Sintering Process Simulation in Ansys Rocky
Introduction
Hello and welcome. In this session, we will explore the setup for a sintering model. We will apply the addition model using a linear formulation without rolling resistance. Two models must be defined for calculating the applied force and volume fraction.
Geometries and Motion Frames
The demonstration involves several components, some of which will have an associated motion frame. It's crucial to follow the sequence of all motions for the next steps.
- First Motion Frame: This is for the feeder, where particles are initially placed using a volumetric inlet. It involves two translations at the same speed, returning the component to its initial position. You can adjust the speed, as well as the initial and final times.
- Second Motion Frame: This controls the pressing action on the part and consists of a single translation.
- Fourth Motion Frame: An optional frame that may be added to push the part and repeat the process.
Material Properties
For this demo, we use placeholder values, but it's essential to use realistic values for better results. This also applies to material interactions, which include:
- Static and dynamic friction coefficients
- Restitution coefficient
- Stiffness fraction
These values can be generated using the material wizard or sourced from literature.
Volumetric Inlet
As previously mentioned, particle injection occurs inside the feeder. We use its walls to define a volumetric inlet with a specified total mass of particles.
Solver Setup
In the solver section, define the total simulation time and choose the execution option (either CPU or GPU) before running the model.
Animation and Post-Processing
During the animation, observe the particles inside the feeder, followed by the translation motions and compression. At the end, the part emerges at the surface.
Post-Processing Steps:
- Calculate Applied Force: Create a time plot from the press geometry to see the linear force applied over time. The slope corresponds to the coefficient in the motion frame, which may be optimized.
- Visualize Volume Fraction: Create a cylinder associated with the particles to visualize the volume fraction. Hide some components for better visualization. The cylinder must match the part's dimensions for accurate calculations. Define an Eulerian statistics object to set the mesh size and select the variable. From the top view, observe the definition differences between the left and right sides, which are absent between the top and bottom regions. Consider adjusting input parameters like feeder speed, particle size, and material properties.
- Analyze Particle Distribution: Plot the particle distribution on the part and analyze its composition by coloring particles based on size.
There are more post-processing activities to explore, but this concludes our session for today.
Contact Information
Thank you for watching. For more information, please contact us at Ozen Engineering, Inc.
Hello and welcome. Let's see the setup for this sintering model. In this case, we apply the addition model using the linear formulation and no rolling resistance. Two models must be defined for the calculation of the applied force and volume fraction.
Now, the geometries: there are several components for this demo, and some of them will have a motion frame associated, so keep in mind the sequence of all motions for our next step. The first motion frame is for the feeder, where the particles are placed in the beginning using the volumetric inlet.
It involves two translations at the same speed, returning the component to its initial position. You can also adjust the speed, as well as the initial and final times. The second motion frame controls the pressing action on the part and consists of a single translation.
A fourth motion frame may be added to push the part and repeat the process. Now, let's take a look at the material properties. These values are just for this demo, but it's essential to use realistic values to obtain better results.
The same applies to material interactions, which include the static and dynamic friction coefficients, the restitution coefficient, and the stiffness fraction. These values can be generated using the material wizard or taken from literature.
Next, the volumetric inlet: as mentioned before, the particle injection occurs inside the feeder, so we use its walls to define a volumetric inlet with a specified total mass of particles.
Finally, go to the solver section to define the total simulation time, the execution option (either CPU or GPU), and then run the model. Now, the animation: notice the particles inside the feeder, followed by both translation motions and the compression.
At the end, we see the part emerging at the surface. For post-processing, we can begin by calculating the applied force. Create a time plot from the press geometry. You can see the linear force applied over time, and the slope is the coefficient typed in the motion frame.
This may be a variable to optimize. Now, let's create the cylinder associated with the particles to visualize the volume fraction. First, I'm going to hide some components for better visualization. It is possible to define some transparency, but I prefer to hide the components.
The cylinder must match the dimensions of the part for the calculation, so choose a proper time to do it. Then, create an Eulerian statistics object to define the mesh size of the cylinder and then select the variable.
From the top view, you can see the difference in definition between the left and right sides. However, this difference is not present between the top and bottom regions. So, it's time to reconsider some input parameters, such as the feeder speed, particle size, and certain material properties.
Finally, we can plot the particle distribution on the part and analyze its composition. Go to particles and color them by particle size. There are more post-processing activities we can explore, but that's all for today. Thanks for watching.
Please contact us at https://ozeninc.com/contact for more information.
