[ANSYS Meshing] Script Connection Friction

arpeedesign · July 7, 2016, 05:38

Hello all,
I'm scripting an epicycloid gear in 2D. I am able to create the required mesh and I'd like to set a frictional connection between the pins and the gear by using script. What are the functions or the syntaxes for that? Should I make named selections for each pin? What is the easiest solution for it?

Can anybody help me in these problems?

Best regards!
Arpad

Kapi · July 7, 2016, 19:51

Hi Arpad,

Are you using design modeler?
You have to do named selection for each pin in order to call them for connections.
named selection of bodies can be done like this:

Code:

var pin1 = ag.fm.Body(ag.fm.BodyCount-1);
pin1.Name = "Apin1"

show your code what you have done manually and what you want to achieve by script both in pics

Cheers
KAPI

arpeedesign · July 8, 2016, 07:17

Hey Kapi!

Thanks for the help. I didn't know this syntax. It's good for change the name of the geometry item in the part list. But I'd like to set Named Selections, as I mentioned in this thread. (NamedSel_DM_.PNG and NamedSel_DM_tree.PNG) I use them to make the mesh size and I have no idea how to creat them in the Design Modeler by script.

I attached the pics what I want to do with the connections. All of the connections are named like this: Contact Region x. So I thought I'd use this name to change bonded to frictional; friction coefficient to 0,07 and the interface treatment Adjust to Touch. OR if I can make the NamedSlections for every part and edge, then I could use them for set the contact and the target, after I changed the scoping method.

Thank you for helping me!

Best regards!
Arpad

Code:

//Accesing Mesh Control Properties
var Mesh_Mod = DS.Tree.FirstActiveBranch.MeshControlGroup;
DS.Script.SelectItems(""+Mesh_Mod.ID);

//Insert the edge sizing for Epicycloid
DS.Script.doInsertMeshSize(1)
ListView.ActivateItem("Scoping Method");
ListView.ItemValue = "Named Selection" ;
ListView.ActivateItem("Named Selection");
ListView.ItemValue = "Epicycloid" ;
ListView.ActivateItem("Type");
ListView.ItemValue = "Element Size" ;
ListView.ActivateItem("Element Size");
ListView.ItemValue = "0.1"
ListView.SelectedItem.IsChecked="false"

//Insert the infaltion for Epicycloid
DS.Script.doInsertInflation(1)
ListView.ActivateItem("Scoping Method");
ListView.ItemValue = "Named Selection" ;
ListView.ActivateItem("Named Selection");
ListView.ItemValue = "Epi_srf" ;
ListView.ActivateItem("Boundary Scoping Method");
ListView.ItemValue = "Named Selections" ;
ListView.ActivateItem("Boundary");
ListView.ItemValue = "Epicycloid" ;
ListView.ActivateItem("Inflation Option");
ListView.ItemValue = "First Layer Thickness" ;
ListView.ActivateItem("First Layer Height");
ListView.ItemValue = "0,1"
ListView.SelectedItem.IsChecked="false"
ListView.ActivateItem("Maximum Layers");
ListView.ItemValue = "6"
ListView.SelectedItem.IsChecked="false"
ListView.ActivateItem("Growth Rate");
ListView.ItemValue = "1,15"
ListView.SelectedItem.IsChecked="false"

//Insert the edge sizing for circle of the gear
DS.Script.doInsertMeshSize(1)
ListView.ActivateItem("Scoping Method");
ListView.ItemValue = "Named Selection" ;
ListView.ActivateItem("Named Selection");
ListView.ItemValue = "Epi_crc" ;
ListView.ActivateItem("Type");
ListView.ItemValue = "Element Size" ;
ListView.ActivateItem("Element Size");
ListView.ItemValue = "1"
ListView.SelectedItem.IsChecked="false"

//Insert the face sizing for the gear
DS.Script.doInsertMeshSize(1)
ListView.ActivateItem("Scoping Method");
ListView.ItemValue = "Named Selection" ;
ListView.ActivateItem("Named Selection");
ListView.ItemValue = "Epi_srf" ;
ListView.ActivateItem("Type");
ListView.ItemValue = "Element Size" ;
ListView.ActivateItem("Element Size");
ListView.ItemValue = "1"
ListView.SelectedItem.IsChecked="false"

//Insert the mesh method
DS.Script.doInsertMeshElementShape(1)
ListView.ActivateItem("Scoping Method");
ListView.ItemValue = "Named Selection" ;
ListView.ActivateItem("Named Selection");
ListView.ItemValue = "Gear_Body" ;
ListView.ActivateItem("Method");
ListView.ItemValue = "Triangles" ;

//Insert the edge sizing for external circle of the excenter
DS.Script.doInsertMeshSize(1)
ListView.ActivateItem("Scoping Method");
ListView.ItemValue = "Named Selection" ;
ListView.ActivateItem("Named Selection");
ListView.ItemValue = "Ex_ext_crc" ;
ListView.ActivateItem("Type");
ListView.ItemValue = "Element Size" ;
ListView.ActivateItem("Element Size");
ListView.ItemValue = "1"
ListView.SelectedItem.IsChecked="false"

//Insert the face sizing for the excenter
DS.Script.doInsertMeshSize(1)
ListView.ActivateItem("Scoping Method");
ListView.ItemValue = "Named Selection" ;
ListView.ActivateItem("Named Selection");
ListView.ItemValue = "Ex_srf" ;
ListView.ActivateItem("Type");
ListView.ItemValue = "Element Size" ;
ListView.ActivateItem("Element Size");
ListView.ItemValue = "1"
ListView.SelectedItem.IsChecked="false"

//Insert the face sizing for the pin
DS.Script.doInsertMeshSize(1)
ListView.ActivateItem("Scoping Method");
ListView.ItemValue = "Named Selection" ;
ListView.ActivateItem("Named Selection");
ListView.ItemValue = "Pin_srf" ;
ListView.ActivateItem("Type");
ListView.ItemValue = "Element Size" ;
ListView.ActivateItem("Element Size");
ListView.ItemValue = "0,5"
ListView.SelectedItem.IsChecked="false"

//Insert the mappesface for the pin
DS.Script.doInsertMeshMappedMeshing(1)
ListView.ActivateItem("Scoping Method");
ListView.ItemValue = "Named Selection" ;
ListView.ActivateItem("Named Selection");
ListView.ItemValue = "Pin_srf" ;

//Generate Mesh
DS.Script.doModelPreviewMeshFromToolbar(1)

//Accesing the boundary conditions properties
var Env = DS.Tree.FirstActiveBranch.Environment;

DS.Script.SelectItems(""+Env.ID);

//Creating Moment at the gear circle
DS.Script.doInsertEnvironmentFreeMoment(1)
ListView.ActivateItem("Scoping Method");

ListView.ItemValue = "Named Selection" ;
ListView.ActivateItem("Named Selection");
ListView.ItemValue = "Epi_crc" ;
ListView.ActivateItem("Magnitude");
ListView.ItemValue = "248000" ;
ListView.SelectedItem.IsChecked="false"

//Insert the fixed support on pin
DS.Script.doInsertEnvironmentFixedDisplacement(1)
ListView.ActivateItem("Scoping Method");
ListView.ItemValue = "Named Selection" ;
ListView.ActivateItem("Named Selection");
ListView.ItemValue = "Pin_int_crc" ;

//Insert the fixed support on the excenter
DS.Script.doInsertEnvironmentFixedDisplacement(1)
ListView.ActivateItem("Scoping Method");
ListView.ItemValue = "Named Selection" ;
ListView.ActivateItem("Named Selection");
ListView.ItemValue = "Ex_int_crc" ;

DS.Script.doInsertEnvironmentFrictionlessDisplacement(1)
ListView.ActivateItem("Scoping Method");
ListView.ItemValue = "Named Selection" ;
ListView.ActivateItem("Named Selection");
ListView.ItemValue = "Ex_ext_crc" ;

Kapi · July 10, 2016, 23:02

those are automatic connection made my mesh
personally I dont like those connections untill I am 100% sure about them.
I prefer to make named selection of with side of connection and make interface.I use something like this:

Code:

/create array for partID and TopoId for each body
var partID = new Array ();
var TopoId = new Array ();

//Named section or interface #1

for (var i= 1; i<=count; i++) {
    partID[i] = ds.SelectionManager.SelectedPartID(i);
    TopoId[i] = ds.SelectionManager.SelectedEntityTopoID(i);
}

SM.Clear();//clear any existing selection
	
	for (var i= 1; i<=1; i++) {
    var part = ds.SelectionManager.PartMgr.PartById(partID[i]);
    var brep = part.BRep;
    var body = brep.Cell(TopoId[i]);
    var faces = body.faces;//get total faces of each body
    //loop the faces to get the face partID and topoID
    var faceCount = faces.Count;
	//SM.Clear(); //clear any existing selection	
    for (j= 7;j<=faceCount-2; j++) {
		face = faces(j);
		var aTopoId = face.Id;
		SM.ForceSelect(partID[i], aTopoId); //force select face based on part id and topo id
	} 
}

	name = "Interf_" + NS + " 2";
	ds.Script.addNamedSelection(false, name); //create named selection
	ds.Script.updateNamedSelectionsToolbar();
	SM.Clear(); //clear any existing selection

You can create NS similarly for face, edge or body.
Hope this is what you are after.

Cheers
KAPI

user12345678 · April 11, 2019, 09:17

Quote:

Originally Posted by arpeedesign

Hey Kapi!

Thanks for the help. I didn't know this syntax. It's good for change the name of the geometry item in the part list. But I'd like to set Named Selections, as I mentioned in this thread. (NamedSel_DM_.PNG and NamedSel_DM_tree.PNG) I use them to make the mesh size and I have no idea how to creat them in the Design Modeler by script.

I attached the pics what I want to do with the connections. All of the connections are named like this: Contact Region x. So I thought I'd use this name to change bonded to frictional; friction coefficient to 0,07 and the interface treatment Adjust to Touch. OR if I can make the NamedSlections for every part and edge, then I could use them for set the contact and the target, after I changed the scoping method.

Thank you for helping me!

Best regards!
Arpad

Code:

//Accesing Mesh Control Properties
var Mesh_Mod = DS.Tree.FirstActiveBranch.MeshControlGroup;
DS.Script.SelectItems(""+Mesh_Mod.ID);

//Insert the edge sizing for Epicycloid
DS.Script.doInsertMeshSize(1)
ListView.ActivateItem("Scoping Method");
ListView.ItemValue = "Named Selection" ;
ListView.ActivateItem("Named Selection");
ListView.ItemValue = "Epicycloid" ;
ListView.ActivateItem("Type");
ListView.ItemValue = "Element Size" ;
ListView.ActivateItem("Element Size");
ListView.ItemValue = "0.1"
ListView.SelectedItem.IsChecked="false"

//Insert the infaltion for Epicycloid
DS.Script.doInsertInflation(1)
ListView.ActivateItem("Scoping Method");
ListView.ItemValue = "Named Selection" ;
ListView.ActivateItem("Named Selection");
ListView.ItemValue = "Epi_srf" ;
ListView.ActivateItem("Boundary Scoping Method");
ListView.ItemValue = "Named Selections" ;
ListView.ActivateItem("Boundary");
ListView.ItemValue = "Epicycloid" ;
ListView.ActivateItem("Inflation Option");
ListView.ItemValue = "First Layer Thickness" ;
ListView.ActivateItem("First Layer Height");
ListView.ItemValue = "0,1"
ListView.SelectedItem.IsChecked="false"
ListView.ActivateItem("Maximum Layers");
ListView.ItemValue = "6"
ListView.SelectedItem.IsChecked="false"
ListView.ActivateItem("Growth Rate");
ListView.ItemValue = "1,15"
ListView.SelectedItem.IsChecked="false"

//Insert the edge sizing for circle of the gear
DS.Script.doInsertMeshSize(1)
ListView.ActivateItem("Scoping Method");
ListView.ItemValue = "Named Selection" ;
ListView.ActivateItem("Named Selection");
ListView.ItemValue = "Epi_crc" ;
ListView.ActivateItem("Type");
ListView.ItemValue = "Element Size" ;
ListView.ActivateItem("Element Size");
ListView.ItemValue = "1"
ListView.SelectedItem.IsChecked="false"

//Insert the face sizing for the gear
DS.Script.doInsertMeshSize(1)
ListView.ActivateItem("Scoping Method");
ListView.ItemValue = "Named Selection" ;
ListView.ActivateItem("Named Selection");
ListView.ItemValue = "Epi_srf" ;
ListView.ActivateItem("Type");
ListView.ItemValue = "Element Size" ;
ListView.ActivateItem("Element Size");
ListView.ItemValue = "1"
ListView.SelectedItem.IsChecked="false"

//Insert the mesh method
DS.Script.doInsertMeshElementShape(1)
ListView.ActivateItem("Scoping Method");
ListView.ItemValue = "Named Selection" ;
ListView.ActivateItem("Named Selection");
ListView.ItemValue = "Gear_Body" ;
ListView.ActivateItem("Method");
ListView.ItemValue = "Triangles" ;

//Insert the edge sizing for external circle of the excenter
DS.Script.doInsertMeshSize(1)
ListView.ActivateItem("Scoping Method");
ListView.ItemValue = "Named Selection" ;
ListView.ActivateItem("Named Selection");
ListView.ItemValue = "Ex_ext_crc" ;
ListView.ActivateItem("Type");
ListView.ItemValue = "Element Size" ;
ListView.ActivateItem("Element Size");
ListView.ItemValue = "1"
ListView.SelectedItem.IsChecked="false"

//Insert the face sizing for the excenter
DS.Script.doInsertMeshSize(1)
ListView.ActivateItem("Scoping Method");
ListView.ItemValue = "Named Selection" ;
ListView.ActivateItem("Named Selection");
ListView.ItemValue = "Ex_srf" ;
ListView.ActivateItem("Type");
ListView.ItemValue = "Element Size" ;
ListView.ActivateItem("Element Size");
ListView.ItemValue = "1"
ListView.SelectedItem.IsChecked="false"

//Insert the face sizing for the pin
DS.Script.doInsertMeshSize(1)
ListView.ActivateItem("Scoping Method");
ListView.ItemValue = "Named Selection" ;
ListView.ActivateItem("Named Selection");
ListView.ItemValue = "Pin_srf" ;
ListView.ActivateItem("Type");
ListView.ItemValue = "Element Size" ;
ListView.ActivateItem("Element Size");
ListView.ItemValue = "0,5"
ListView.SelectedItem.IsChecked="false"

//Insert the mappesface for the pin
DS.Script.doInsertMeshMappedMeshing(1)
ListView.ActivateItem("Scoping Method");
ListView.ItemValue = "Named Selection" ;
ListView.ActivateItem("Named Selection");
ListView.ItemValue = "Pin_srf" ;

//Generate Mesh
DS.Script.doModelPreviewMeshFromToolbar(1)

//Accesing the boundary conditions properties
var Env = DS.Tree.FirstActiveBranch.Environment;

DS.Script.SelectItems(""+Env.ID);

//Creating Moment at the gear circle
DS.Script.doInsertEnvironmentFreeMoment(1)
ListView.ActivateItem("Scoping Method");

ListView.ItemValue = "Named Selection" ;
ListView.ActivateItem("Named Selection");
ListView.ItemValue = "Epi_crc" ;
ListView.ActivateItem("Magnitude");
ListView.ItemValue = "248000" ;
ListView.SelectedItem.IsChecked="false"

//Insert the fixed support on pin
DS.Script.doInsertEnvironmentFixedDisplacement(1)
ListView.ActivateItem("Scoping Method");
ListView.ItemValue = "Named Selection" ;
ListView.ActivateItem("Named Selection");
ListView.ItemValue = "Pin_int_crc" ;

//Insert the fixed support on the excenter
DS.Script.doInsertEnvironmentFixedDisplacement(1)
ListView.ActivateItem("Scoping Method");
ListView.ItemValue = "Named Selection" ;
ListView.ActivateItem("Named Selection");
ListView.ItemValue = "Ex_int_crc" ;

DS.Script.doInsertEnvironmentFrictionlessDisplacement(1)
ListView.ActivateItem("Scoping Method");
ListView.ItemValue = "Named Selection" ;
ListView.ActivateItem("Named Selection");
ListView.ItemValue = "Ex_ext_crc" ;

hi Arpad,
Do you know how to change to the frictional connection by script now?
I met the same problem.

Could you please give me a hint?

Thanks!

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July 7, 2016, 05:38	Script Connection Friction	#1
arpeedesign New Member Join Date: Jul 2016 Posts: 3 Rep Power: 11	Hello all, I'm scripting an epicycloid gear in 2D. I am able to create the required mesh and I'd like to set a frictional connection between the pins and the gear by using script. What are the functions or the syntaxes for that? Should I make named selections for each pin? What is the easiest solution for it? Can anybody help me in these problems? Best regards! Arpad

July 7, 2016, 19:51		#2
Kapi Senior Member Join Date: Apr 2014 Location: Melbourne Posts: 584 Rep Power: 15	Hi Arpad, Are you using design modeler? You have to do named selection for each pin in order to call them for connections. named selection of bodies can be done like this: Code: var pin1 = ag.fm.Body(ag.fm.BodyCount-1); pin1.Name = "Apin1" show your code what you have done manually and what you want to achieve by script both in pics Cheers KAPI