Gradient structure for realizing controllable stress-strain rate loading and preparation method

The invention provides a gradient structure for realizing controllable stress-strain rate loading and a preparation method, and relates to the technical field of additive manufacturing and preparation, and the method comprises the following steps: constructing a dielectric substrate model and a plurality of same structure element models through simulation software; the multiple structure element models are arranged on the upper surface of the dielectric substrate model in a preset arrangement mode, so that a gradient structure STL model is formed, and the sectional areas of the structure element models are gradually increased from the direction away from the dielectric substrate model to the direction close to the dielectric substrate model; the gradient structure STL model is preprocessed to obtain a gradient structure slice model, and the gradient structure slice model comprises a plurality of two-dimensional slices with the same thickness; and preparing an area density gradient structure corresponding to t