(StataSys) VeroWhite material simulation

[Anonymous]

Hi all,

We are using Fusion 360 to model a part which is subject to a load. Our part will be machined by a 3D printer (by StrataSys) and made of VeroWhite resin. We want to make sure this prototype part is strong enough for our application so we have put together a simulation. We did not find the VeroWhite material in the material choices. We do have the technical specs for the material (check this link) but it seems some values needed by the simulation are not found in the specs (e.g. the yield strength, the tensile strength, the Poisson coefficient...).

VeroWhite is a very common material in prototyping, hence the question: how do you guys simulate when having the VeroWhite as the target material? Do you use a material already in Fusion 360 and with close specs? Did you find the missing values elsewhere?

Thanks a lot,

Antoine.

[Anonymous · Accepted solution]

We actually ended up with a custom material modified from plastic PA 66 (also named Nylon 6/6 in Fusion) which has close specs (check here why, in French I am afraid). We have refined the specs using the values found here and making the assumption that the material is fragile / brittle (it seems to be the case when knocking on a material sample), so

Yield Strength = Tensile Strength. The bold lines are the ones required for static simulation (which is the only simulation we were interested in), that is:

/////////////////////////////////////////////////////////

PA 66 (Nylon) : source material

Thermal Conductivity

2.4 e-1 W / (m K) 

Specific Heat 

1.34 J / (g C) 

Thermal Expansion Coefficient 

55.8 µm / (m C) 

Behavior

isotropic 

Young's Modulus

2930 GPa

Poisson's ratio

0,35

Shear Modulus 

1000 MPa 

Density 

1.13 g/cm^3

Yield Strengt

82.75 MPa

Tensile Strength

82.68 MPa

/////////////////////////////////////////////////////////

VeroWhite : modified from PA 66

Thermal Conductivity

2.4 e-1 W / (m K) 

Specific Heat 

1.34 J / (g C) 

Thermal Expansion Coefficient 

55.8 µm / (m C) 

Behavior

isotropic 

Young's Modulus

2495 MPa 

Poisson's ratio

0.38 

Shear Modulus 

1000 MPa 

Density

1.174 g/cm^3 

Yield Strength

58 MPa 

Tensile Strength

58 MPa