2021

2021

*CONTACT_AUTOMATIC_SURFACE_TO_SURFACE

LS-DYNA Input Interface KeywordThis keyword defines surface to surface contact between a set of shell and solid elements.

Format

(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)
*CONTACT_AUTOMATIC_SURFACE_TO_SURFACE _{OPTION3}

If Option3 = ID, insert the following line.

(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)
`inter_ID`	`Title`

(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)
`SSID`	`MSID`	`SSTYP`	`MSTYP`
`FS`	`FD`	`DC`				`Tstart`	`Tstop`
`SFS`	`SFM`	`SST`	`MST`	`SFTS`	`SFMT`	`FSF`

Definition

Field	Contents	SI Unit Example
`OPTION3`	ID Include a contact identifier and title
`inter_ID`	Contact interface identifier (Integer)
`Title`	Contact interface title (Character, maximum 70 characters)
`SSID`	Secondary set or part identifier (Integer)
`MSID`	Main set or part identifier (Integer)
`SSTYP`	Input secondary set type = 0 Segment set ID = 1 Shell element set ID = 2 Part set ID = 3 Part ID = 5 All parts (SID is ignored) = 6 Part set ID. All parts are included in the contact except the one defined in the part set ID = 7 Subset set ID (Integer)
`MSTYP`	Input main set type = 0 Segment set ID = 1 Shell element set ID = 2 Part set ID = 3 Part ID = 5 All parts (`SID` is ignored) = 6 Part set ID. All parts are included in the contact except the one defined in the part set ID = 7 Subset set ID (Integer)
`FS`	Static friction coefficient (Real)
`FD`	Dynamic friction coefficient (Real)
`DC`	Exponential decay coefficient	$[\frac{s}{m}]$
`Tstart`	Start time (Real)	$[s]$
`Tstop`	Stop time Default = 1E+30 (Real)	$[s]$
`SFS`	Secondary stiffness scale factor (Real)
`SFM`	Main stiffness scale factor (Real)
`SST`	Secondary maximum gap value (Real)	$[m]$
`MST`	Main maximum gap value (Real)	$[m]$
`SFTS`	Secondary contact gap scale (Real)
`SFMT`	Main contact gap scale (Real)
`FSF`	Coulomb friction coefficient scale factor

Comments

This keyword maps to /INTER/TYPE25.