Multi-scale porous structure light weight modeling method oriented to 3D printing

Abstract

The invention discloses a multi-scale porous structure light weight modeling method oriented to 3D printing, and belongs to the field of computer aided design and industrial design manufacture. Undera condition that characteristic constraints and a stress condition are given, through a compact support radial basis function interpolation, a smooth multi-scale porous model is constructed; the multi-scale porous model is applied to light weight modeling, and a feasible solving solution is given; through the 3D printing, an entity experiment model is obtained and is subjected to engineering stress verification; according to engineering verification result analysis, a parameter is corrected to enable the hole change of an optimization model to more approach to practical stress requirements; and through the above loop iteration process, a light weight model which meets stress requirements is obtained. By use of the method, a light weight purpose of the entity model can be truly realized, sothat the light weight design optimization period of the model is greatly shortened, the porous structure obtained by design has the advantages of smoothness, full connectivity, controllability and quasi-self-supporting, and the effectiveness and the manufacturability of light weight can be accurately guaranteed.

Description

technical field [0001] The invention belongs to the fields of computer-aided design and industrial design and manufacturing, and relates to a 3D printing-oriented lightweight modeling method for multi-scale hole structures, which is applicable to the lightweight problems of general components, especially applicable to engineering lightweight design and manufacture. Background technique [0002] Lightweighting is one of the most important tasks in the field of modern manufacturing, and its main goal is to keep the mass as small as possible without compromising product usability. Limited by lightweight structure design and optimization methods, and manufacturing methods, traditional lightweight designs often have problems such as simple structure, insufficient applicability (functionality) and controllability (structure and force), and long design cycles. How to develop a lightweight structure with superior performance and controllability, and use efficient optimization metho...

AI Technical Summary

Problems solved by technology

At present, the most widely used structures are simple porous structures, such as honeycomb structures and scaffold structures. The former structure has strong anisotropy and is not fully connected inside, while the latter has poor stability and is prone to stress concentration. Insufficient applicability and controllability of the structure limit its application range

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