Body

Class Body()

class Body(parent='MODEL', name='Body_n', label='Body_n', active=True, mass=0.0, 
ixx=0.0, ixy=0.0, iyz=0.0, ixz=0.0, iyy=0.0, izz=0.0, use_vx=False, use_vy=False, 
use_vz=False, use_wx=False, use_wy=False, use_wz=False, vx=0.0, vy=0.0, vz=0.0, wx=0.0, 
wy=0.0, wz=0.0, use_vm=False, use_wm=False, vm=None, wm=None, usecm=False, 
useim=False, uselprf=False, cg=None, im_origin=None, lprf_origin=None, use_flex=False, 
inertia_props_from_graphic=False)

Rigid body.

setValue, getValue, getAssociatedGraphics

Keyword Arguments

Argument	Data Type	Description	Default
name	String	The variable name.	Body_n, for next available integer n.
label	String	The descriptive label.	Body_n, for next available integer n.
parent	Object	The parent.	MODEL
active	Bool	Used to activate or deactivate this entity.	True
mass	Double	The mass.	0
ixx	Double	The ixx inertia property with respect to center of mass or body coordinate system.	0
iyy	Double	The iyy inertia property with respect to center of mass or body coordinate system.	0
izz	Double	The izz inertia property with respect to center of mass or body coordinate system.	0
ixy	Double	The ixy inertia property with respect to center of mass or body coordinate system.	0
iyz	Double	The iyz inertia property with respect to center of mass or body coordinate system.	0
ixz	Double	The ixz inertia property with respect to center of mass or body coordinate system.	0
use_vx	Bool	Use initial translation velocity in x direction when True.	False
use_vy	Bool	Use initial translation velocity in y direction when True.	False
use_vz	Bool	Use initial translation velocity in z direction when True.	False
use_wx	Bool	Use initial rotational velocity about x when True.	False
use_wy	Bool	Use initial rotational velocity about y when True.	False
use_wz	Bool	Use initial rotational velocity about z when True.	False
vx	Double	The initial translation velocity in x direction.	0
vy	Double	The initial translation velocity in y direction.	0
vz	Double	The initial translation velocity in z direction.	0
wx	Double	The initial rotational velocity about x.	0
wy	Double	The initial rotational velocity about y.	0
wz	Double	The initial rotational velocity about z.	0
usevm	Bool	Use reference marker (vm) for initial translational velocity when True.	False
usewm	Bool	Use reference marker (wm) for initial rotational velocity when True.	False
vm	Marker	The reference marker (vm) for initial translational velocity.	0
wm	Marker	The reference (vm) for initial rotational velocity.	0
usecm	Bool	Use center of mass coordinate system when True.	False
useim	Bool	Use inertia coordinate system when True.	False
uselprf	Bool	Use body coordinate system when True.	False
cg	Point	The origin for center of mass coordinate system.	None
im_origin	Point	The origin for inertia coordinate system.	None
lprf_origin	Point	The origin for body coordinate system.	None
useflex	Bool	Use as a flexible body if True.	False
inertia_props_from_graphic	Bool	Use properties from associated inertia graphic when True.	False

Instances

Instance	Type	Description
cm	Marker	Marker for center of mass coordinate system.
im	Marker	Marker for inertia coordinate system.
lprf	Marker	Marker for body coordinate system.
flex	FlexBody	Flexbody when useflex is True.

Readonly Properties

geomprops (InertiaProps) - Inertia properties of the body when get properties from associated graphics [inertia_props_from_graphic] is True. Defaults to -.

Notes

1. The parent parameter can only be initialized by the constructor and should not be modified directly.

2. Only parent can be used as a positional argument in the constructor.

3. Instance is a reference to an entity. You cannot modify an instance, but can modify its properties.

4. Readonly Properties cannot be modified.

Methods

getAssociatedGraphics()

Get all the graphics that are associated with this object.

Returns:

List of all graphic associated with this body.

Return type:

(list)

getValue(name)

Returns value of an attribute.

Parameters:

name (str) - Name of the attribute. Defaults to -.

Returns:

The return value. Return type depends on the attribute type.

setValue(name, value)

Sets value of an attribute.

Parameters:


name	str	Name of the attribute.
value	**	Value of the attribute to be set.

Returns:

Returns True if the value was successfully set else False.

Return type:

Bool

Body Pair

Class BodyPair()

BodyPair(parent='MODEL', name='Point_n', label='Point_n', active=True, sym='NONE')

Body pair containing left and right instances of singles.

Keyword Arguments

Argument	Data Type	Description	Default
name	String	The variable name.	BodyPair_n, for next available integer n.
label	String	The descriptive label.	BodyPair_n, for next available integer n.
parent	Object	The parent.	MODEL
active	Bool	Defines if entity is activated when True or deactivated when False.	True
sym	Enum	The symmetry of pair entity. Takes values 'LEFT' for left entity as master, 'RIGHT' for right entity as master or 'NONE' when it is not symmetric.	NONE

Instances

Instance	Type	Description
l	Point	The left body.
r	Point	The right body.

Notes

Instance is a reference to an entity. You cannot modify an instance, but can modify its properties.

Inertia Props

Class InertiaProps()

InertiaProps(**kwds)

Utility class to hold inertia properties of a body when body gets inertia properties from associated graphics.

Notes

You cannot create instances of the InertiaProps class. This class is used to modify the inertia properties of a body when it gets the properties from associated graphics.

Readonly Properties:

Argument	Data Type	Description	Default
mass	Double	The mass of associated graphics.	-
ixx	Double	The ixx inertia property with respect to center of mass coordinate system of associated graphics.	-
iyy	Double	The iyy inertia property with respect to center of mass coordinate system of associated graphics.	-
izz	Double	The izz inertia property with respect to center of mass coordinate system of associated graphics.	-
ixy	Double	The ixy inertia property with respect to center of mass coordinate system of associated graphics.	-
iyz	Double	The iyz inertia property with respect to center of mass coordinate system of associated graphics.	-
ixz	Double	The ixz inertia property with respect to center of mass coordinate system of associated graphics.	-
cg	Point	The origin for center of mass coordinate system.	-
cm	Marker	The marker for center of mass coordinate system.	-

Examples

========
Create and modify attributes of a Body.
>>> from hw import mview
>>> #Create a body and get values
>>> b1 = mview.Body(name='b1',label='Body1')
>>> b1.mass
0.0
>>> #Set multiple values at once
>>> b1.setValues(mass=10,ixx=100,iyy=5000)
>>> #Use graphic for intertia properties
>>> b1.intertia_props_from_graphic = True
>>> #Center of mass marker
>>> b1.usecm = True
>>> p1 = mview.Point(label='PointForCM')
>>> b1.cm.origin = p1
>>> #Aligning CM marker
>>> b1.cm.align_meth1 = 'DxDyDz'
>>> b1.cm.ornt_meth = 'ANGLES'
>>> b1.e1 = 20
>>> b1.cm.e1 = 20
>>> #Reference marker for CM
>>> m1 = mview.Marker(label='Reference')
>>> b1.cm.rm = m1
>>> #Make the body flexible get the H3D
>>> b1.useflex = True
>>> b1.rigidify = True
>>> b1.flex.MotionSolve.graphic_file = r"C:\Users\user\Desktop\flexfile.h3d"
>>> b1.flex.MotionSolve.h3d_file = b1.flex.MotionSolve.graphic_file
>>> #Set initial conditions for BodyPair
>>> b2 = mview.BodyPair(name='b_2',sym='NONE')
>>> b2.l.use_vx = True
>>> b2.l.vx = 25
>>> b2.r.use_wy = True
>>> #Set paramteric value
>>> b2.r.wy = "b_2.l.vx-12"