19 Nov Best Practices for Flexible Multibody Simulation with Simpack
Interested to learn more about Simpack? Contact us at sales@4realsim.com.
In today’s competitive landscape, where innovation meets complexity, engineers and analysts constantly seek solutions that balance computational efficiency with simulation accuracy. Enter Flexible Multibody Simulation (FMBS), a game-changer in dynamic analysis. Dassault Systèmes’ SIMULIA Simpack provides an elegant blend of Multibody Simulation (MBS) and Finite Element Analysis (FEA), empowering you to tackle real-world challenges with precision.
Why Flexible Multibody Simulation?
Traditional MBS assumes rigid bodies, delivering quicker solutions for early-stage designs. However, systems often feature components where flexibility cannot be ignored. Full-scale FEA models, while detailed, can be computationally prohibitive for systems with millions of degrees of freedom. Flexible MBS bridges this gap, combining the speed of MBS with the high fidelity of FEA—making it ideal for dynamic analyses, such as vehicle dynamics, suspension alignment, and rail system behaviors.
Key Highlights of SIMULIA Simpack
– Flexibility Meets Scalability: Simpack accommodates both linear and nonlinear flexible bodies using the FlexModal module, supporting scenarios from small deformations to complex fatigue and vibro-acoustic analyses.
– Integration with Industry-Standard Tools: Seamless interfacing with Abaqus, ANSYS, NX Nastran, and more ensures a smooth transition from FEA to FMBS.
– Advanced Coupling Techniques: Through methods like Craig-Bampton and Craig-Chang, Simpack efficiently reduces FEA models, ensuring computational feasibility without compromising accuracy.
Best Practices for Successful Flexible Multibody Simulations
To maximize the potential of FMBS, consider the following guidelines:
– FE Model Preparation: Select interface nodes carefully to ensure structural integrity and uniform load distribution. Use either kinematic or distributing couplings based on application requirements.
– Mode Selection: For accurate results, include eigenmodes up to 1.5 times your frequency of interest. Use cut-off and transformation frequencies to optimize computational performance.
– Quality Checks: Verify Flexible Body Interface (FBI) files thoroughly to ensure consistency in mass properties and avoid ill-conditioning.
– Efficiency in Action: Flexible MBS is revolutionizing how industries approach complex mechanical systems. Imagine developing a new vehicle where suspension components exhibit both rigid and flexible behaviors. Simpack’s FMBS capabilities streamline simulations, helping engineers fine-tune ride comfort and handling without excessive computational overhead.
Flexible Multibody Simulations Conclusion
For those seeking to innovate without compromise, SIMULIA Simpack offers a robust platform to model, simulate, and refine mechanical systems efficiently. As a Dassault Systèmes partner, we at 4RealSim are committed to helping you unlock the full potential of this powerful toolset.
Let’s Simulate Success Together!
Reach out to us to learn how 4RealSim and SIMULIA Simpack can transform your engineering simulations into competitive advantages.
Interested to learn more about Simpack? Contact us at sales@4realsim.com.
Based on the Dassault Systemes White Paper: Best practices: Flexible Multibody Simulation. Download it here.
