Automotive Floor Panel Bead Optimization for Vibration Noise Reduction

The patent applies parameter changes by systematically optimizing bead parameters (position, shape, size, angle, orientation) through vibration mode analysis and equivalent radiated power calculation. Instead of empirical arrangement, the method calculates optimal parameter values based on vibration characteristics, achieving both noise reduction and design efficiency improvement through mathematical optimization rather than trial-and-error approaches.

The patent applies local quality by providing beads only in specific locations and orientations where they are most effective for noise reduction. The optimization process determines precise bead parameters (position, shape, size, angle, orientation) for each location, creating non-uniform local modifications rather than uniform thickness increase. This allows targeted vibration control without adding unnecessary weight across the entire panel.

The patent applies segmentation by analyzing and optimizing multiple vibration modes separately through vibration mode analysis. The method segments the vibration problem into different modes (first vibration mode, second vibration mode, etc.) and determines optimal bead parameters for each mode. By combining multiple bead arrangements optimized for different modes, the solution achieves comprehensive vibration control across multiple transmission paths and vibration modes simultaneously.