Computer aided design method for egg-shaped shell line form

A computer-aided and design method technology, applied in calculation, special data processing applications, instruments, etc., can solve problems such as design and calculation methods that cannot be solved well, combined with point mutations, difficulties, etc.

Active Publication Date: 2015-07-22
王开明
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  • Application Information

AI Technical Summary

Problems solved by technology

For the first case, a large number of practices have shown that it is almost impossible to find a clothoid curve segment that meets the specific design requirements and form a perfect oval curve after insertion; in the second and third cases, the formed oval curves exist to varying degrees Sudden changes in curvature, or combined with point mutations; it is relatively simple to use elliptical lines to form oval curves, but the degree of compliance with actual needs is often limited, so the design of oval shell lines and oval containers is still relatively difficult
[0003] To sum up, there is a wide demand for oval curves in engineering construction design, but the design and calculation methods for oval curves have not been well resolved, so their application and development are limited.

Method used

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  • Computer aided design method for egg-shaped shell line form
  • Computer aided design method for egg-shaped shell line form
  • Computer aided design method for egg-shaped shell line form

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0185] Linear calculation example of oval shell

[0186] Design requirements: It is required to design an oval butterfly-shaped shell with a diameter of about 65 meters, a center height of about 12 meters, and an edge height of about 3 meters.

[0187] Reference figure 2 And chart 6, specific design calculation:

[0188] (1) According to the design requirements, create a rectangle with a long side of 65 meters and a short side of 12 meters; set up a coordinate system based on the center of the rectangle, with the vertical axis as the X axis and the horizontal axis as the Y axis; design calculations It adopts a large circle on the positive half axis of the X axis and a small circle on the positive half axis of the Y axis.

[0189] Select the radius of the big circle through trial calculation: R 1 =160 meters; since the edge height is limited to 3 meters, the radius of the small circle is selected: R 2 = 3 meters; the intersections of the four arcs with the rectangular tangent point an...

Embodiment 2

[0286] Calculation example of structural linear design of oval vessel

[0287] Design requirements: It is required to design an oval container structure line with a maximum diameter of about 28 meters and a height of about 42 meters. The top of the oval container has a smaller radius, and the radius of the bottom curve is slightly larger than that of the top and bottom asymmetric oval container structure lines. .

[0288] Reference image 3 , Figure 4 , Figure 5 , Chart 7 and Chart 8, the specific design calculation steps are as follows:

[0289] (1) According to the design requirements, establish a rectangle with a long side of 42 meters and a short side of 28 meters, adopting a vertical type; the coordinate system is established with 22 meters below the top of the rectangle as the largest diameter of the midsection and the center of the short side , The vertical axis is the X axis, and the horizontal axis is the Y axis; the upper half of the container is 22 meters high, and the ...

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Abstract

The invention discloses a computer aided design method for an egg-shaped shell line form, relates to the technical field of egg-shaped curve computer aided design and provides a reliable and generally-applicable computer aided design method for the egg-shaped shell line form. The design method comprises the steps that a rectangle is established according to the geometric dimension requirement of an egg-shaped shell to be designed, a computer software Excel table is adopted for calculating the parameters and coordinates of a middle easement curve, the calculation result data of the coordinates of the middle easement curve are imported point by point in a CAD fundamental figure, and the egg-shaped shell line form is formed. By means of the computer aided design method, the egg-shaped shell line form can be easily designed, and the shell line form of an egg-shaped container and an egg-shpaed curve formed through a design method for the structural line form of an egg-shaped component can be easily designed.

Description

Technical field [0001] The invention relates to the technical field of computer-aided design of oval curves, in particular to a computer-aided design method for oval shell lines. Background technique [0002] Ovals and oval curves are common in nature. Because of their good mechanical properties and smooth and beautiful lines, they have a wide range of application requirements in engineering. However, due to the formation of oval curves, there is always no reliable and universal application in design calculations. The method limits the practical application. The key to the linear design of the oval shell is to solve the oval curve design that constitutes the oval shell. The current method of forming the oval curve is to insert a section of the cut curve; the other is to insert a curve between the large garden and the small garden. Transitional circular curve; third is the use of non-concentric circular curve splicing; fourth is the use of elliptical line. For the first case, a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 王开明
Owner 王开明
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