Radome electromagnetic performance analysis method under force load

An analysis method and radome technology, applied in electrical digital data processing, image data processing, 3D modeling, etc., can solve the problems of radome electrical and mechanical properties that cannot be optimized at the same time, high iteration cost, and long R&D cycle.

Active Publication Date: 2020-06-12
SOUTHEAST UNIV
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Problems solved by technology

[0003] Purpose of the invention: In view of the above problems, the present invention provides a method for analyzing the electromagnetic performance of a radome under a force load, which solves the problem that the

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  • Radome electromagnetic performance analysis method under force load
  • Radome electromagnetic performance analysis method under force load
  • Radome electromagnetic performance analysis method under force load

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[0079] The technical solutions of the present invention will be described in detail below, but the protection scope of the present invention is not limited to the embodiments.

[0080] The present invention proposes a method for analyzing the electromagnetic performance of a radome under a force load, which specifically includes the following steps:

[0081] S1: Establish the finite element model for mechanical calculation of the radome and the undeformed finite element model for electromagnetic calculation;

[0082] S1.1: Based on the HyperMesh software, divide the hexahedral element finite element mesh for the geometric structure of the radome, and initially establish the mechanical calculation finite element model;

[0083] The specific size of the hexahedron unit is: 100mm.

[0084] S1.2: Based on the HyperMesh software, the outer surface of the radome geometric structure is divided into triangular element finite element meshes, and an undeformed finite element model for ...

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Abstract

The invention provides a radome electromagnetic performance analysis method under a force load. The method mainly comprises the following steps: S1, establishing a radome mechanical calculation finiteelement model, and electromagnetically calculating an undeformed finite element model; s2, adding material attributes to the mechanical finite element model established in the step S1, applying aerodynamic load and boundary conditions, and completing solving of a static problem; and S3, carrying out post-processing on the calculation result of S2, and extracting node displacement. S4, reconstructing the finite element model in S3 based on Python language to obtain a deformed finite element model under aerodynamic load; s5, reconstructing the finite element model deformed in the step S4 basedon HyperMesh software to obtain an electromagnetic calculation finite element model, and completing the analysis of the wave transmission performance of the radome under the aerodynamic load; s6, electromagnetic medium parameter setting and antenna modeling of the electromagnetic calculation finite element model established in the step S1.2 are completed, original-state radome wave-transparent performance analysis is completed, and the original-state radome wave-transparent performance analysis is compared with the calculation result in the step S5.

Description

technical field [0001] The invention belongs to the interdisciplinary field of computational electromagnetic structural strength, and in particular relates to a method for analyzing the electromagnetic performance of a radome under a force load. Background technique [0002] With the development trend of high-speed and lightweight in the aerospace field, the design of "heavy" aircraft is no longer the mainstream. On the premise of meeting flight safety, lightweight and high-performance structural forms are always in the aerospace field. goal to achieve. In the design process of the entire aircraft, since the radome is located at the forefront of the entire aircraft and bears a series of problems such as the complex pressure field during high-speed flight, the radome is also responsible for protecting the entire aircraft radar guidance system and other key electronic systems. Therefore, it is very important to jointly calculate the comprehensive mechanical properties and ele...

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Application Information

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IPC IPC(8): G06F30/23G06T17/00G06F119/14
CPCG06T17/00
Inventor 费庆国何东泽李彦斌陈强谭福颖杨利鑫
Owner SOUTHEAST UNIV
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