This tutorial is about finite element analysis of a 3D printed part in abaqus. The object is shown in the following figure.

The object is 3D and has cavity inside. The air is blown inside the object and the object expand in a unique way as shown in the following video.

The complete tutorial is also available just for Rs. 100 at: http://imojo.in/80mykz

CAD model/Part

The CAD model of the 3D printed object is available in STEP format.

Here its the link for the file in STEP format : http://imojo.in/eqcy6g

Material Model

3D printed material call NINJAFLEX with yeoh coefficients C10=1.653 C20=0.0324 C30=0.000486 and a density of 1.2 g/cm3 (1.2e-6kg/mm3) has been used.

Finite element simulation procedure

The simulation has been done in following steps

1. Import CAD model part and mesh, watch part 1

This is the first part of the tutorial.

In this video I have explained the procedure to import the CAD model of the object in abaqus environment for simulation purpose.

2. Material and section properties & create assembly, watch part 2

In this video I have explained the procedure to create material properties and assign material to the part.

3. Step, amplitude definition watch part 3

In this video I have explained following things,

create a step with time 1 s create an amplitude create a reference point and and make set. create an internal cavity surface

4. Interaction, fluid cavity definition, watch part 4

In this video I have described the procedure to create various intercations and fluid cavity definition.

I have used following air properties to create fluid cavity,

Air properties at 300K

Molecular weight = 0.028 kg/mol

Molar heat capacity = 29 J/mol-K

Universal gas constant = 8.31 J/mol-K

5. Job

Watch part 5 below.

Simulation files

Click here to get the simulation files

or

Click here to download the simulation files.

Acknowledgement

Thanks to Dieago Martinez to provide material properties and CAD model of the object.