Modified on
30 Sep 2024 10:37 am
Skill-Lync
Welcome back to the Multibody Dynamics using SolidWorks blog series! In this blog, we will explore how to set up a multibody dynamics simulation using SolidWorks for a valve, cam, and rocker assembly. The key focus is on enabling motion study, adding motors, and ensuring proper material contacts for a realistic simulation. Let’s walk through the steps.
Step 1: Enabling Motion Study
Before starting the simulation, make sure SolidWorks Motion is enabled. To do this:
Step 2: Adding Motors for Cam Rotation
The first step in the simulation setup is to rotate the camshaft. For this, we’ll add a motor:
Step 3: Setting Up Contacts
Material contacts are essential for simulating how components interact in real life. Here’s how to define these contacts:
While steel might be the material used for simplicity, real-life materials vary depending on the application. However, using the same material here ensures uniform contact behavior during simulation.
Step 4: Adding a Valve Spring
To simulate the return of the valve, we need to add a spring. Here’s how:
The red color of the spring in the software indicates the pretension, showing the amount of compression.
Step 5: Running the Simulation
Step 6: Adjusting Output for Crank Angle Data
To get detailed data from the simulation, such as the valve’s linear displacement for each crank angle, adjust the frames per second (FPS) setting:
Step 7: Checking Material Properties
Make sure the material properties are set correctly:
Step 8: Plotting and Analyzing Results
To analyze how the valve moves during the simulation, plot the linear displacement of the valve:
Step 9: Modifying Spring Stiffness
If the spring’s stiffness is too low (for example, 1 Newton/mm), it can cause unstable motion. To fix this:
Step 10: Exporting Data to Excel
Once the simulation is completed and the plots are generated, you can export the data for further analysis:
Conclusion
By following these steps, you’ve successfully simulated and analyzed the dynamics of a valve, cam, and rocker assembly using SolidWorks. Whether you're learning Multibody Dynamics (MBD) using SolidWorks or exploring advanced simulations, this guide provides a comprehensive approach to setting up and refining your motion analysis.
This blog is part of our ongoing series on Multibody Dynamics.
If you missed the previous posts, check them out here.
Would you like to have a more interactive experience going through the SolidWorks user interface?
Skill-Lync has released a FREE comprehensive course covering Multibody Dynamics in detail! Check it out here.
If you’re looking to go deeper into SolidWorks training and multibody dynamics skills, check out Skill-Lync’s SolidWorks certification course.
Check out our hands-on course today and add Multibody Dynamics and SolidWorks to your list of skills!
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Author
Uma Maheswari K
Author
Skill-Lync
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