A modeling method and system for anisotropic porous structure

Abstract

The present disclosure provides a modeling method and system for an anisotropic porous structure. The modeling method of anisotropic porous structure includes generating the distribution of sampling points according to the given three-dimensional shape and tensor field. The tensor matrix is defined as a measure of the anisotropy of each sample point, and the anisotropic Gaussian kernel function ofeach sample point is defined in combination with the tensor matrix. Computation of combinatorial anisotropic Gaussian kernel function; The level set value is set for the combined anisotropic Gaussiankernel function, and the width of the Gaussian kernel function at each sampling point is adjusted by changing the domination range of each kernel. Combined anisotropic Gaussian kernel function as Morse function, the maximum point, minimum point, 1- Saddle point and 2-Saddle point, construct Morse-Smale complex structure; Morse-based- Smale complex structure, each core and its topological neighbors are connected by channels, and the discontinuous solid parts are connected by channels, which generates the porous structure model of fully connected open pores and fully connected fixed parts.

Description

technical field [0001] The present disclosure relates to the field of modeling porous structures oriented to 3D printing, and in particular to a modeling method and system for anisotropic porous structures. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] Porous structure is an indispensable part of natural structure. It has many ideal physical properties and can be widely used in medical fields, chemical engineering and civil engineering. However, the complex geometry of the porous structure makes it difficult to fabricate it in traditional ways, especially for non-uniform porous structures. The emergence of 3D printing enables the fabrication of complex structures given a digital model, which provides powerful manufacturing capabilities and further broadens the application of porous structures at different scales. [0004] There have b...

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Problems solved by technology

However, the inventors found that this method focuses on mechanical optimization and cannot guarantee a fully connected porous structure

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