A Finite Element Parametric Modeling Method for Seamed Sandwich Panels
A parametric modeling, sandwich panel technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as optimal design of difficult-to-sew composite sandwich panels, complex sandwich panels, etc. , to shorten the modeling cycle, improve unit quality, and improve analysis efficiency.
Active Publication Date: 2018-08-21
SOUTHEAST UNIV
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Problems solved by technology
However, due to the complex structure of sandwich panels with different stitching line densities and stitching angles, there is currently a lack of efficient parametric finite element modeling methods for stitched sandwich panel structures, and it is difficult to achieve optimal design of stitched composite sandwich panels
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[0030] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.
[0031] Such as figure 1 As shown, the present invention provides a finite element parametric modeling method for stitched sandwich panels, comprising the following steps:
[0032] (1), obtaining the geometric characteristic parameters of the stitched sandwich panel;
[0033] Such as figure 2 As shown, the stitched sandwich panel includes an upper panel 1, a lower panel 2 and a sandwich layer 3 in the middle, the sandwich layer 3 is bonded to the upper panel 1 and the lower panel 2 through an adhesive layer, and a seam 4 Stitched together; the geometric size of the stitched sandwich panel is selected as 250mm×300mm×12mm, that is, the length of the stitched sandwich panel is L=250mm, width W=300mm, thickness H=12mm, and the thickness of the upper panel is h 1 1mm, the thickness of the lower panel h 2 1mm, the thickness of the sandwich layer...
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The invention discloses a finite element parametric modeling method of a seaming laminboard. The method comprises steps that 1, geometrical characteristic parameters of the seaming laminboard are acquired; 2, finite element modeling characteristic parameters of the seaming laminboard are acquired; 3, a seaming laminboard finite element model database is built by adopting a geometrical matching relation; 4, the steps are programmed into parametric modeling script programs, and a finite element model of the seaming laminboard can be constructed. According to the finite element parametric modeling method of the seaming laminboard, finite element modeling is conducted on the seaming laminboard, the parametric modeling method is adopted, finite element analysis models of the seaming laminboardunder parameter variables such as different sizes and seaming line densities can be quickly and conveniently obtained through MATLAB and MSC.PCL language interaction programming, then the modeling period is effectively shortened, the unit quality is improved, the analysis efficiency and precision are improved, and efficient and high-precision analysis of the seaming composite material laminboard can be achieved.
Description
technical field [0001] The invention relates to a finite element modeling of composite materials, in particular to a finite element parametric modeling method of a seamed sandwich panel. Background technique [0002] Seamed sandwich panels generally consist of upper and lower panels, sandwich layers and seams. Panels often use high-performance fiber-woven composite materials, which have the advantages of high specific strength, high specific stiffness, low density, good fatigue resistance, and high temperature resistance. They are the main load-bearing structure of stitched sandwich panels; The layer adopts lightweight foam material, which not only makes the sandwich panel have good heat insulation performance, but also keeps the panel away from the neutral plane, so that the sandwich panel has excellent bending performance; It is stitched together with the core layer, and then cured and molded by resin, which effectively strengthens the face-core connection of the sandwich...
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IPC IPC(8): G06F17/50
Inventor 李彦斌杨轩费庆国吴邵庆陈强
Owner SOUTHEAST UNIV