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Method for obtaining optimized parameters of multi-ring sleeved tungsten alloy flywheel

A technology for optimizing parameters and obtaining methods, applied in multi-objective optimization, design optimization/simulation, electrical digital data processing, etc., can solve problems such as large workload, lack, and low efficiency, and achieve the effect of improving design efficiency

Inactive Publication Date: 2021-02-12
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] There are few researches on the design of this new type of flywheel structure in the existing literature. How to optimize the design of the radial dimensions of each layer of the flywheel and select the appropriate interference has always been a difficult problem. The method of repeated trial calculation and checking in the project has not only reduced the workload Large and inefficient, there is still a lack of a safe and efficient rapid design method to solve the optimal design problem of size distribution and interference of this kind of multi-ring set heavy metal flywheel

Method used

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  • Method for obtaining optimized parameters of multi-ring sleeved tungsten alloy flywheel
  • Method for obtaining optimized parameters of multi-ring sleeved tungsten alloy flywheel
  • Method for obtaining optimized parameters of multi-ring sleeved tungsten alloy flywheel

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Embodiment 1

[0087]Such asFigure 1-Figure 8Shown:

[0088]A method for obtaining optimized parameters of a multi-ring set tungsten alloy flywheel. The multi-ring set tungsten alloy flywheel includes a main shaft, an inner hub, a tungsten alloy intermediate layer and an outer retaining ring that are sequentially sleeved from the inside to the outside, and the tungsten alloy intermediate layer and the outer retaining ring Set the interference between them for assembly,

[0089]The optimization parameter acquisition method is used to obtain the optimized value of the interference between the tungsten alloy intermediate layer and the outer retaining ring when the allowable stress value is the optimization target, and when the energy storage density and the moment of inertia are the optimization targets, the inner wheel hub, tungsten The optimized size of the alloy intermediate layer and outer retaining ring;

[0090]The method for obtaining optimized parameters includes the following steps:

[0091]S1. Use ABAQ...

Embodiment 2

[0097]Such asFigure 1-Figure 8Shown:

[0098]On the basis of the above embodiment,

[0099]The parametric finite element model is a 1 / N basic structure finite element model, and the 1 / N basic structure finite element model is a finite element corresponding to a basic structure obtained by intercepting the 1 / N part of a multi-ring set tungsten alloy flywheel Model; a 1 / N basic unit structure finite element model contains two adjacent tungsten alloy intermediate layers; the value of N is equal to the number of tungsten alloy intermediate layers in the multi-ring set tungsten alloy flywheel;

[0100]The parametric finite element model is a two-dimensional plane stress model.

[0101]The specific process of creating a parametric finite element model is:

[0102]S11. Under the graphical interface CAE of the ABAQUS software, create the components corresponding to the main shaft, the inner hub, the tungsten alloy intermediate layer and the outer retaining ring required for the parametric finite element m...

Embodiment 3

[0139]Such asFigure 1-Figure 8Shown:

[0140]Take the PWR AP1000 nuclear main pump multi-ring set tungsten alloy flywheel as an example (e.g.figure 1 ,figure 2 Shown), the specific implementation of the present invention will be described in conjunction with the technical solution and the drawings. The following radial dimensions are projected dimensions in the radial direction, and can also be regarded as the difference between the inner and outer diameters of the ring.

[0141]The first step is to establish a parametric finite element model of a multi-ring set tungsten alloy flywheel based on the parametric modeling function of the ABAQUS script language.

[0142]First, simplify the flywheel model:

[0143]The load on the multi-ring set tungsten alloy flywheel mainly includes four parts: its own gravity, centrifugal force caused by rotation, prestress caused by interference fit, and thermal stress caused by high temperature environment. Because gravity load has less effect on structural stres...

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Abstract

The invention discloses a method for obtaining optimized parameters of a multi-ring sleeved tungsten alloy flywheel. The method comprises the following steps: establishing a parameterized finite element model of the multi-ring sleeved tungsten alloy flywheel by using ABAQUS software; establishing a parameterized finite element analysis file of the multi-ring set tungsten alloy flywheel by using ABAQUS software; adopting iSIGHT optimization design software for building a DOE test design model, and obtaining a test design matrix; calling ABAQUS software to analyze and calculate each data point in the test design matrix by writing. Bat files to generate DOE sample data; based on DOE sample data, adopting an RBF radial basis function to construct a neural network agent model, obtaining a mathematical model between factors and responses, obtaining the interference magnitude optimization value between a tungsten alloy middle layer and an outer retaining ring with the allowable stress value as the optimization target by mining the internal relation of the data under the constraint condition, and obtaining the optimal interference magnitude of the tungsten alloy middle layer and the outerretaining ring. The size optimization values of the inner hub, the tungsten alloy middle layer and the outer retaining ring are optimized by taking the energy storage density and the rotational inertia as optimization targets.

Description

Technical field[0001]The invention relates to the field of computer-assisted obtaining of optimization parameters of mechanical structures, in particular to a method for obtaining optimized parameters of a multi-ring tungsten alloy flywheel.Background technique[0002]Flywheel is a typical mechanical energy storage device. It stores kinetic energy at high speed and releases this part of energy for use at low speed to achieve the purpose of energy storage and conversion. It is widely used in automobiles, aerospace, and power systems. And nuclear power. One of the important performance indicators of the energy storage flywheel is the energy storage density, that is, the kinetic energy that can be stored per unit mass. Increasing the energy storage density can increase the material utilization rate, reduce the flywheel system's own weight and reduce the bearing burden. When the flywheel material and working speed are limited, the structural form determines the level of energy storage den...

Claims

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Application Information

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IPC IPC(8): G06F30/17G06F30/23G06F30/27G06F111/04G06F111/06G06F119/14
CPCG06F30/17G06F30/23G06F30/27G06F2111/04G06F2111/06G06F2119/14
Inventor 姜露张瀛张丽屏刘贞谷庾明达田俊傅孝龙杜娟邵雪娇邝临源卢岳川
Owner NUCLEAR POWER INSTITUTE OF CHINA
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