Rapid complex shell thickness optimization design method based on maximum equivalent stress

A technology of maximum equivalent stress and optimal design, applied in design optimization/simulation, calculation, special data processing applications, etc., can solve problems such as complex, special plate and shell structure, difficult plate and shell theoretical calculation, etc., to achieve easy solution, The effect of small amount of calculation

Inactive Publication Date: 2017-11-14
GUIZHOU UNIVERSITY OF FINANCE AND ECONOMICS
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method based on the maximum equivalent stress rapid optimization design method for complex plate and shell thickness, which can quickly calculate the optimal thickness of the complex plate and shell structure under

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  • Rapid complex shell thickness optimization design method based on maximum equivalent stress
  • Rapid complex shell thickness optimization design method based on maximum equivalent stress
  • Rapid complex shell thickness optimization design method based on maximum equivalent stress

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but the content of the present invention is not limited to the stated scope.

[0036] Embodiments of the invention: attached figure 1 It is the method step diagram of the present invention, according to the theoretical relationship between the stress, load, displacement and stiffness matrix in the finite element theory and the plate and shell theory, deduce the optimal plate and shell thickness calculation formula based on the maximum equivalent stress, the method of the present invention The specific implementation steps are: Step 1, assuming the thickness is h 1 and h cr The plate and shell structure is a plate and shell structure with the same network type and network division, boundary conditions and loads, anisotropic materials, and only different thicknesses, where the thickness h 1 is an arbitrary known initial value, the thickness h cr unknown,...

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Abstract

The invention relates to a rapid complex shell thickness optimization design method based on maximum equivalent stress and belongs to the field of rapid optimization design of mechanical structures. According to the method disclosed by the invention, the optimal shell thickness calculation formula based on the maximum equivalent stress is deduced according to a theoretical relation among the stress, load, displacement and stiffness matrix in a finite element theory and a plate shell theory. Aiming at the complex shell structure, since the influence of the complex structure characteristic on the structural performance cannot be neglected, the thickness of the complex shell is difficult to be directly calculated by the plate shell theory. The method is capable of rapidly calculating the optimal solution under the condition that the corresponding maximum equivalent stress is met, and has the advantages of rapidness, small calculation amount, simplicity in solution and the like.

Description

technical field [0001] The invention belongs to the field of rapid optimization design of mechanical structures, and relates to a method for rapid optimization design of complex plate shell thickness based on maximum equivalent stress. Background technique [0002] Plate shell is a typical engineering component, and its thickness dimension is much smaller than other characteristic dimensions. As complex plate and shell structures are widely used in aerospace, instrument components and marine engineering, their safety has attracted more and more attention, and the design of plate and shell thickness is directly related to its mechanical properties. Therefore, it is particularly important for designers to determine the plate thickness quickly and accurately. [0003] Since the influence of complex structural features on structural performance cannot be ignored, it is difficult to directly calculate the thickness of complex plates and shells using plate and shell theory. At p...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/23
Inventor 吴盛彬夏换崔晓静
Owner GUIZHOU UNIVERSITY OF FINANCE AND ECONOMICS
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