Source code for RCAIDE.Library.Attributes.Materials.Bidirectional_Carbon_Fiber
# Bidirectional_Carbon_Fiber.py
#
# Created: Jul, 2017, J. Smart
# Modified: Apr, 2018, J. Smart
#-------------------------------------------------------------------------------
# Imports
#-------------------------------------------------------------------------------
from .Solid import Solid
from RCAIDE.Framework.Core import Units
#-------------------------------------------------------------------------------
# Bi-Directional Carbon Fiber Solid Class
#-------------------------------------------------------------------------------
[docs]
class Bidirectional_Carbon_Fiber(Solid):
"""
A class representing bidirectional carbon fiber composite material properties.
Attributes
----------
ultimate_tensile_strength : float
Maximum tensile stress before failure in Pa (600e6)
ultimate_shear_strength : float
Maximum shear stress before failure in Pa (90e6)
ultimate_bearing_strength : float
Maximum bearing stress before failure in Pa (600e6)
yield_tensile_strength : float
Stress at which material begins to deform plastically in Pa (600e6)
yield_shear_strength : float
Shear stress at which material begins to deform plastically in Pa (90e6)
yield_bearing_strength : float
Bearing stress at which material begins to deform plastically in Pa (600e6)
minimum_gage_thickness : float
Minimum manufacturable thickness in m (420e-6)
density : float
Material density in kg/m³ (1600)
Notes
-----
This class implements material properties for bidirectional woven carbon fiber composites.
Properties are based on median values from manufacturer reported data.
The equal ultimate and yield strengths reflect the generally linear elastic behavior
of carbon fiber composites up to failure.
**Definitions**
'Bidirectional Carbon Fiber'
A composite material with carbon fibers woven in two perpendicular directions,
providing similar properties in both directions
'Ultimate Strength'
The maximum stress that a material can withstand before failure
References
----------
[1] MatWeb. (n.d.). Overview of materials for Epoxy/Carbon Fiber Composite. Overview of materials for epoxy/carbon fiber composite. https://www.matweb.com/search/datasheet.aspx?matguid=39e40851fc164b6c9bda29d798bf3726
"""
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 = 600e6 * Units.Pa
self.ultimate_shear_strength = 90e6 * Units.Pa
self.ultimate_bearing_strength = 600e6 * Units.Pa
self.yield_tensile_strength = 600e6 * Units.Pa
self.yield_shear_strength = 90e6 * Units.Pa
self.yield_bearing_strength = 600e6 * Units.Pa
self.minimum_gage_thickness = 420e-6 * Units.m
self.density = 1600. * Units['kg/(m**3)']
