It seems like you’re describing a simulation scenario involving ANSYS Workbench Explicit Dynamics, where a dummy without a seatbelt impacts an airbag. ANSYS Explicit Dynamics is a finite element analysis software that is commonly used to simulate transient, dynamic events like impacts, explosions, and crashes.
To set up a simulation like the one you’ve described, follow these general steps:
- Geometry and Model Creation:
Begin by creating the geometries for the dummy, seatbelt, and airbag. You’ll need accurate CAD models or create them within ANSYS if available. Define material properties for each component, including the airbag fabric and dummy material properties. - Mesh Generation:
Generate a suitable mesh for each component of the model. The mesh should be refined in areas of interest, such as the contact interfaces between the dummy and airbag. - Boundary Conditions:
Apply the necessary boundary conditions. In this case, the dummy should be given an initial velocity or acceleration to simulate its impact. Constraints can be applied to restrict the movement of certain parts, such as the dummy’s body parts not connected to the seatbelt. - Contacts:
Define the contact interactions between the dummy and the airbag. You’ll need to specify the contact type (e.g., surface-to-surface) and adjust parameters like friction, stiffness, and damping to accurately represent the interaction. - Airbag Inflation:
If you want to simulate the airbag inflation process, you’ll need to apply appropriate pressure loads to the airbag. This might involve defining an initial pressure distribution that gradually increases as the airbag inflates. - Solver Settings:
Configure the explicit dynamics solver settings, including the time step size, total simulation time, and convergence criteria. - Run the Simulation:
Run the simulation and monitor its progress. ANSYS Explicit Dynamics will simulate the dynamic behavior of the system over time, accounting for interactions, deformations, and other physical phenomena. - Results Analysis:
Once the simulation is complete, analyze the results. You can visualize the dummy’s interaction with the airbag, study forces, accelerations, and displacements, and assess the effectiveness of the airbag deployment.
Remember that setting up such simulations requires a good understanding of both ANSYS Explicit Dynamics and the physics involved in the scenario. Additionally, specific steps and settings might vary depending on the version of ANSYS and the details of your simulation. It’s also important to ensure that the simulation setup is validated against real-world data to ensure accuracy.