Table of Contents
Defining contact elements
Defining contact element is done is the same way as volume elements. First, a contact material is defined (without friction, sticking, …), then the material is included in an ElementProperties (Contact2DElement ou Contact3DElement), elements which are finally generated over the mesh with contact interactions (rigid-defo, defo-defo, …).
Materials
First, a contact material:
materialno = materialset.define (number, type) materialno = materialset(number) materialno.put(param, value) materialno.depend(param, fct, Key(Lock))) ...
number | contact material number (must be unique for all element in materialset, not just for contact materials) |
type | type of contact material (for example FrictionlessContactMaterial) - see Contact materials |
param | name of a contact parameter (for example PEN_NORMALE) |
value | value of the corresponding parameter |
fct | function which characterizes the dependency of the property (optional: no fct if no dependency) |
Lock | Lock which defines the dependency variable of the property (compulsory if there is a dependency) |
All contact materials and corresponding parameters are found page Contact materials.
Elements
Second, contact elements are defined with ElementProperties, and the contact material is included.
prp = ElementProperties(typeEl) prp.put(param1, value1) prp.depend(param1, fct1, Lock1)) #optional ...
where
typeEl | desired contact element (for example Contact[2|3]DElement) |
param1 | name of the property associated to the element (for example MATERIAL to associate the desired material) |
value1 | value of the corresponding property |
fct1 | function which characterizes the dependency of the property (optional: no fct if no dependency) |
Lock1 | Lock which defines the dependency variable of the property (compulsory if there is a dependency) |
Contact elements and their parameters are found page Contact elements.
Interactions
Finally, contact elements are generated using Interactions. Several interactions exist, depending on the type of contact (rigid-defo, defo-defo, …). These interactions are the code used to generate them are found page Contact Interactions.
For example, to generate rigid-defo contact, RdContactInteraction is used :
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 |
setSmoothNormals(bool) | Facetised tool = True (default) : continuous normal - projection on a MultiProjWire or MultiprojSkin= False : discontinuous normal - projection on Wire or Skin |