NFX|汽车饰件(Door Belt)非线性分析

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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

其他非线性应用案例

示例1

铰链active hood hinge

When a car hits someone, the active hood hinge lifts the hood a bit.
This makes the impact softer, helping to keep the pedestrian safer and prevent serious injuries.

We looked into how the active hood hinge works when it gets hit.
We found out that it really does make a big difference in keeping people safe.
It's a key piece in making cars safer for both people walking around and those driving.

For important parts like this that are all about safety, they have to go through simulation during the design process.
That's where simulation software comes into play.
The multi-disciplinary integrated analysis capabilities of midas NFX, known for its non-linear dynamic analysis, can provide results that closely match real-world experiments.
This means designers and engineers can rely on it to test and improve the active hood hinge's effectiveness before it ever gets made.

Cars are always getting safer thanks to new studies and tech, and the active hood hinge is part of this progress.
By using advanced software for simulations, engineers can ensure these components do their job well, making our roads safer for everyone.

示例2

尼龙网（Nylon net limite）