Vehicle Side Sill Assembly Reinforcement Stiffness

The patent changes the material parameter from aluminum to steel and modifies the structural parameters by creating a multi-member reinforcement unit with specific geometric configurations (first, second, and third reinforcement members with varying thicknesses and orientations). This allows achieving the required stiffness with steel while controlling weight through optimized geometry rather than relying solely on material density

The patent creates a composite reinforcement structure by combining multiple steel reinforcement members (first reinforcement member with first thickness, second reinforcement member with second thickness, third reinforcement member with third thickness) into a unified reinforcement unit. This composite approach allows different sections to have different thicknesses optimized for their specific structural roles, achieving overall stiffness equivalence to aluminum while using cost-effective steel material

The patent divides the reinforcement structure into multiple segmented members (first reinforcement member, second reinforcement member, third reinforcement member) with distinct functions and orientations. This segmentation allows each member to efficiently resist specific directional forces, achieving comprehensive stiffness enhancement while minimizing total material usage and weight compared to a solid monolithic reinforcement

The patent varies the thickness parameters across different reinforcement members (first thickness, second thickness, third thickness) to optimize the stiffness-to-weight ratio. Thinner sections are used where less structural support is needed, while thicker sections are strategically placed for maximum stiffness efficiency, thereby achieving required overall stiffness with minimized weight