Porous structure modeling method and preparation method with controllable pore characteristics and modulus matching
A porous structure and modulus matching technology, applied in 3D modeling, special data processing applications, instruments, etc., can solve the problems of complex steps, time-consuming, large curve error, and re-modification, and achieve material weight reduction and good mechanical properties , The effect of reducing the quality of the workpiece
Active Publication Date: 2019-01-04
CHONGQING UNIV
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For the former, because the number of feature points is too small, the curve fitted by the feature points has a large error with the target porous structure curve, and when a model of a different size is required, it is necessary to re-take the feature points and then fit the curve and surface, step Complicated and time-consuming; for the latter, the accuracy is relatively high, but the disadvantage is that the structure obtained inversely from the point cloud is composed of facet features connected by points, rather than smooth surface features, which cannot be modified later , can only be used as a model for processing
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[0064] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation or in a specific way construction and operation, therefore, should not be construed as limiting the invention. The terms "first", "second", "third", etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0065] A porous structure modeling method with controllable pore properties and modulus matching, comprising the following st...
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The invention discloses a porous structure modeling method with controllable pore characteristics and modulus matching, comprising the following steps: 1) setting the porous structure characteristics;2) establishing a characteristic curve; 3) establishing a continuous surface; 4) surface thickening. The modeling method of the invention establishes a boundary curve through a strict parameter function, and only needs to input a cube space side length value and a thickness value of a required cell in a user-defined tool, and the model can automatically update the latest parameters, without repeated adjustment from the first step, and has very free adjustability.
Description
technical field [0001] The invention relates to a modeling method, in particular to a modeling method and preparation method of a porous structure with controllable pore characteristics and modulus matching. Background technique [0002] In the fields of aerospace and biological implants, there are requirements for lightweight parts and implants. In terms of biological implants, implants have high porosity to induce cell growth and repair while meeting mechanical requirements. need. However, the existing porous structure materials have defects such as difficult to precisely control the porosity and high production costs. One of the reasons is the difficulty in modeling the structure. Modeling in the prior art generally adopts two methods: one is to take the feature points on the structure boundary in space, use these feature points to fit a polynomial curve, and then use the curve to approximate the method of fitting the surface; the other is to use the structure to obtain...
Claims
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Login to View More IPC IPC(8): G06F17/50G06T17/00
CPCG06T17/00G06F30/17G06F30/20
Inventor 唐倩马帅冯琪翔宋军刘威梁平华刘宗敏范小杰
Owner CHONGQING UNIV