Introduction:

In the realm of automotive components, the door belt plays a crucial role in ensuring the flexibility of door glass operation, preventing glass damage, and obstructing the ingress of dust and foreign particles. In this blog post, we delve into the functionality and analysis of the door belt, particularly focusing on its nonlinear characteristics.

Analysis Methodology:

To conduct a comprehensive analysis, we utilized the 3D CAD geometry of the door belt and employed pre-processing capabilities of midas NFX to define material properties, load conditions, and boundary constraints. Paying special attention to the anticipated rubber deformation, we optimized mesh quality using manual mesh refinement features.

Nonlinear Static Analysis:

Emulating real-world scenarios, we performed nonlinear static analysis to scrutinize the compressive load and deformation patterns induced when compressing the model with glass, akin to experimental conditions. This nonlinear static analysis encompasses geometric, material, and contact nonlinearities, ensuring a holistic evaluation.

Material Modeling:

In defining the rubber material, we leveraged a hyperelastic model along with Mooney-Rivilin constants. Should material property constants be unknown, experimental data can be used to derive these values. The NFX platform facilitates this process through the "Evaluate Experiment data" feature.

Consideration of Nonlinearities:

Utilizing rubber material entails accounting for both geometric and material nonlinearities. Furthermore, if contact occurs during the analysis, contact nonlinearities must be addressed.

Conclusion:

In conclusion, this analysis integrates the consideration of all three nonlinearities, providing a comprehensive assessment. By simulating the compressive load exerted during door glass operation,

we evaluated the deformation characteristics and suitability of the door belt model. Such analyses are vital in ensuring the optimal performance and durability of automotive components.