Differences

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--- doc:user:elements:contact:elements [2017/06/16 18:37] – [Contact[2|3]DElement] papeleux
+++ doc:user:elements:contact:elements [2017/06/21 10:07] (current) – [Contact elements] papeleux
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 ====== Contact elements ======
+<note important>
+Revision 2950 : Change of the default value for AREAINCONTACT property : new default = AIC_ONCE (AIC_NO before revision 2950)
+</note>
 ===== Contact[2|3]DElement =====
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 | ''MATERIAL''    | Number of the [[doc:user:elements:contact:laws|contact material]] to consider |  -  |
 | ''STIFFMETHOD'' | Method used to compute the stiffness matrix\\ = ''STIFF_ANALYTIC'' : analytic matrix (default)\\ = ''STIFF_NUMERIC''  : numerical matrix          |  -  |
-| ''AREAINCONTACT''   | Parameter to taken into account the surface associated to a slave node to ponder contact forces : \\ Force = Penalty * gap * Area \\ = ''AIC_NO'' : not taking into account contact area (formally Area = 1.0) (:!: by default but not recommended) \\ = ''AIC_USER'' : Area = value given in ''USERCONTACTAREA'' property \\ = ''AIC_ONCE'' : Area  = "Slave node surface computed based on initial configuration" (:!: recommended in most cases) \\ = ''AIC_ONCEPERSTEP''  :  Area = "Slave node surface recomputed at the beginning of each time step (take into account Slave node surface variations using an explicit scheme (to use if friction depends on the contact area, for example using Tresca's law) \\ = ''AIC'' : Area = "Node contact surface computed at each mechanical iteration". The contact stiffness matrix is adapted to Area modification (connectivity of contact elements also adapted)|  -  |
+| ''AREAINCONTACT''   | Parameter to taken into account the surface associated to a slave node to ponder contact forces : \\ Force = Penalty * gap * Area \\ = ''AIC_NO'' : not taking into account contact area (formally Area = 1.0) (:!: by default until Rev2950) \\ = ''AIC_USER'' : Area = value given in ''USERCONTACTAREA'' property \\ = ''AIC_ONCE'' : Area  = "Slave node surface computed based on initial configuration" (:!: default since Rev2950) \\ = ''AIC_ONCEPERSTEP''  :  Area = "Slave node surface recomputed at the beginning of each time step (take into account Slave node surface variations using an explicit scheme (to use if friction depends on the contact area, for example using Tresca's law) \\ = ''AIC'' : Area = "Node contact surface computed at each mechanical iteration". The contact stiffness matrix is adapted to Area modification (connectivity of contact elements also adapted)|  -  |
 | ''USERCONTACTAREA'' | Contact Area Value for AIC_USER case  |  -  |
 | ''AREAINCONTACTMETHOD''   | Method used to compute the slave node surface used to ponder contact forces\\ = ''AICM_GEOPHYS'', 0 : the calculation of the area is based on a geometrical approach in the physical space (by default).\\ = ''AICM_GEOREF'', 1 : the calculation of the area is based on a geometrical approach in the reference space.\\ = ''AICM_CONS'',  2  : the calculation of the area is based on an energy approach. |  -  |
@@ Line 27: / Line 29: @@
 | ''MATERIAL''    |Number of the [[doc:user:elements:contact:laws|contact material]] to consider             |  -  |
 | ''STIFFMETHOD'' | Method used to compute the stiffness matrix\\ = ''STIFF_ANALYTIC'' : analytic matrix (default)\\ = ''STIFF_NUMERIC''  : numerical matrix           |  -  |
-| ''AREAINCONTACT''   | Parameter to taken into account the surface associated to a slave node to ponder contact forces : \\ Force = Penalty * gap * Area \\ = ''AIC_NO'' : not taking into account contact area (formally Area = 1.0) (:!: by default but not recommended) \\ = ''AIC_USER'' : Area = value given in ''USERCONTACTAREA'' property \\ = ''AIC_ONCE'' : Area  = "Slave node surface computed based on initial configuration" (:!: recommended in most cases) \\ = ''AIC_ONCEPERSTEP''  :  Area = "Slave node surface recomputed at the beginning of each time step (take into account Slave node surface variations using an explicit scheme (to use if friction depends on the contact area, for example using Tresca's law) \\ = ''AIC'' : Area = "Node contact surface computed at each mechanical iteration". The contact stiffness matrix is adapted to Area modification (connectivity of contact elements also adapted) |  -  |
+| ''AREAINCONTACT''   | Parameter to taken into account the surface associated to a slave node to ponder contact forces : \\ Force = Penalty * gap * Area \\ = ''AIC_NO'' : not taking into account contact area (formally Area = 1.0) (:!: by default until Rev2950) \\ = ''AIC_USER'' : Area = value given in ''USERCONTACTAREA'' property \\ = ''AIC_ONCE'' : Area  = "Slave node surface computed based on initial configuration" (:!: default since Rev2950) \\ = ''AIC_ONCEPERSTEP''  :  Area = "Slave node surface recomputed at the beginning of each time step (take into account Slave node surface variations using an explicit scheme (to use if friction depends on the contact area, for example using Tresca's law) \\ = ''AIC'' : Area = "Node contact surface computed at each mechanical iteration". The contact stiffness matrix is adapted to Area modification (connectivity of contact elements also adapted) |  -  |
 | ''USERCONTACTAREA''  | Contact Area Value for AIC_USER case |  -  |
 | ''PRECONNORMALGAP'' | Accuracy set on the normal gap when using the [[doc:user:elements:contact:lag_aug|augmented Lagrangian]]. By default, no value since the method is deactivated. |  -  |
 | ''PRECONTANGENTGAP'' | Accuracy set on the tangential gap when using the  [[doc:user:elements:contact:lag_aug|augmented Lagrangian]]. By default, no value since the method is deactivated.  |  -  |
 | ''TOOLTEMP'' | Temperature of the tool in  a rigid-defo configuration ( By default, 293.0K )  |  time  |