/INTER/TYPE3
Block Format Keyword This interface is used to simulate impacts between two surfaces (with oriented segments). This interface works properly if the two surfaces are simply convex.
Description
- The segment normals must be oriented from one surface to the other
- Only works with segments connected to solid or shell elements
- The same node may not be put in the two impact surfaces
Format
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
---|---|---|---|---|---|---|---|---|---|
/INTER/TYPE3/inter_ID/unit_ID | |||||||||
inter_title | |||||||||
surf_ID1 | surf_ID2 | Idel | |||||||
Stfac | Fric | Gap | Tstart | Tstop | |||||
IBC | IRS | IRm | |||||||
Definitions
Field | Contents | SI Unit Example |
---|---|---|
inter_ID | Interface
identifier. (Integer, maximum 10 digits) |
|
unit_ID | Unit identifier. (Integer, maximum 10 digits) |
|
inter_title | Interface
title. (Character, maximum 100 characters) |
|
surf_ID1 | First surface
identifier. (Integer) |
|
surf_ID2 | Second surface
identifier. (Integer) |
|
Idel | Node and segment deletion flag.
(Integer) |
|
Stfac | Interface stiffness scale
factor must be less than 1.0. Default = 0.2 (Real) |
|
Fric | Coulomb
friction. (Real) |
|
Gap | Gap for impact
activation. (Real) |
|
Tstart | Start time for contact
impact computation. (Real) |
|
Tstop | Time for temporary
deactivation. (Real) |
|
IBC | Deactivation flag of
boundary conditions at impact. (Boolean) |
|
IRS | Renumbering flag for
segments of the first surface.
(Integer) |
|
IRm | Renumbering flag for
segments of the second surface (same as IRS).
(Integer) |
|
Maximum tangential
pressure. 4
Generally, is defined as yield stress. Default = 1030 (Real) |
Flags for Deactivation of Boundary Conditions: IBC
(1)-1 | (1)-2 | (1)-3 | (1)-4 | (1)-5 | (1)-6 | (1)-7 | (1)-8 |
---|---|---|---|---|---|---|---|
IBCX | IBCY | IBCZ |
Definitions
Field | Contents | SI Unit Example |
---|---|---|
IBCX |
(Boolean) |
|
IBCY |
(Boolean) |
|
IBCZ |
(Boolean) |
Comments
- The flag Idel =1 has a CPU cost higher than Idel =2.
- If IBCX = 1, the boundary condition in X direction is deactivated. IBCY and IBCZ behave the same way respectively in Y and Z direction.
- Boundary conditions are only deactivated on surf_ID1.
- In 2D analysis, tangent contact force is
limited when
is defined by the following
equation:
(1) While, is extrapolated length of segments connected to the secondary node.