Cad#

Geometric geometric_forms#

Geometric Forms#

This module contains functions to generate and manipulate basic geometric forms using PyVista. These forms can be used for visualization and analysis in various engineering and physics simulations. The functions in this module provide simple representations of common mechanical components such as control arms, tubes, cylinders, spheres, springs, and other structures.

Each function creates geometric shapes by connecting specified points in 3D space, allowing users to model complex systems efficiently. These forms can be used to build assemblies or test various configurations, making them useful for mechanical simulations, 3D modeling, and CAD systems.

The generated shapes are returned as pv.MultiBlock objects, which allow for efficient handling and visualization of multiple geometric forms in a single structure.

These functions provide an easy way to generate basic geometric components for more complex 3D models.

pymycar.Cad.geometric_forms.control_arm(uca_front, uca_rear, uca_outer_i, radius=10, resolution=100, n_sides=10)[source]#

Generate a control arm.

Parameters:

uca_frontarray-like: Coordinates of the front point of the control arm.
uca_reararray-like: Coordinates of the rear point of the control arm.
uca_outer_iarray-like: Coordinates of the outer point of the control arm.
radiusfloat, optional: Radius of the Tubes, by default 10.
resolutionint, optional: Resolution of the Tubes, by default 100.
n_sidesint, optional: Number of sides of the Tubes, by default 10.

Returns:

pv.MultiBlock: MultiBlock containing two Tubes representing the control arm.

Notes

The control arm is formed by two Tubes connecting the front and rear points to the outer point.

pymycar.Cad.geometric_forms.rocked(rocked_pivot, l_spring_mount, push_rod_inner_i)[source]#

Generate a structure with tubes connecting various points.

Parameters:

rocked_pivotarray-like: Coordinates of the rocked pivot point.
l_spring_mountarray-like: Coordinates of the lower mounting point of the spring.
push_rod_inner_iarray-like: Coordinates of the inner point of the push rod.

Returns:

pv.MultiBlock: MultiBlock containing three Tubes representing the structure.

Notes

The structure is formed by three Tubes connecting various points.

pymycar.Cad.geometric_forms.simple_cylinder(wheel_center_i, height, radius)[source]#

Generate a simple cylinder.

Parameters:

wheel_center_iarray-like: Coordinates of the center of the cylinder.
heightfloat: Height of the cylinder.
radiusfloat: Radius of the cylinder.

Returns:

pv.MultiBlock: MultiBlock containing a Cylinder representing the simple cylinder.

Notes

The simple cylinder is a Cylinder centered at the specified point with the given height and radius.

pymycar.Cad.geometric_forms.simple_sphere(wheel_center_i, radius)[source]#

Generate a simple sphere.

Parameters:

wheel_center_iarray-like: Coordinates of the center of the sphere.
radiusfloat: Radius of the sphere.

Returns:

pv.MultiBlock: MultiBlock containing a Sphere representing the simple sphere.

Notes

The simple sphere is a Sphere centered at the specified point with the given radius.

pymycar.Cad.geometric_forms.simple_tube(tierod_inner, tierod_outer_i, radius=5, resolution=100, n_sides=10)[source]#

Generate a simple tube.

Parameters:

tierod_innerarray-like: Coordinates of the inner point of the tube.
tierod_outer_iarray-like: Coordinates of the outer point of the tube.
radiusfloat, optional: Radius of the Tube, by default 10.
resolutionint, optional: Resolution of the Tube, by default 100.
n_sidesint, optional: Number of sides of the Tube, by default 10.

Returns:

pv.MultiBlock: MultiBlock containing a Tube representing the simple tube.

Notes

The simple tube is formed by a single Tube connecting the inner and outer points.

pymycar.Cad.geometric_forms.spring(u_spring_mount, l_spring_mount_i, radius=5)[source]#

Generate a spring.

Parameters:

u_spring_mountarray-like: Coordinates of the upper mounting point of the spring.
l_spring_mount_iarray-like: Coordinates of the lower mounting point of the spring.
radiusfloat, optional: Radius of the Spheres and the Tube, by default 10.

Returns:

pv.MultiBlock: MultiBlock containing two Spheres and a Tube representing the spring.

Notes

The spring is formed by two Spheres at the upper and lower mounting points and a Tube connecting them.

pymycar.Cad.geometric_forms.spring_old(u_spring_mount, l_spring_mount, radius=10, coil_radius=10, n_coils=1, n_points=1000)[source]#

Generate a spring.

Parameters:

u_spring_mountarray-like: Coordinates of the upper mounting point of the spring.
l_spring_mountarray-like: Coordinates of the lower mounting point of the spring.
radiusfloat, optional: Radius of the Spheres, by default 10.
coil_radiusfloat, optional: Radius of the spring coil, by default 5.
n_coilsint, optional: Number of coils in the spring, by default 10.
n_pointsint, optional: Number of points to represent the spring coil, by default 100.

Returns:

pv.MultiBlock: MultiBlock containing two Spheres and a Helix representing the spring.

Notes

The spring is formed by two Spheres at the upper and lower mounting points and a Helix representing the spring coil.

Chassis#

Formula#

pymycar.Cad.Chassis.formula.model_A(front_axle_to_com=1500, rear_axle_to_com=822.5, front_track=750.0, rear_track=822.5, com_height=400.0, roll=0, pitch=0, yaw=0, x=0, y=0, z=0) → MultiBlock[source]#

Generate a 3D model of a Formula vehicle chassis.

#                                                 ---
#---------------------------                      | |
#                            |                      | |
#                            ------------          | |
#                                        |          | |
#-----------   CoG               A      ----B-----|C|
#            |    *                *          *     |*|
#-----------                            ----------| |
#                                        |          | |
#                            ------------          | |
#                            |                      | |
#---------------------------                      | |
#                                                 ---

Parameters:

front_axle_to_comfloat, optional: Distance from the front axle to the center of mass (CoM).
rear_axle_to_comfloat, optional: Distance from the rear axle to the center of mass (CoM).
front_trackfloat, optional: Front track width.
rear_trackfloat, optional: Rear track width.
com_heightfloat, optional: Height of the center of mass (CoM).
rollfloat, optional: Roll angle in radians.
pitchfloat, optional: Pitch angle in radians.
yawfloat, optional: Yaw angle in radians.
xfloat, optional: X-coordinate of the center of mass (CoM).
yfloat, optional: Y-coordinate of the center of mass (CoM).
zfloat, optional: Z-coordinate of the center of mass (CoM).

Returns:

pv.MultiBlock: MultiBlock containing the chassis components.

Notes

The model consists of multiple boxes representing different parts of the vehicle chassis.

pymycar.Cad.Chassis.formula.model_B(front_axle_to_com=1500, rear_axle_to_com=822.5, front_track=750.0, rear_track=822.5, com_height=400.0, roll=0, pitch=0, yaw=0, x=0, y=0, z=0) → MultiBlock[source]#

Generate a 3D model of a different Formula vehicle chassis.

Parameters:

front_axle_to_comfloat, optional: Distance from the front axle to the center of mass (CoM).
rear_axle_to_comfloat, optional: Distance from the rear axle to the center of mass (CoM).
front_trackfloat, optional: Front track width.
rear_trackfloat, optional: Rear track width.
com_heightfloat, optional: Height of the center of mass (CoM).
rollfloat, optional: Roll angle in radians.
pitchfloat, optional: Pitch angle in radians.
yawfloat, optional: Yaw angle in radians.
xfloat, optional: X-coordinate of the center of mass (CoM).
yfloat, optional: Y-coordinate of the center of mass (CoM).
zfloat, optional: Z-coordinate of the center of mass (CoM).

Returns:

pv.MultiBlock: MultiBlock containing the chassis components.

Notes

The model consists of multiple boxes representing different parts of the vehicle chassis.

Tourist#

pymycar.Cad.Chassis.tourist.model_A(front_axle_to_com=822.5, rear_axle_to_com=822.5, front_track=822.5, rear_track=822.5, com_height=600.0, roll=0, pitch=0, yaw=0, x=0, y=0, z=0) → MultiBlock[source]#

Generate a 3D model of a vehicle chassis.

#                 <---------- d2 --------->      
#
#                   -------------------------      
#                   |                       |
#          h2       |          *p1          |  
#                   |                       | 
#     ---------------                       | 
# h1 |                 cog                  |
#    |                  * (x,y,z)           |
#    |                                      |
#    ---------------------------------------
#    <------------------ d1 ---------------> 
#

Parameters:

front_axle_to_comfloat, optional: Distance from the front axle to the center of mass (CoM).
rear_axle_to_comfloat, optional: Distance from the rear axle to the center of mass (CoM).
front_trackfloat, optional: Front track width.
rear_trackfloat, optional: Rear track width.
com_heightfloat, optional: Height of the center of mass (CoM).
rollfloat, optional: Roll angle in radians.
pitchfloat, optional: Pitch angle in radians.
yawfloat, optional: Yaw angle in radians.
xfloat, optional: X-coordinate of the center of mass (CoM).
yfloat, optional: Y-coordinate of the center of mass (CoM).
zfloat, optional: Z-coordinate of the center of mass (CoM).

Returns:

pv.MultiBlock: MultiBlock containing the chassis, cabin, and rear wheel.

Notes

The model consists of a chassis, a cabin, and a rear wheel, all represented as 3D geometric shapes.

Suspension#

Double Wishbone Visualization#

This module provides utilities for visualizing a double wishbone suspension system using PyVista. It includes functions to construct the CAD representation of the system components such as control arms, wheel, springs, and other suspension parts.

pymycar.Cad.Suspension.double_whisbone.whisbone_cad_base(data, index=None)[source]#

Generates the base components of the suspension system.

Parameters:

datadict: Dictionary containing suspension geometry data.
indexint: Index of the current data point.

Returns:

tuple: A tuple containing: - upper_control_arm : pyvista.PolyData - lower_control_arm : pyvista.PolyData - direction : pyvista.PolyData - wheel_center : pyvista.PolyData

pymycar.Cad.Suspension.double_whisbone.whisbone_cad_configuration_1(data, index=None)[source]#

Creates a suspension system configuration with a spring.

Parameters:

datadict: Dictionary containing suspension geometry data.
indexint: Index of the current data point.

Returns:

tuple: A tuple containing: - upper_control_arm : pyvista.PolyData - lower_control_arm : pyvista.PolyData - direction : pyvista.PolyData - wheel_center : pyvista.PolyData - spring_o : pyvista.PolyData

pymycar.Cad.Suspension.double_whisbone.whisbone_cad_configuration_2(data, index=None)[source]#

Creates a suspension system configuration with a rocker, push rod, and spring.

Parameters:

datadict: Dictionary containing suspension geometry data.
indexint: Index of the current data point.

Returns:

tuple: A tuple containing: - upper_control_arm : pyvista.PolyData - lower_control_arm : pyvista.PolyData - direction : pyvista.PolyData - wheel_center : pyvista.PolyData - spring_o : pyvista.PolyData - push_rod : pyvista.PolyData - rocked_o : pyvista.PolyData

Tourist#

pymycar.Cad.Chassis.tourist.model_A(front_axle_to_com=822.5, rear_axle_to_com=822.5, front_track=822.5, rear_track=822.5, com_height=600.0, roll=0, pitch=0, yaw=0, x=0, y=0, z=0) → MultiBlock[source]#

Generate a 3D model of a vehicle chassis.

#                 <---------- d2 --------->      
#
#                   -------------------------      
#                   |                       |
#          h2       |          *p1          |  
#                   |                       | 
#     ---------------                       | 
# h1 |                 cog                  |
#    |                  * (x,y,z)           |
#    |                                      |
#    ---------------------------------------
#    <------------------ d1 ---------------> 
#

Parameters:

front_axle_to_comfloat, optional: Distance from the front axle to the center of mass (CoM).
rear_axle_to_comfloat, optional: Distance from the rear axle to the center of mass (CoM).
front_trackfloat, optional: Front track width.
rear_trackfloat, optional: Rear track width.
com_heightfloat, optional: Height of the center of mass (CoM).
rollfloat, optional: Roll angle in radians.
pitchfloat, optional: Pitch angle in radians.
yawfloat, optional: Yaw angle in radians.
xfloat, optional: X-coordinate of the center of mass (CoM).
yfloat, optional: Y-coordinate of the center of mass (CoM).
zfloat, optional: Z-coordinate of the center of mass (CoM).

Returns:

pv.MultiBlock: MultiBlock containing the chassis, cabin, and rear wheel.

Notes

The model consists of a chassis, a cabin, and a rear wheel, all represented as 3D geometric shapes.