Source code for RCAIDE.Library.Attributes.Materials.Steel
# Steel.py
#
# Created: Jul, 2017, J. Smart
# Modified: Apr, 2018, J. Smart
#-------------------------------------------------------------------------------
# Imports
#-------------------------------------------------------------------------------
from .Solid import Solid
from RCAIDE.Framework.Core import Units
#-------------------------------------------------------------------------------
# AISI 4340 Steel Solid Class
#-------------------------------------------------------------------------------
[docs]
class Steel(Solid):
"""
A class representing AISI 4340 steel material properties.
Attributes
----------
ultimate_tensile_strength : float
Maximum tensile stress before failure in Pa (1110e6)
ultimate_shear_strength : float
Maximum shear stress before failure in Pa (825e6)
ultimate_bearing_strength : float
Maximum bearing stress before failure in Pa (1110e6)
yield_tensile_strength : float
Stress at which material begins to deform plastically in Pa (710e6)
yield_shear_strength : float
Shear stress at which material begins to deform plastically in Pa (410e6)
yield_bearing_strength : float
Bearing stress at which material begins to deform plastically in Pa (710e6)
minimum_gage_thickness : float
Minimum manufacturable thickness in m (0.0)
density : float
Material density in kg/m³ (7850)
Notes
-----
This class implements material properties for AISI 4340 steel, a high-strength
alloy steel commonly used in aerospace applications. The properties are based on
median values.
**Definitions**
'Ultimate Strength'
The maximum stress that a material can withstand before failure
'Yield Strength'
The stress at which a material begins to deform plastically
References
----------
[1] MatWeb. (n.d.). Crucible Steel AISI 4340 Alloy Steel. Crucible Steel aisi 4340 alloy steel. https://www.matweb.com/search/DataSheet.aspx?MatGUID=32036e9a93d04975bec68fc8ca3a696d
"""
def __defaults__(self):
"""Sets material properties at instantiation.
Assumptions:
None
Source:
N/A
Inputs:
N/A
Outputs:
N/A
Properties Used:
None
"""
self.ultimate_tensile_strength = 1110e6 * Units.Pa
self.ultimate_shear_strength = 825e6 * Units.Pa
self.ultimate_bearing_strength = 1110e6 * Units.Pa
self.yield_tensile_strength = 710e6 * Units.Pa
self.yield_shear_strength = 410e6 * Units.Pa
self.yield_bearing_strength = 710e6 * Units.Pa
self.minimum_gage_thickness = 0.0 * Units.m
self.density = 7850. * Units['kg/(m**3)']
