/INTER/TYPE14
Block Format Keyword This interface simulates impacts between a hyper-ellipsoidal rigid main surface and a list of secondary nodes. The hyper-ellipsoidal surface is treated as an analytical surface (hyper-ellipsoidal surfaces are only discretized for post-processing).
For this interface, generally, use a mesh whose size is finer than the lowest semi- axis of main surface. The main surface must be a MADYMO hyper-ellipsoidal surface or a Radioss hyper-ellipsoidal surface.
Format
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
---|---|---|---|---|---|---|---|---|---|
/INTER/TYPE14/inter_ID/unit_ID | |||||||||
inter_title | |||||||||
grnd_IDs | surf_IDm | fct_IDld | fct_IDf | fct_IDd1 | fct_IDd2 | ||||
Stif | Fric | Visc | Gap |
Definition
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) |
|
grnd_IDs | Secondary nodes group
identifier. (Integer) |
|
surf_IDm | Main surface
identifier. (Integer) |
|
fct_IDld | Elastic force versus
penetration function identifier. (Integer) |
|
fct_IDf | Friction coefficient
versus elastic force function identifier. Default = 1 (Integer) |
|
fct_IDd1 | Damping coefficient versus
normal velocity function identifier. Default = 1 (Integer) |
|
fct_IDd2 | Damping coefficient versus
elastic force function identifier. Default = 1 (Integer) |
|
Stif | Interface stiffness. No default (Real) |
|
Fric | Friction coefficient. No default (Real) |
|
Visc | Normal viscosity
coefficient. No default (Real) |
|
Gap | Gap for impact
activation. No default (Real) |
Comments
- Elastic force is defined
as:
(1) While,
, if fct_IDld is 0
, otherwise is function of fct_IDld
- Tangential force is defined
as:
(2) With is function of fct_IDf
- Damping force is defined
as:
(3) With, being the normal velocity of the secondary node:(4) and are functions of fct_IDd1 and fct_IDd2.