Material#

class modularbuildingpy.core._material.Material(**kwargs)#

Bases: object

This class contains the material properties for steel column, beam, brace, and plate.

Caution

This class is not meant to be used directly. Please use the get_material() method of Model class to call methods and attributes.

Note

All units are in the SI system.
Please use kN, m, and kPa for force, length, and stress, respectively.

Attributes of Material class are:

steel_column#

Dictionary of the steel column material properties. Default values are:

Fy: 350e3
YoungModulus: 2e8
ShearModulus: 77e6
McMy: 1.05
Lambda_UQ: 0.0
ThetaP_UQ: 0.0
ThetaPc_UQ: 0.0
R0: 20
cR1: 0.925
cR2: 0.15
b: 0.10
a2: 1.0
a1: 1.0 * (350e3 / 2e8)
a4: 1.0
a3: 1.0 * (350e3 / 2e8)

Type:: dict

steel_beam#

Dictionary of the steel beam material properties. Default values are:

Fy: 345e3
YoungModulus: 2e8
ShearModulus: 77e6
McMy: 1.11
Lambda_UQ: 0.0
ThetaP_UQ: 0.0
ThetaPc_UQ: 0.0

Type:: dict

steel_brace#

Dictionary of the steel brace material properties. Default values are:

Fy: 350e3
YoungModulus: 2e8
ShearModulus: 77e6
R0: 20
cR1: 0.925
cR2: 0.15
b: 0.01
a2: 1.0
a1: 1.0 * (350e3 / 2e8)
a4: 1.0
a3: 1.0 * (350e3 / 2e8)
imperfection: 0.002
fatigue_E0: 0.01

Type:: dict

steel_plate#

Dictionary of the steel plate material properties. Default values are:

Fy: 200e3
YoungModulus: 2e8
ShearModulus: 77e6
McMy: 1.05

Type:: dict

steel_tendon#

Dictionary of the steel tendon material properties. Default values are:

Fy: 986e3
YoungModulus: 1.9e8

Type:: dict

Examples

Here is an example of how to modify the material properties of the steel column:

import modularbuildingpy as mbpy

model = mbpy.Model(name="test", directory="/home/test")

material = model.get_material()
material.steel_column["Fy"] = 400e3
material.steel_column["YoungModulus"] = 2.1e8

Warning

Make sure you modify these properties before you generate the model.