Honeycomb Rollcage Padding for Impact Absorption Without Rebound

The patent changes the material parameter from elastic to plastic deformation. The aluminum alloy honeycomb structure is designed to undergo permanent deformation during impact, absorbing energy irreversibly. This is achieved by selecting aluminum alloy with specific mechanical properties and designing the honeycomb cell geometry to ensure plastic collapse rather than elastic rebound, thereby eliminating harmful rebound forces while maintaining impact force reduction

The patent employs a composite structure combining aluminum alloy honeycomb cellular structure with plastic layers. The aluminum alloy provides the primary energy absorption through plastic deformation of the honeycomb cells, while the plastic layers enhance energy dissipation and prevent cell disconnection. This composite approach maximizes energy absorption while eliminating rebound forces that would occur with purely elastic materials

The patent utilizes a honeycomb cellular structure with controlled porosity. The aluminum alloy honeycomb consists of numerous interconnected cells with empty interiors, creating a porous structure that provides high energy absorption capacity relative to its low weight. The cellular geometry allows the material to collapse progressively during impact, absorbing energy while maintaining minimal mass compared to solid foam alternatives

The patent combines aluminum alloy honeycomb with thin plastic layers to create a lightweight composite padding. The aluminum alloy provides the primary structural framework and energy absorption, while the thin plastic layers (total thickness much less than the honeycomb height) enhance performance without significantly adding weight. This composite design achieves superior energy absorption per unit weight compared to traditional foam padding

The patent fundamentally changes the deformation parameter from elastic to plastic. The aluminum alloy honeycomb structure is designed with specific cell geometry and material properties that ensure permanent deformation during impact. The yield strength and ultimate strength of the aluminum alloy are selected to allow controlled plastic collapse of the honeycomb cells, converting the rebound-prone elastic behavior into energy-absorbing plastic deformation that eliminates rebound forces

The patent converts the typically harmful permanent deformation of plastic materials into a beneficial energy absorption mechanism. By designing the aluminum alloy honeycomb to undergo controlled plastic collapse, the permanent deformation becomes the primary energy dissipation mechanism, transforming what would normally be considered a defect (irreversible deformation) into the core protective function that eliminates rebound forces

The patent employs a composite construction where plastic layers are integrated with the aluminum alloy honeycomb structure. The plastic layers are positioned at strategic locations including the base and along the cells, providing mechanical reinforcement that prevents cell disconnection and maintains structural integrity during impact. This composite approach allows the honeycomb to undergo controlled plastic deformation for energy absorption while the plastic reinforcement prevents catastrophic cell separation

The patent incorporates reinforcing plastic layers in advance during manufacturing, positioned at critical locations before impact occurs. The base layer and lateral reinforcement layers are pre-installed to prevent cell disconnection and maintain structural stability during the upcoming impact event. This beforehand reinforcement ensures that when impact occurs, the cells remain connected and oriented properly for effective energy absorption through progressive buckling