Dataset for the paper, "A Nonlinear 3D Vibration Isolator with Multi-level Triply Periodic Minimal Surface Structures".

Nonlinear vibration isolators with high-static-low-dynamic stiffness (HSLDS) effectively combine load-bearing capacity and vibration isolation. However, current nonlinear isolators face challenges in achieving 3D designs with tailored geometries and performance due to increased computational complexity in dynamic analysis and heightened modeling difficulties. This study proposes a design method for nonlinear 3D vibration isolators based on multi-level triply periodic minimal surfaces (TPMS), while distinct TPMS parameters are assigned to each level to enhance stiffness tunability. A versatile repair method is developed for both connectable and non-connectable pinch-off when modeling. A self-adaptive surrogate model algorithm is developed, enabling efficient structural design of the proposed multi-level TPMS structures while significantly reducing computational efforts during optimization. Different vibration isolators are designed with considerations of low-amplitude, high-amplitude, and irregular geometries requirements, and the experimental prototypes are fabricated using additive manufacturing. The related HSLDS characteristics, effective vibration isolation performance and irregular geometries compatiblity have been demonstrated in simulations and experiments.