/INTER/TYPE15
Block Format Keyword This interface is Ellipsoidal Surfaces to Elements Contact. It is a penalty contact interface without damping. This interface replaces interface TYPE14, especially if the mesh is coarser than the ellipsoid size.
The secondary surface must be a set of 3-node or 4-node segments (i.e. any kind of surface; except ELLIPS and MDELLIPS surfaces). The main surface must be a MADYMO hyper-ellipsoidal surface or a Radioss hyper-ellipsoidal surface, and Interface does not allow penetrations up to half the ellipsoid.
Format
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
|---|---|---|---|---|---|---|---|---|---|
| /INTER/TYPE15/inter_ID/unit_ID | |||||||||
| inter_title | |||||||||
| surf_IDs | surf_IDm | ||||||||
| Stif | Fric | ||||||||
Definitions
| Field | Contents | SI Unit Example |
|---|---|---|
| inter_ID | Interface
identifier (Integer, maximum 10 digits) |
|
| unit_ID | unit_ID (Integer, maximum 10 digits) |
|
| inter_title | Interface
title (Character, maximum 100 characters) |
|
| surf_IDs | Secondary surface
identifier. (Integer) |
|
| surf_IDm | Main surface
identifier. (Integer) |
|
| Stif | Stiffness factor. No default (Real) |
|
| Fric | Friction coefficient. No default (Real) |
Comments
- Interface stiffness is a nonlinear increasing function of penetration. Stif is the interface stiffness when the element enters the hyper-ellipsoid (that is when penetration is zero).