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Three-dimensional structure reinforcing method based on central axis
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A technology of central axis and structures, applied in the field of 3D model reinforcement solutions, can solve problems such as insufficient strength and excessive consumption of reinforcement materials, and achieve the effects of simple calculation, enhanced strength, and reduced production costs
Active Publication Date: 2020-02-11
杭州电子科技大学上虞科学与工程研究院有限公司
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[0004] The purpose of the present invention is to address the shortcomings of insufficient structural strength and excessive consumption of reinforcement materials in existing three-dimensional structures, and to provide a reasonable and general reinforcement scheme for three-dimensional structure reinforcement
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Embodiment 1
[0040] When the present invention is used in a hollow structure in the shape of a rectangular parallelepiped, its final reinforcement form is as follows: figure 1 shown. The following is based on figure 1 , describing the process of building a central axis for its corresponding 3D model:
[0041] 1) First, there are 8 vertices in the cuboid model. Take the P5 vertex as an example to judge the concavity and convexity of the vertex:
[0042] The elements directly connected to the P5 vertex include 3 edges passing through the P5 vertex and 3 faces passing through the P5 vertex. Since there can be no inclusion relationship between the three elements used for the inscribed sphere, the three elements that satisfy the There are two groups of combinations:
[0043] Group 1: Side P5-P1, Side P5-P7, Side P5-P6
[0044] The second group is: face P5-P1-P3-P7, face P5-P7-P8-P6, face P5-P6-P2-P1
[0045] When tangent to the three elements of the first group, the sphere does not belong ...
Embodiment 2
[0053] The frame diagram of the present invention used in the reinforcement of the cube model is as follows: image 3 As shown, its reinforcement scheme is the same as the most common and very stable diagonal reinforcement method, which further illustrates the reliability and universality of this scheme.
Embodiment 3
[0055] The frame diagram of the present invention used in the reinforcement of the triangular pyramid model is as follows: Figure 4 As shown, its reinforcement scheme is the same as the most common and very stable diagonal reinforcement method, which further illustrates the reliability and universality of this scheme.
[0056] It should be noted that the reinforcement method in the present invention can have many applications in the real industrial field. This 3D model reinforcement solution will be generally used for reinforcement of most 3D models. By using the central axis as the main frame of the model , so as to obtain better model strength and reduce material usage. It can be manifested in different three-dimensional structures to be reinforced that are selected:
[0057] For example, in 3D printing technology, materials are a huge expenditure. This reinforcement solution can be used to greatly reduce the use of materials and reduce costs while maintaining the model st...
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Abstract
The invention discloses a three-dimensional structure reinforcing method based on a central axis, and belongs to the field of model reinforcing. According to the method, the central axis in the two-dimensional graph is expanded into a three-dimensional space, and a line jointly formed by the centers of all internally tangent balls with three or more tangent points on the edge of the graph is defined as the central axis in the three-dimensional space. The central axis of the 3D model is used as a reinforcing frame, so that the strength of the three-dimensional structure is remarkably enhanced,and the material use cost is reduced. A breadth-first growth strategy is adopted for calculation of the central axis, that is, the central axis must pass through the convex vertex and extend into themodel, and the central axis of the model is obtained in combination with a similar tree-shaped structure so as to reinforce the model. The three-dimensional structure reinforcing scheme can be universally used for reinforcing most of 3D polyhedral objects, the central axis serves as a main body frame of the model, and therefore good model strength is obtained, and material consumption is reduced.
Description
technical field [0001] The invention belongs to the field of reinforcement schemes for 3D models, and in particular relates to a reinforcement method for three-dimensional structures based on a central axis. Background technique [0002] A reasonable 3D model reinforcement scheme can not only greatly enhance the stability of the 3D model structure, but also significantly reduce the use of materials. For example, in the process of 3D model printing, the stability of the 3D model and the amount of materials required for printing greatly affect the performance of the 3D printing product and the stability of the printed 3D model. However, the reinforced concrete structure used in the construction field, due to its extremely single structure scheme, has a very limited degree of structural reinforcement and consumes a large amount of materials, so there are relatively large defects. In the real world, there are many problems due to the inability to balance the relationship betwee...
Claims
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