Method for reconstructing complex morphology of flexible platy structure based on two-dimensional orthogonal curvature
A technology with complex structures and flexible plates, which is applied in the reconstruction of flexible plate-like structures based on two-dimensional orthogonal curvature and the reconstruction of complex shapes of flexible plate-like structures. The problem of large amount of collected data is achieved to overcome the effect of low reconstruction accuracy of complex deformation based on one-dimensional unidirectional curvature information, high detection accuracy, and small amount of collected data
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Embodiment 1
[0055] see figure 1 , the complex shape reconstruction method of flexible plate structure based on two-dimensional orthogonal curvature, is characterized in that: the specific operation steps are as follows: (1) the establishment of orthogonal curve network: using optimally designed discrete distributed orthogonal fiber gratings to form transmission Sense network, by obtaining the two-dimensional orthogonal curvature information of each grating measuring point on the surface of the plate structure, and on the basis of continuous curvature, the plate structure is meshed, and the orthogonal curve network of the plate structure is established; ( 2) Node coordinate recursion: construct a motion coordinate system on the orthogonal curve network, use the motion coordinate system to calculate the relative coordinates of the measurement points under the motion coordinate system, and calculate its global coordinates on this basis; (3) Coupling transformation of the motion coordinate sys...
Embodiment 2
[0057] see Figure 2 to Figure 10 , the present embodiment is basically the same as Embodiment 1, and the special features are as follows:
[0058] The establishment of described step (1) orthogonal curve network, concrete steps are as follows:
[0059] Continuous curvature: Due to the limited and discrete nature of the grating measurement points, direct fitting and reconstruction cannot accurately reflect the deformation of the plate-like structure, and reasonable interpolation is performed on unmeasured points to achieve continuous curvature; the interpolation algorithm adopted is a linear interpolation algorithm;
[0060] ● Orthogonal curve network construction: On the basis of continuous curvature, select two measurement points with the same distance Δs, and connect the measurement points from the coordinate axes u and v directions of the two-dimensional space to form an orthogonal curve. arc-length grid; the orthogonal curvatures of the measurement points are the curvat...
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