Additive manufacturing method and system for foam material with continuously controllable gradient change

Abstract

The invention discloses an additive manufacturing method and system for a gradient change continuous and controllable foam material. The additive manufacturing method comprises the steps that size data of a gradient foam material are obtained; setting a gradient distribution configuration of the cell size of the gradient foam material; generating coordinates of a plurality of cell element core points according to the gradient distribution configuration and the size data of the gradient foam material, wherein the position of the newly generated cell element core point is related to the position of the existing cell element core point; establishing a geometric model of the axial gradient foam material with a mesoscopic cell element structure according to the coordinates of the plurality of cell element core points, wherein each cell element has a tetrakaidecahedron structure; and additive manufacturing is conducted according to the geometric model of the axial gradient foam material. According to the invention, the foam material with continuous and controllable gradient change can be prepared.

Description

technical field [0001] The invention relates to the technical field of foam materials and additive manufacturing, in particular to a method and system for additive manufacturing of foam materials with continuously controllable gradient changes. Background technique [0002] As a typical representative of energy-absorbing materials, foam materials have the characteristics of light weight, high specific stiffness, and high specific strength. Therefore, they are widely used in the fields of cushioning energy absorption and impact protection. Much favored. In the process of impact protection, on the one hand, the foam material can reduce the peak load of the impact force to within the tolerance limit of the human body; Longer, lower the momentum. However, the actual application scenario presents complex and variable loading conditions, and it is difficult for a single homogeneous foam material to meet the specific impact protection requirements. For example, under high-speed ...

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a method and system for additive manufacturing of foam materials with continuous and controllable gradient changes, so as to solve the existing problem that foam materials with continuous and controllable gradient changes cannot be prepared

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