In this section ParaGeo data structures relevant to the definition of contact data are described. Contact can be defined for all fields; mechanical, fluid flow and thermal flow. The available data structures are:

 

•Contact_global defining the contact sets that will be active for the simulation, whether flow and thermal fields are active, etc.

•Contact_set defining general contact algorithm properties, geometry sets for which contact is active, etc.

•Contact_surface to establish potential contact relationships for a given geometry set with other geometry sets included in the contact set.

•Contact_property defining active contact models and their relevant properties.

 

 

Notes:

In the results plot file, the meaning of the following contact flags are as follows:

•Contact Flag (contact state variable id "C_cont_f")

0 = No contact

1 = Compressive contact (with penetration)

-1 = Adhesive contact (with adhesive separation)

 

•Contact Slip Stick (contact state variable id "C_slip_f")

1 = Sticking contact

2 = Slip/Contact with sliding

 

•Contact Bonding Flag (contact state variable id "C_Bondfg")

0 = Bonded

1 = Damaged/Debonding

2 = Debonded fully (i.e. Contact Flag = 0 when this happens)

 

 

 

 

Examples

 

Tutorial examples demonstrating usage of the contact data are:

 

Cont_001: Mechanical Contact Example

 

Cont_002: Flow and Thermal Contact Example

 

Ex_001: Contact Mechanical Models

 

THM_001: Coupled Thermo-Hydro-Mechanical contact example

 

Geost_002: Staged initialization of a graben

 

Rest_002: Restoration and forward modelling of a normal fault