Double Whisbone

#
#                    \\\
#                    \-/
#             UCA_REAR*
#                    /
#                   /
#   -----------    /
#    |       |    /
#    |       |   *----------*UCA_FRONT
#    |       |             /⁻\
#    |       |             ///
#    |       |
#    |       |
#    |       |        tierod_outer
#    |       |       *--------------------*TIEROD_INNER
#    |       |
#    |       |
#    |       |       lca_outer
#    |       |      *------------*LCA_REAR
#   -----------     \           /⁻\
#                    \          ///
#                     \
#                      *LCA_FRONT
#                     /⁻\
#                     ///

Name	Description
UCA_FRONT	upper control arm front
UCA_REAR	upper control arm rear
LCA_FRONT	upper control arm front
LCA_REAR	LOWER control arm rear
TIEROD_INNER	tierod inner
uca_outer	upper control arm outer
lca_outer	lower upper control arm outer
tierod_outer	tierod outer

import matplotlib.pyplot as plt
import numpy as np
import pandas as pd
import pyvista as pv

from pymycar.SuspensionKinematic.double_whisbone  import double_whisbone_configuration_1

from pymycar.Cad.Suspension.double_whisbone import whisbone_cad_configuration_1
from pymycar.Cad.Wheel.wheel import wheel_cad

# Points
data = {
    "UCA_FRONT": np.array([586.7, -314.5, 199.9]),
    "UCA_REAR": np.array([930.7, -230.2, 244.2]),
    "LCA_FRONT": np.array([588.7, -384.2, 76.8]),
    "LCA_REAR": np.array([938.2, -191.2, 62.7]),
    "TIEROD_INNER": np.array([934.2, -192.1, 81.2]),
    "uca_outer": np.array([953.0, -474.2, 272.2]),
    "lca_outer": np.array([934.8, -514.7, 47.9]),
    "tierod_outer": np.array([1027.1, -513.7, 43.6]),
    "wheel_center": np.array([941.5, -580.2, 155.1]),
    "U_SPRING_MOUNT": np.array([831.7, -278.7, 251.2]),
    "l_spring_mount": np.array([849.2, -419.1, 76.4])
}

Call the Solver

solution, wheel_variables = double_whisbone_configuration_1(data,
                                           max_height_increase=50,
                                           max_height_decrease=20,
                                           height_step=1,
                                           save_to_txt=True,
                                           result_folder_name="double_whisbone_configuration_1",
                                           path=None)

All specified files deleted successfully.
All specified folders and their contents deleted successfully.
All specified folders and their contents deleted successfully.

Plot: “wheel_track vs “wheel_jounce”

fig, ax = plt.subplots()
ax.plot(wheel_variables["wheel_jounce"], wheel_variables["wheel_track"], 'k-', linewidth=2.0)
ax.grid(color='k', linestyle='-', linewidth=0.3)
ax.set_xlabel('wheel track')
ax.set_ylabel('caster angle')
ax.set_title('Wheel Jounce - Wheel Track')

Text(0.5, 1.0, 'Wheel Jounce - Wheel Track')

Plot: “wheel_base” vs “wheel_jounce”

fig, ax = plt.subplots()
ax.plot(wheel_variables["wheel_jounce"], wheel_variables["wheel_base"], 'k-', linewidth=2.0)
ax.grid(color='k', linestyle='-', linewidth=0.3)
ax.set_xlabel('wheel jounce')
ax.set_ylabel('wheel base')
ax.set_title('Wheel Jounce - Wheel Base')

Text(0.5, 1.0, 'Wheel Jounce - Wheel Base')

Plot: “camber_angle” vs “wheel_jounce”

fig, ax = plt.subplots()
ax.plot(wheel_variables["wheel_jounce"], wheel_variables["camber_angle"],'r-', linewidth=2.0)
ax.grid(color='k', linestyle='-', linewidth=0.3)
ax.set_xlabel('wheel jounce')
ax.set_ylabel('camber angle')
ax.set_title('Wheel Jounce - Camber Angle')

Text(0.5, 1.0, 'Wheel Jounce - Camber Angle')

Plot: “camber_angle” vs “wheel_jounce”

fig, ax = plt.subplots()
ax.plot(wheel_variables["wheel_jounce"], wheel_variables["side_view_angle"],'r-', linewidth=2.0)
ax.grid(color='k', linestyle='-', linewidth=0.3)
ax.set_xlabel('wheel jounce')
ax.set_ylabel('side view angle')
ax.set_title('Wheel Jounce - Side View Angle')

Text(0.5, 1.0, 'Wheel Jounce - Side View Angle')

Plot: “camber_angle” vs “wheel_jounce”

fig, ax = plt.subplots()
ax.plot(wheel_variables["wheel_jounce"], wheel_variables["toe_angle"],'r-', linewidth=2.0)
ax.grid(color='k', linestyle='-', linewidth=0.3)
ax.set_xlabel('wheel jounce')
ax.set_ylabel('toe angle')
ax.set_title('Wheel Jounce - Toe Angle')

Text(0.5, 1.0, 'Wheel Jounce - Toe Angle')

Plot: “caster_angle” vs “wheel_jounce”

fig, ax = plt.subplots()
ax.plot(wheel_variables["wheel_jounce"], wheel_variables["caster_angle"], 'g-', linewidth=2.0)
ax.grid(color='k', linestyle='-', linewidth=0.3)
ax.set_xlabel('wheel jounce')
ax.set_ylabel('caster angle')
ax.set_title('Wheel Jounce - Caster Angle')

Text(0.5, 1.0, 'Wheel Jounce - Caster Angle')

Plot: kingpin_angle vs “wheel_jounce”

fig, ax = plt.subplots()
ax.plot( wheel_variables["wheel_jounce"], wheel_variables["kingpin_angle"], 'g-', linewidth=2.0)
ax.grid(color='k', linestyle='-', linewidth=0.3)
ax.set_xlabel('wheel jounce')
ax.set_ylabel('kingpin angle')
ax.set_title('Wheel Jounce - Kingpin Angle')


plt.show()



last_meshes = []
def plot_frame(plotter, data, index=None):
    global last_meshes

    if index is None:
        index = data["index_reference"]

    upper_control_arm, lower_control_arm, direction, wheel_center1, spring_o = whisbone_cad_configuration_1(data,index)
    wheel = wheel_cad(data, wheel_variables, index)

    # Remove the last meshes
    for mesh in last_meshes:
        plotter.remove_actor(mesh)

    # Add new meshes
    last_meshes = [

        plotter.add_mesh(wheel_center1, color="black"),
        plotter.add_mesh(upper_control_arm, color="blue"),
        plotter.add_mesh(lower_control_arm, color="pink"),
        plotter.add_mesh(direction, color="green"),
        plotter.add_mesh(wheel, color="black", opacity=0.5),
        plotter.add_mesh(spring_o, color="red")
    ]


plotter = pv.Plotter()
def create_mesh(value):
    res = np.abs(solution["wheel_center"][:,2] - value).argmin()
    plot_frame(plotter, solution, index=res)

plotter.add_slider_widget(create_mesh,
                          rng=[solution["wheel_center"][0, 2], solution["wheel_center"][-1, 2]],
                          value=solution["wheel_center"][solution["index_reference"]][2],
                          title='Jounce')
plotter.show()