parameter, p |
| Optional Parameters | ||
| Parameter | Values, Default(*) | Description |
| STRESS TYPE | 2D, 3D | Indicates what kind of stress state should be used to calculate the failure condition. When not given, related element’s stress type is taken. |
| NUE12F | real | Poisson’s ratio for fibres. (De f ault = 0.2) |
| MGF | real | Amplification factor (De f ault = 1.2) |
| S, M | real | Parameters necessary for calculation of weakening due to _1. (De f ault = S = M = 0.5) |
| PTT | real | Inclination parameter p??. When not given, calculated using the strength values. See Section 3.1.2.3 |
| WEAKENING | int | Switch for calculation of weakening due to _1.
|
| FPS | SWS*, GSS | Switch for fracture plane search algorithm.
|
| FPS_SWS_SIZE | real | Step size for step-wise fracture plane search |
| Whos here now: Members 0 Guests 0 Bots & Crawlers 1 |
