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Composite material wheel optimization method and device based on injection molding residual stress

A technology of residual stress and composite materials, which is applied in the field of wheel design, can solve problems such as the influence of fatigue life of the wheel under stress state, and achieve the effect of improving optimization experience, accuracy and reliability

Inactive Publication Date: 2019-04-19
BEIHANG UNIV
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  • Application Information

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Problems solved by technology

[0003] However, thermoplastic composite wheels adopt injection molding process. During the cooling process, due to the uneven cooling rate of various parts of the wheel, residual stress will be generated. The residual stress will inevitably affect the stress state of the wheel when it is under load and the fatigue life of the wheel.

Method used

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  • Composite material wheel optimization method and device based on injection molding residual stress
  • Composite material wheel optimization method and device based on injection molding residual stress
  • Composite material wheel optimization method and device based on injection molding residual stress

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Embodiment Construction

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0031] The method and device for optimizing composite material wheels based on injection molding residual stress according to the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0032] figure 1 It is a flowchart of an optimization method for a composite material wheel based on injection molding residual stress according to an embodiment of the present invention.

[0033] Such as figure 1 As shown, the optimization method for composite wheels based on injection molding ...

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Abstract

The invention discloses a composite material wheel optimization method and device based on injection molding residual stress, and the method comprises the steps: selecting the target sizes of a wheelspoke and a wheel rim; Determining an orthogonal experiment table according to the size factor and the factor level of the target size; Establishing wheel models of different structures according to parameters in the orthogonal experiment table; Carrying out process mold flow simulation on the wheel model, and obtaining injection molding residual stress distribution and fiber orientation distribution of the wheel structure; Mapping to a wheel structure grid file, and performing CAE analysis and calculation to superpose an analysis result of the injection molding residual stress and the stressunder the load distribution effect; And acquiring the composite material wheel meeting the preset optimization condition. According to the method, the influence of injection molding residual stress can be considered, the more real stress state of the wheel under the load effect is obtained, and therefore a more accurate basis is provided for optimization design of the wheel structure.

Description

technical field [0001] The invention relates to the technical field of wheel design, in particular to an optimization method and device for a composite material wheel based on injection molding residual stress. Background technique [0002] Lightweight is an inevitable trend in the future development of automobiles. Composite materials have the advantages of low density, high specific strength, and strong designability, and have been widely used in automotive parts. Among them, thermoplastic fiber reinforced composite materials have the advantages of low cost and recyclability, and have great potential for lightweight applications. [0003] However, the thermoplastic composite wheel adopts the injection molding process. During the cooling process, the residual stress is generated due to the uneven cooling rate of each part of the wheel. The residual stress is bound to affect the stress state of the wheel when it is under load and the fatigue life of the wheel. Contents of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06Q10/04
CPCG06F30/15G06F30/23G06F2119/04G06F2119/06G06Q10/04
Inventor 胡代钧单颖春刘献栋何田
Owner BEIHANG UNIV
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