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Prediction System of Mechanical Properties of Integral Hollow Sandwich Composite Materials

An overall hollow, composite material technology, applied in the direction of instruments, calculations, electrical digital data processing, etc., can solve the problems of long calculation time, heavy modeling workload, and inconvenient parameter analysis, etc., to achieve simple operation, save test time and The effect of high cost and high accuracy of forecast results

Active Publication Date: 2019-08-20
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

The three-dimensional solid finite element model can describe the mesoscopic structure and stress distribution of textile composite materials in detail, but its disadvantages are heavy modeling workload, long calculation time, and inconvenient parameter analysis

Method used

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  • Prediction System of Mechanical Properties of Integral Hollow Sandwich Composite Materials
  • Prediction System of Mechanical Properties of Integral Hollow Sandwich Composite Materials
  • Prediction System of Mechanical Properties of Integral Hollow Sandwich Composite Materials

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Embodiment Construction

[0058] The system for predicting the mechanical properties of the integral hollow sandwich composite material of the present invention includes a mechanical property forecast model and a visual forecast module; the microscopic unit cell model of the integral hollow sandwich composite material is established, and the mechanical property forecast model is established by using the analytical method in MATLAB; the GUI module based on MATLAB A graphical user interface is established, and the program of the mechanical performance prediction model is embedded in it, and the mechanical performance of the overall hollow sandwich composite material under various working conditions is predicted by calling the function, forming a visual prediction system.

[0059] The mechanical performance prediction model mainly includes: on the basis of the mesoscopic unit cell model of the overall hollow sandwich composite material, determine the yarn specification, yarn density, panel thickness, core m...

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Abstract

The invention relates to a mechanical performance forecasting system for a hollow integrated sandwich composite material. A graphic user interface is established based on a GUI module of MATLAB in combination with a cell-element model; a mechanical performance forecasting program is embedded; and a function is called through input variables such as yarn specifications, yarn density, panel thickness, core height, yarn types, resin types and the like to obtain output variables: the rigidity and strength of the hollow integrated sandwich composite material in warp and weft directions under a lateral pulling (pressing) condition, the strength of the hollow integrated sandwich composite material under a horizontal pulling (pressing) condition, and bending rigidity and strength of unit width of the hollow integrated sandwich composite material in the warp and weft directions under a four-point bending condition. According to the system, the operation is simple; various mechanical performances of the hollow integrated sandwich composite material can be quickly forecast; the forecast precision is high; the material design period can be effectively shortened; and the test time is shortened and the test cost is reduced.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of resin-based composite materials, and in particular relates to a system for predicting the mechanical properties of an integral hollow sandwich composite material, which is used for the working conditions of the integral hollow sandwich composite material in side tension, side compression, flat tension, flat compression, and four-point bending. Prediction of mechanical properties. [0003] Background technique: [0004] The overall hollow sandwich composite material is a new type of sandwich structure material. Compared with traditional sandwich materials, it has the advantages of light weight, delamination resistance, and impact resistance. Wide application prospects. Therefore, it is of great practical significance to accurately predict its mechanical properties. [0005] At present, the prediction of the mechanical properties of the overall hollow sandwich composite material is mainly through t...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/367G06F2113/24
Inventor 刘畅周光明蔡登安王狄辉王宇朱基炜金兴瑜陆方舟李文龙
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS