Node

class itasca.interface.node.Node

Objects of this type should not be created (instantiated) directly in Python. Use the module functions that return instances of this type.

area() → float.

(3D only) Get the effective area of the interface node.

disp(i: int) → vec or float.

Get the displacement vector for the interface node. Returns a vector, unless an optional component argument i is supplied, in which case it returns the component value.

disp_shear() → vec or float.

Get the shear displacement vector for the interface node. Returns a vector, unless an optional component argument i is supplied, in which case it returns the component value.

disp_shear_set(v: vec) → None.

Set the shear displacement vector for the interface node.

disp_shear_x() → float.

Get the x-component of the shear displacement vector for the interface node.

disp_shear_x_set(f: float) → None.

Set the shear displacement vector x-component for the interface node.

disp_shear_y() → float.

Get the y-component of the shear displacement vector for the interface node.

disp_shear_y_set(f: float) → None.

Set the shear displacement vector y-component for the interface node.

disp_shear_z() → float.

Get the z-component of the shear displacement vector for the interface node.

disp_shear_z_set(f: float) → None.

Set the shear displacement vector z-component for the interface node.

extra(slot: int) → any.

Get the node extra data in the given slot.

group([slot: str or int]) → str.

Get the node group name in a given slot.

group_remove(group_name: str or int[, slot: str or int]) → bool.

Remove from the given group from all group slots of the node. One argument of type string, giving the group name, is required. The return value is a bool which is True if the group was removed from any slot, otherwise False.

groups() → {slot: group_name}.

Get a dictionary describing which groups this node is part of. The keys of the dictionary are the slot names and the values are the group names.

id() → int.

Get the node id.

in_group(group_name: str or int[, slot: str or int]) → bool.

Test if the node is part of a given group. If the optional argument slot is given, only that slot is searched. Otherwise, all group slots are searched.

normal() → vec.

Get the normal vector for the interface node, which is an area (in 3D) or length (in 2D) weighted average of the interface elements it is connected to. Returns a vector.

normal_x() → float.

Get the x-component for the interface normal.

normal_y() → float.

Get the y-component for the interface normal.

normal_z() → float.

Get the z-component for the interface normal.

penetration(i: int) → float.

Get interface node penetration with the contacting zone face (only valid after cycling). A value <= 0 is returned if there is no contact.

pos() → vec.

Get the position vector for the interface node.

pos_set(v: vec) → None.

Set the position vector for the interface node.

pos_x() → float.

Get the the x-component of the position vector for the interface node.

pos_x_set(f: float) → None.

Set the x-component of the position vector for the interface node.

pos_y() → float.

Get the the y-component of the position vector for the interface node.

pos_y_set(f: float) → None.

Set the y-component of the position vector for the interface node.

pos_z() → float.

Get the the z-component of the position vector for the interface node.

pos_z_set(f: float) → None.

Set the z-component of the position vector for the interface node.

pp() → float.

Get the pore pressure of the node (only valid after cycling).

prop(string name) → value v.

Get property name of this interface node.

prop_set(string name, value v) → None.

Set property name of this interface node to value v.

set_extra(slot: int, value: any) → None.

Set the node extra data in the given slot.

set_group(group_name: str or int[, slot: str or int]) → None.

Set the node group name in a given slot.

slip() → int.

Get the slip status (0-2) of the interface node: 0 is for shear-now; 1 is for shear-past; and 2 is for no shear failure now or in the past.

slip_set(i: int) → None.

Set the slip status (0-2) of the interface node: 0 is for shear-now; 1 is for shear-past; and 2 is for no shear failure now or in the past.

stress_normal() → float.

Get normal stress at the node.

stress_shear() → vec.

Get the shear stress vector for the interface node.

stress_shear_set(v: vec) → None.

Get the shear stress vector for the interface node.

stress_shear_x() → float.

Get the x-component of the shear stress vector for the interface node.

stress_shear_x_set(f: float) → None.

Set the x-component of the shear stress vector for the interface node.

stress_shear_y() → float.

Get the y-component of the shear stress vector for the interface node.

stress_shear_y_set(f: float) → None.

Set the y-component of the shear stress vector for the interface node.

stress_shear_z() → float.

Get the z-component of the shear stress vector for the interface node.

stress_shear_z_set(f: float) → None.

Set the z-component of the shear stress vector for the interface node.

tol() → float.

Get the interface node contact tolerance, a dimensionless measure of how close a face has to be to register a contact.

tol_set(f: float) → None.

Set the interface node contact tolerance, a dimensionless measure of how close a face has to be to register a contact.

valid() → bool.

Returns True if this node is live.

vel() → vec.

Get the velocity vector for the interface node.

vel_set(vec) → None.

Set the velocity vector for the interface node.

vel_x() → float.

Get x-component of the velocity vector for the interface node.

vel_x_set(float) → None.

Set x-component of the velocity vector for the interface node.

vel_y() → float.

Get y-component of the velocity vector for the interface node.

vel_y_set(float) → None.

Set y-component of the velocity vector for the interface node.

vel_z() → float.

Get z-component of the velocity vector for the interface node.

vel_z_set(float) → None.

Set z-component of the velocity vector for the interface node.