ross.Material

class ross.Material(name, rho, E=None, G_s=None, Poisson=None, color='#525252', **kwargs)

Material used on shaft and disks.

Class used to create a material and define its properties. Density and at least 2 arguments from E, G_s and Poisson should be provided.

You can run rs.Material.available_materials() to get a list of materials already provided.

Parameters:

namestr

Material name.

rhofloat, pint.Quantity

Density (kg/m**3).

Efloat, pint.Quantity, optional

Young’s modulus (N/m**2).

G_sfloat, pint.Quantity, optional

Shear modulus (N/m**2).

Poissonfloat, optional

Poisson ratio (dimensionless).

colorstr, optional

Color that will be used on plots.

Examples

>>> from ross.units import Q_
>>> AISI4140 = Material(name="AISI4140", rho=7850, E=203.2e9, G_s=80e9)
>>> Steel = Material(name="Steel", rho=Q_(7.81, 'g/cm**3'), E=211e9, G_s=81.2e9)
>>> AISI4140.Poisson
0.27
>>> Steel.rho
7809.999999999999

Methods

__init__(name, rho, E=None, G_s=None, Poisson=None, color='#525252', **kwargs)

static available_materials()

Return a list of all saved material’s name.

Returns:

available_materialslist

A list containing all saved material’s names.

Examples

>>> import ross as rs
>>> steel = rs.Material.load_material('Steel')
>>> steel.name = 'test_material'
>>> steel.save_material()
>>> steel.remove_material('test_material')

static dump_data(data)

Save material properties.

This is an auxiliary function to save the materials properties in the save method.

Parameters:

datadict

Dictionary containing all data needed to instantiate the Object.

static get_data()

Load material properties.

This is an auxiliary function to load all saved materials properties in the load_material method.

Returns:

datadict

Containing all data needed to instantiate a Material Object.

static load_material(name)

Load a material that is available in the data file.

Returns:

ross.Material

An object with the material properties.

Raises:

KeyError

Error raised if argument name does not match any material name in the file.

Examples

>>> import ross as rs
>>> steel = rs.Material.load_material('Steel')

static remove_material(name)

Delete a saved ross.Material.

Parameters:

namestring

Name of Material Object to be deleted.

Examples

>>> import ross as rs
>>> steel = rs.Material.load_material('Steel')
>>> steel.name = 'test_material'
>>> steel.save_material()
>>> steel.remove_material('test_material')

save_material()

Save the material in the available_materials list.