The arrangement patterns optimization of 3D honeycomb and 3D re-entrant honeycomb structures for energy absorption

In the design of lattice structures for energy absorption, arrangement pattern optimization has not been inves-tigated in 3D space previously. In this work, a systematic method is proposed to optimize the arrangement pattern for 3D honeycomb and 3D re-entrant honeycomb structures. A new sample multiplication method is proposed as a supplement technique to gather sufficient training data while reducing time consumption by 93.75%. Simulations and experiments show that the ideal arrangement pattern proposed by this method in -creases the energy absorption capacity by 43% in equivalent lateral deformation. Further investigation dem-onstrates that the combination of different lattice structures in particular local arrangement pattern can alter their local mechanical behavior, thereby improving global performance. This optimization further unleashes the design potential of lattice structures and could provide some reference for future engineering application.

Automated summary

This study proposes a systematic method to optimize the arrangement pattern for 3D honeycomb and 3D re-entrant honeycomb structures in lattice design for energy absorption. A new sample multiplication method is introduced to gather sufficient training data and reduce time consumption by 93.75%. Simulations and experiments demonstrate that the proposed arrangement pattern significantly increases the energy absorption capacity by 43% in equivalent lateral deformation. Furthermore, the combination of different lattice structures and specific local arrangement patterns can alter their mechanical behavior and improve overall performance. This optimization unleashes the design potential of lattice structures and provides reference for future engineering applications.