Source code for RCAIDE.Library.Attributes.Materials.Epoxy
# Epoxy.py
#
# Created: Jul, 2017, J. Smart
# ModifiedL Apr, 2018, J. Smart
#-------------------------------------------------------------------------------
# Imports
#-------------------------------------------------------------------------------
from .Solid import Solid
from RCAIDE.Framework.Core import Units
#-------------------------------------------------------------------------------
# Hardened Epoxy Resin Solid Class
#-------------------------------------------------------------------------------
[docs]
class Epoxy(Solid):
"""
A class representing hardened epoxy resin material properties.
Attributes
----------
ultimate_tensile_strength : float
Maximum tensile stress before failure in Pa (0.0)
ultimate_shear_strength : float
Maximum shear stress before failure in Pa (0.0)
ultimate_bearing_strength : float
Maximum bearing stress before failure in Pa (0.0)
yield_tensile_strength : float
Stress at which material begins to deform plastically in Pa (0.0)
yield_shear_strength : float
Shear stress at which material begins to deform plastically in Pa (0.0)
yield_bearing_strength : float
Bearing stress at which material begins to deform plastically in Pa (0.0)
minimum_gage_thickness : float
Minimum manufacturable thickness in m (250e-6)
density : float
Material density in kg/m³ (1800)
Notes
-----
This class implements material properties for cured epoxy resin. The zero values
for strength properties indicate that these should be specified based on the
specific epoxy formulation being used, as properties can vary significantly
between different epoxy systems.
**Definitions**
'Epoxy Resin'
A thermosetting polymer that cures (hardens) when mixed with a catalyst
or hardener
'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.). Overview of materials for Epoxy, Cast, Unreinforced. Overview of materials for epoxy, cast, unreinforced. https://www.matweb.com/search/DataSheet.aspx?MatGUID=1c74545c91874b13a3e44f400cedfe39
"""
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 = 0.0 * Units.Pa
self.ultimate_shear_strength = 0.0 * Units.Pa
self.ultimate_bearing_strength = 0.0 * Units.Pa
self.yield_tensile_strength = 0.0 * Units.Pa
self.yield_shear_strength = 0.0 * Units.Pa
self.yield_bearing_strength = 0.0 * Units.Pa
self.minimum_gage_thickness = 250e-6 * Units.m
self.density = 1800. * Units['kg/(m**3)']
