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Method for selecting packing for roll bending of integral panel based on finite element analysis

An integral wallboard and finite element technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as complex operation, consumption of manpower and material resources, improve design efficiency, shorten design cycle, reduce The effect of design costs

Inactive Publication Date: 2014-01-22
TIANJIN UNIV
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Problems solved by technology

The method of experimentation can effectively find the suitable packing type, but the operation is complicated, consumes manpower and material resources, and is not suitable for use in the design process.

Method used

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  • Method for selecting packing for roll bending of integral panel based on finite element analysis
  • Method for selecting packing for roll bending of integral panel based on finite element analysis
  • Method for selecting packing for roll bending of integral panel based on finite element analysis

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Embodiment Construction

[0028] Computational analysis methods include:

[0029] 1) In the ANSYS / LS-DYNA environment, define the roller as a rigid body, input parameters and impose constraints in the RIGIT model in the software. The 2219 aluminum alloy integral panel is defined as an elastic-plastic model, and the parameters are input in the Bilinear Kinematic model in the software. Three kinds of rubber fillers with different hardness are selected, and the rubber material uses a hyperelastic model, and the parameters are input in the Mooney Rivlin model in the software.

[0030] Input the following parameters into the software. Table 1 shows the performance parameters of the 2219 aluminum alloy siding material. Table 2 shows the performance parameters of rubber fillers with three different hardnesses. First, input the performance parameters of rubber 1. Table 3 shows the roller performance parameters. Table 4 shows the Constraints imposed on rollers, panels and fill:

[0031] Table 1

[00...

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Abstract

The invention discloses a method for selecting packing for roll bending of an integral panel based on finite element analysis. ANSYS / LS-DYNA calculation software is used in the method, and the method comprises the following steps of defining material models of rollers, panels and the packing, establishing and segmenting geometric models, dividing lattices on the geometric models, applying restrictions and speed load to an upper roller and a lower roller, carrying out solving, and analyzing and comparing the straightness, the residual stress and the unit strain obtained through post-processing results to obtain a preferred packing variety. According to the method, the optimized packing variety is obtained by selecting different varieties of packing to carry out comparison through the method of the finite element, the method can be directly used for guiding the selection of the packing in actual production, therefore, the design period is shortened greatly, design cost is reduced, and design efficiency is improved. Meanwhile, the method is an environment-friendly production mode, and large amount of economy, environment and social benefit can be generated for enterprises and the society.

Description

technical field [0001] The invention relates to a method for selecting fillers for integral wall plate bending based on finite element analysis, which belongs to the wall plate rolling technology. Background technique [0002] Integral siding is processed from a whole slab, and the reinforced parts such as the skin and the stringer frame are made into an integral stiffened panel without the use of connection technology. Due to its light weight and high strength, integral panels have broad application prospects in spacecraft and other components that require weight reduction. Integral panels are widely used in aircraft, launch vehicles and other aircraft. The large one-piece panels used in launch vehicle tanks need to be rolled and bent to form ring segments, which are then welded into rings. However, the overall wall plate has a complex internal and external structure, and the deformation of each part of the wall plate is uneven during roll bending, which causes the ribs to...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 师春生张智锋赵乃勤何春年刘恩佐李家俊
Owner TIANJIN UNIV
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