How can I simulate a pneumatic soft robot?

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Sonia
Sonia le 6 Juil 2023
Hi everyone!
Is it possible to simulate a pneumatic bellow made of soft materials with MATLAB? And if yes, how to do that?
If I design the bellow with CAD and import it in Simulink can I simulate it? (the shape could be also easier than a bellow)
Or it will be better to realize the simulation in some FEM software and send data to Matlab (not sure if it's possible to do in an easy way)?
Thank you very much!

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Chaitanya
Chaitanya le 11 Juil 2023
Hi @Sonia,
Yes, it is possible to simulate a pneumatic bellow made of soft materials using MATLAB. There are multiple approaches you can take to simulate such a system. Here are two possible methods:
1. Simulating the bellow directly in Simulink: You can model the pneumatic bellow using Simulink's physical modeling capabilities. Simulink provides various blocks that allow you to represent mechanical systems, fluid dynamics, and control systems. You can use these blocks to model the behavior of the bellow, including its deformation, pressure, and response to external forces. By defining the appropriate equations and parameters, you can simulate and analyze the behavior of the bellow within Simulink.
2. Coupling MATLAB with FEM software: If you have access to a Finite Element Method (FEM) software, you can use it to simulate the deformation and behavior of the bellow. FEM software, such as COMSOL Multiphysics or ANSYS, specializes in simulating complex mechanical systems and can accurately model the deformation of soft materials. You can design the bellow in a CAD software, import it into the FEM software, and simulate its behavior under different conditions. Once you have the simulation results, you can export the data from the FEM software and import it into MATLAB for further analysis or integration with other systems.
The choice between simulating the bellow directly in Simulink or using an FEM software depends on your specific requirements and the complexity of the system. If you are primarily interested in the pneumatic behavior and control aspects of the bellow, Simulink may be a suitable choice. However, if you want to accurately model the deformation and material properties of the bellow, an FEM software might provide more accurate results.
Ultimately, both approaches can be viable, and the choice depends on the level of detail and accuracy you require for your simulation.
Hope this helps!

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