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Reference Guide
This manual provides a detailed list of all the input keywords and options available in Radioss.
LS-DYNA Input
This manual provides a list of LS-DYNA input files available in Radioss.
*CONTACT
*CONTACT_ERODING_NODES_TO_SURFACE
LS-DYNA Input Interface KeywordDefine nodes to surface contact interface.

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Radioss^® is a leading explicit finite element solver for crash and impact simulation.
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This manual provides details on the features, functionality, and simulation methods available in Altair Radioss.
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This manual provides a detailed list of all the input keywords and options available in Radioss.
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  Current Radioss format uses the 12x extension format.
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  This manual provides a list of all the model definition keywords and options available in Radioss.
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  This manual provides a list of all the solution definition keywords and options available in Radioss.
- LS-DYNA Input
  This manual provides a list of LS-DYNA input files available in Radioss.
  - *AIRBAG
  - *BOUNDARY
  - *CONSTRAINED
  - *CONTACT
    - *CONTACT_AUTOMATIC_GENERAL
      LS-DYNA Input Interface KeywordDefine an automatic general contact interface between elements.
    - *CONTACT_AUTOMATIC_NODES_TO_SURFACE
      LS-DYNA Input Interface KeywordDefine nodes to surface contact interface.
    - *CONTACT_AUTOMATIC_SINGLE_SURFACE
      LS-DYNA Input Interface KeywordDefine automatic single contact interface between elements.
    - *CONTACT_AUTOMATIC_SURFACE_TO_SURFACE
      LS-DYNA Input Interface KeywordDefine surface to surface contact between a set of shell and solid elements.
    - *CONTACT_ERODING_NODES_TO_SURFACE
      LS-DYNA Input Interface KeywordDefine nodes to surface contact interface.
    - *CONTACT_ERODING_SINGLE_SURFACE
      LS-DYNA Input Interface KeywordDefine automatic single contact interface set of shell and solid elements.
    - *CONTACT_ERODING_SURFACE_TO_SURFACE
      LS-DYNA Input Interface KeywordDefine surface to surface contact between a set of shell and solid elements.
    - *CONTACT_FORCE_TRANSDUCER_PENALTY
      LS-DYNA Input Interface KeywordAccumulates output for contact forces (from other existing contacts) acting on a given set of nodes/segments determined by set, part or subset with optional selection of interacting main side contact entities and intersection between sets and boxes.
    - *CONTACT_INTERIOR
      LS-DYNA Input Interface KeywordDefine an interior contact for each part defined in the defined set of parts.
    - *CONTACT_NODES_TO_SURFACE
      LS-DYNA Input Interface KeywordDefine nodes to surface contact interface.
    - *CONTACT_SPOTWELD
      LS-DYNA Input Interface KeywordDefine nodes to surface contact interface dedicated for spotweld connection.
    - *CONTACT_TIEBREAK
      LS-DYNA Input Interface KeywordDefines tied contact between entities without failure.
    - *CONTACT_TIED
      LS-DYNA Input Interface KeywordDefines tied contact between entities.
  - *CONTROL
  - *DAMPING
  - *DATABASE
  - *DEFINE
  - *ELEMENT
  - *EOS
  - *HOURGLASS
    LS-DYNA Input Interface KeywordDefine solid and hourglass formulation for 8-node solid elements.
  - *INCLUDE
  - *INITIAL
  - *INTEGRATION_SHELL
    LS-DYNA Input Interface KeywordDefine user-defined through the thickness integration rules for the composite shell element.
  - *KEYWORD
    LS-DYNA Input Interface KeywordThis keyword should always be the first card of the input file. Optionally used with *CONTROL_UNITS card to specify model units.
  - *LOAD
  - *MAT
  - *NODE
    LS-DYNA Input Interface KeywordDefines a node number and nodal coordinates in the global coordinate system.
  - *PART
    LS-DYNA Input Interface KeywordDefines a part, which combines material and property information.
  - *RIDIGWALL
  - *SECTION
  - *SET
- Optimization Keywords
  Optimization Keyword This manual contains the description of the keywords for the Radioss optimization. This manual is compatible with the version 2018 of Radioss.
- Multi-Domain
  This manual contains the description of the keywords for the Radioss Multi-Domain.
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- Definition
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Theory Manual
This manual provides detailed information about the theory used in the Altair Radioss Solver.
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*CONTACT_ERODING_NODES_TO_SURFACE

LS-DYNA Input Interface KeywordDefine nodes to surface contact interface.

Format


(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)
*CONTACT_ERODING_NODES_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`
Blank card

Optional Card A


(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)
`SOFT`

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 = 4 Node set 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
`SOFT`	Contact stiffness definition flag. = 0 Contact stiffness is the average of the main and secondary stiffness. > 0 Contact stiffness is the minimum of the main and secondary stiffness. (Integer)

Comments

This keyword maps to /INTER/TYPE25.