Method for quickly acquiring thickness distribution of special-shaped curved surface structure
A technology of special-shaped curved surface and curved surface structure, applied in the direction of measuring devices, instruments, etc., can solve the problems of low efficiency and low precision, and achieve the effects of high efficiency, improved accuracy and improved precision
Active Publication Date: 2018-06-29
NANJING FIBERGLASS RES & DESIGN INST CO LTD
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[0003] The invention provides a method for quickly obtaining the thickness distribution of the special-shaped curved surface structure, and solves the technical problems of low efficiency and low precision in the method for obtaining the thickness distribution of the special-shaped curved surface structure in the prior art
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[0027] In order to better understand the present invention, the content of the present invention is further illustrated below in conjunction with the embodiments, but the content of the present invention is not limited to the following embodiments.
[0028] A method for quickly obtaining the thickness distribution of a special-shaped curved surface structure, comprising the following steps:
[0029] 1), create the special-shaped surface structure model, figure 1 As shown, select the reference point, and divide the upper and lower surfaces of the surface structure into meshes. The mesh is rectangular, and the mesh size is 1.25*3.333. figure 2 shown;
[0030] 2), establish a three-dimensional rectangular coordinate system OXYZ with the reference point as the coordinate origin, in which the X axis is parallel to the width direction of the surface structure, the Z axis is parallel to the length direction of the surface structure, and the Y axis is parallel to the thickness direc...
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The invention discloses a method for quickly acquiring thickness distribution of a special-shaped curved surface structure. For a variable thickness curved surface solid structure prepared plane profiling, thickness accuracy of the solid structure when being unfolded into a plane from a curved surface greatly influences structure forming quality, and a method for acquiring unfolding thickness of the special-shaped curved surface structure does not exist at present. For solving the problem, an efficient and high-accuracy method provided by the invention comprises the following steps: based on agrid partition model of the structure, carrying out fragmentation treatment on the curved surface structure by adopting an interpolation method, obtaining sheet body thickness according to geometrictopological relation of the structure and unfolding the structure, and finally carrying out integral superposition, so that unfolding thickness distribution of the curved surface structure is obtained.
Description
technical field [0001] The invention relates to the field of profiled preparation systems for special-shaped structures, in particular to a novel thickness distribution acquisition method of a special-shaped curved surface structure. Background technique [0002] Plane profiling preparation is a preparation method in which the surface structure cannot be directly formed, but the structure is prepared by unfolding the plane, and then the mold is deformed to obtain the structure. The accuracy of conversion from surface structures to flat models becomes a key constraint on product quality. Especially for variable-thickness special-shaped curved surface structures, there is currently no good thickness acquisition method. At this stage, most of the methods are used to obtain the approximate thickness by unfolding the middle surface and measuring the points. This method not only requires a lot of time and is inefficient, but the accuracy is also affected by the measurement method...
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IPC IPC(8): G01B21/08
Inventor 赵谦朱立平王启兴孙雪坤吕士武
Owner NANJING FIBERGLASS RES & DESIGN INST CO LTD