doc:user:elements:contact:interactions
Table of Contents
Contact Interactions
Contact elements are generated on the mesh using Interactions described below, in the same way as volume elements.
Rigid-Defo contact
Interaction between a rigid body (die), meshed or not, and a deformable meshed entity.
ci = RdContactInteraction(number) ci.setTool(gObject1) ci.push(gObject2) ci.setSmoothNormals(bool) ci.addProperty(prp) interactionset.add(ci)
where
number | number of the Interaction |
gObject1 | Reference of a geometric object (facetised contact), meshed or not |
gObject2 | Reference of a meshed geometric object |
prp | Properties of contact elements to generate |
setTool | Rigid tools |
setUseMultiProj(bool) Revision >= v3542 | Option only used with meshed (facetised) tool = True (default) : use of multiple projection operator : MultiProjWire or MultiprojSkin. The unification of the normal depend of smoothNormal parameter value = False : use Single projection operator Wire or Skin designed for C1 geometrical tools (tool MUST RESPECT the normal continuity) |
setSmoothNormals(bool) Revision >= v3542 | Option only used with meshed (facetised) tool AND if useMultiProj = True = True (default) : unify multiple projection with a smoothed normal formulation = False : select the best projection as an unique projection (assume discontinuity) |
setSmoothNormals(bool) OLD Revision < v3542 | Facetised tool = True (default) : continuous normal - projection on a MultiProjWire or MultiprojSkin= False : discontinuous normal - projection on Wire or Skin |
Defo-Defo contact
Interaction between two different deformable meshed entities. By default, contact is double in two steps. First, the nodes from the second body are considered as slaves of the first body, then, nodes from the first are considered as slaves of the second.
ci = DdContactInteraction(number) ci.setTool(gObject1) ci.push(gObject2) ci.setSmoothNormals(bool) ci.setGeoContact() ci.setSinglePass() ci.addProperty(prp) interactionset.add(ci)
where
number | number of the Interaction |
gObject1, gObject2 | Reference of a meshed geometric object |
prp | Properties of contact elements to generate |
setTool | “Preferential” tool (tool in one step and for thermomechanical contact) |
setSmoothNormals(bool) | Facetised tool = True (default) : continuous normal - projection on a MultiProjWire or MultiprojSkin= False : discontinuous normal (normal not smoothed, might lead to convergence issue)- projection on Wire or Skin |
setSinglePass() | Contact in one step (Nodes from second body are slaves of the first one) |
setGeoContact() | Contact between nodes of the second body and a spline rebuild from nodes of the first body |
Auto - Contact
Interaction between two parts of a same meshed body.
ci = ScContactInteraction(number) ci.push(gObject1) ci.setSmoothNormals(bool) ci.addProperty(prp) interactionset.add(ci)
where
number | number of the Interaction |
gObject1 | Reference of a meshed geometric object |
prp | Properties of contact elements to generate |
setSmoothNormals(bool) | Facetised tool = True (default) : continuous normal - projection on a MultiProjWire or MultiprojSkin= False : discontinuous normal - projection on Wire or Skin |
Rigid-Defo contact driven with a force
Interaction between a rigid body (die) and a deformable meshed entity. When this contact interaction is instantiated, the rigid body gets a node to impose force monitoring. Consequently, the body has rigid body modes in translation.
ci = FdRdContactInteraction(number) ci.setTool(gObject1) ci.push(gObject2) ci.setSmoothNormals(bool) ci.addProperty(prp) interactionset.add(ci)
where
number | number of the Interaction |
gObject1 | Reference of a geometric object (facetised contact), meshed or not |
gObject2 | Reference of a meshed geometric object |
prp | Properties of contact elements to generate |
setTool | Rigid tools |
setSmoothNormals(bool) | Facetised tool = True (default) : continuous normal - projection on a MultiProjWire or MultiprojSkin= False : discontinuous normal - projection on Wire or Skin |
doc/user/elements/contact/interactions.txt · Last modified: 2024/10/24 15:38 by papeleux