brim.bicycle.cranks.MasslessCranks

class brim.bicycle.cranks.MasslessCranks(name: str)

Bases: CranksBase

Simplified cranks model.

Attributes

auxiliary_handler	Auxiliary data handler of the model.
center_point	Center point of the cranks.
connections	Submodels out of which this model exists.
convention
descriptions	Descriptions of the objects.
frame	Frame of the cranks.
left_pedal_point	Left pedal of the bicycle.
load_groups	Load groups of the connection.
name	Name of the object.
required_connections
required_models
right_pedal_point	Right pedal of the bicycle.
rotation_axis	Rotation axis of the cranks.
submodels	Submodels out of which this model exists.
system	System object used to store the information of the model itself.

Methods

__init__	Create a new instance of the model.
add_load_groups	Add load groups to the connection.
define_all	Define all aspects of the model.
define_connections	Define the submodels used by connections in the model.
define_constraints	Define the constraints on the model.
define_kinematics	Establish the kinematics of the objects belonging to the model.
define_loads	Define the loads that are acting upon the model.
define_objects	Initialize the objects belonging to the model.
from_convention	Create a model from a convention.
get_all_symbols	Get all declared symbols of a model.
get_description	Get description of a given object.
get_param_values	Get a parameters mapping of a model based on a bicycle parameters object.
set_plot_objects	Set the symmeplot plot objects.
to_system	Export the model to a single system instance.

__init__(name: str) → None

Create a new instance of the model.

Parameters:

name (str) – Name of the model.

__repr__() → str

Return repr(self).

__str__() → str

Return str(self).

__weakref__

list of weak references to the object (if defined)

add_load_groups(*load_groups: LoadGroupBase) → None

Add load groups to the connection.

property auxiliary_handler: AuxiliaryDataHandler | None

Auxiliary data handler of the model.

property center_point: Point

Center point of the cranks.

property connections: tuple[brim.core.base_classes.ConnectionBase]

Submodels out of which this model exists.

define_all() → None

Define all aspects of the model.

define_connections() → None

Define the submodels used by connections in the model.

define_constraints() → None

Define the constraints on the model.

define_kinematics() → None

Establish the kinematics of the objects belonging to the model.

define_loads() → None

Define the loads that are acting upon the model.

define_objects() → None

Initialize the objects belonging to the model.

property descriptions: dict[Any, str]

Descriptions of the objects.

property frame: ReferenceFrame

Frame of the cranks.

classmethod from_convention(convention: str, name: str, *args, **kwargs) → ModelBase

Create a model from a convention.

get_all_symbols() → set[sympy.core.basic.Basic]

Get all declared symbols of a model.

get_description(obj: Any) → str

Get description of a given object.

get_param_values(bicycle_parameters: Bicycle) → dict[sympy.core.symbol.Symbol, float]

Get a parameters mapping of a model based on a bicycle parameters object.

property left_pedal_point: Point

Left pedal of the bicycle.

property load_groups: tuple[brim.core.base_classes.LoadGroupBase]

Load groups of the connection.

property name: str

Name of the object.

property right_pedal_point: Point

Right pedal of the bicycle.

property rotation_axis: Vector

Rotation axis of the cranks.

set_plot_objects(plot_object: PlotModel) → None

Set the symmeplot plot objects.

property submodels: tuple[brim.core.base_classes.ModelBase]

Submodels out of which this model exists.

property system: System | None

System object used to store the information of the model itself.

Notes

This system object is used to store the information of the model itself. It does not by definition contain any information about the submodels or connections. Therefore, one cannot use this system object to form the equations of motion. Instead, one should use the to_system() method to get the system object representing the entire model.

to_system() → System

Export the model to a single system instance.