A modeling method and system for anisotropic porous structure
An anisotropic, porous structure technology, applied in 3D modeling, instrumentation, design optimization/simulation, etc., can solve problems such as inability to guarantee porous structure, and achieve the effect of ensuring connectivity
Active Publication Date: 2020-11-10
SHANDONG UNIV
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However, the inventors found that this method focuses on mechanical optimization and cannot guarantee a fully connected porous structure
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[0061] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
[0062] It should be noted that the terminology used herein is only for describing specific embodiments, and is not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.
[0063] Explanation of terms:
[0064] Morse function: Let the function f be a continuous differentiable real function defined ...
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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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IPC IPC(8): G06F30/10G06F30/20G06T17/00B33Y50/00G06F113/10
CPCG06F30/20G06T17/00
Inventor 吕琳田李昊陈伟凯夏阳王昌凌王文平
Owner SHANDONG UNIV