
Re: Min FOS: 1.$ problem with composites
Max P Mar 22, 2012 10:02 PM (in response to Max P)Okay, silly me, I was using an isotropic material definition, not an orthotropic. Changing that seems to have fixed the "1.$" prolem, but I am still getting incredibly high FOS values that are just hard to believe.
I'm guessing that the custom material definition I'm using has some bugs in it... So I'm changing my request for assistance:
Is there anyone on the forum here who is using IM7/8552 who would be willing to check and correct my material definition?
Elastic Modulus in X: 1.587e+011 N/m^2
Elastic Modulus in Y: 8780000000 N/m^2
Elastic Modulus in Z: 8780000000 N/m^2
Poisson's Ratio in XY: 0.322
Poisson's Ratio in YZ: 0.322
Poisson's Ratio in XZ: 0.322
Shear Modulus in XY: 4570000000 N/m^2
Shear Modulus in YZ: <Blank> N/m^2
Shear Modulus in XZ: <Blank> N/m^2
Mass Density 1530: kg/m^3
Tensile Strength in X: 2528000000 N/m^2
Tensile Strength in Y: 70100000 N/m^2
Compressive Strength in X: 1529000000 N/m^2
Compressive Strength in Y: 1529000000 N/m^2
Shear Strength in XY: 88400000 N/m^2
Yield Strength: 2528000000 N/m^2
Thermal Expansion Coefficient in X: 0.3 /K
Thermal Expansion Coefficient in Y: 0.3 /K
Thermal Expansion Coefficient in Z: 0.3 /K
Thermal Conductivity in X: 0.061 W/(m·K)
Thermal Conductivity in Y: 0.061 W/(m·K)
Thermal Conductivity in Z: 0.061 W/(m·K)
Specific Heat: 1850.57 J/(kg·K)
Material Damping Ratio: <Blank> N/A
No tables/curves defined.
Thanks.
MP.