Technical data sheet PLA for FEA

[lucasliraAU]

Hello

I am working on a project and intend to perform FEA simulations on certain parts of the project.

I will use the 3D printing process to produce the parts that make up this project. Before that I would like to run the simulations.

I was searching the library and could not assimilate a material with the same physical properties of the PLA (If I'm wrong you can correct me).

So I took the liberty to create the material for my library and I am using the material information provided by Ultimaker to observe the images below:

When I was adding the properties I ended up getting a conflict and I do not know what are the main factors for the change. Some community expert could help me with this setup.

Thanks for any input into this challenge 🙂

[tyler_henderson]

Hi Lucas,

What is the specific conflict you are referring to?  Is it the difference in property values between the material in your library and the data provided by Ultimaker?  If that is the conflict, you can just edit the Material you created in your library and change the values.

[lucasliraAU]

Hello Tyler!

Thank you for your attention to this case.

In fact the data provided by the raw material manufacturer (PLA) is not enough to fill out the Fusion 360 information table.
I'd like to know what actions I need to take to validate my simulations.

[TheCADWhisperer]

Can you attach an example file here with your material applied?

Are you doing a linear elastic analysis or are you doing a non-linear analysis?

What is the purpose of the analysis (what do you want to know)?

Given the layered nature of 3D printing - I would be careful about the interpretation of the analysis.

[tyler_henderson · Accepted solution]

Hi Lucas,

You probably should send an inquiry to the manufacturer of the material to acquire the missing material data.  Also, if the product you are designing will be subjected to temperatures higher or lower than room temperature, you probably should conduct a Thermal-Stress analysis and use Temperature-dependent properties.  You would need to obtain the temperature curves from the material manufacturer and enter that data in the "Advanced Properties" tab of the material browser in Fusion.

[lucasliraAU]

Hello, @tyler_henderson!
Had not focused on this advanced features window!
Your guidance has helped me take further action on my work, thank you!

Greetings from Brazil!

[Anonymous]

How did you go with finding out more information? Did you find suitable values for your PLA material?

[alecGF6C9]

Hello, I have also been working on a library of 3D-printed materials (including PLA, ABS, PETG, etc.).

Several varieties of PLA with estimated physical properties from 3D-printing research papers and Polymaker strength estimates (sources listed in the library) are included. Currently, there are no temperature-dependent material properties filled in.

Anyone else interested may download the library from GitHub. Please feel free to suggest updates or additions using the issues section there.

https://github.com/alecGraves/Fusion360PrinterMaterials

[whguilford]

THIS!  Thank you, my friend!  

I get all the arguments that 3D printed plastic, at least by FDM, is wildly non-isotropic... but that's no reason for Autodesk not to include the material, at least. PLA can be injection molded, and it has some useful properties - biodegradability not being least among them.