Optimal design method for spliced and welded plate automobile door

A technology of optimization design and optimization method, applied in calculation, special data processing applications, instruments, etc., can solve problems such as time-consuming, not enough to guide the design of tailor-welded blank parts, and it is difficult to achieve the optimization of tailor-welded blank door at the same time

Inactive Publication Date: 2012-11-28
HUNAN UNIV
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Problems solved by technology

However, the relevant research results are not enough to guide the design of tailor-welded blank parts, which greatly restricts the promotion and application of tailor-welded blank technology
In particular, there is no effective method for determining the optimal position of the weld line
In the traditional method of tailor-welded blank car door design, the layout of the weld line is mainly determined based on experience, that is, the determination of the tailor-welded scheme; after the

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  • Optimal design method for spliced and welded plate automobile door
  • Optimal design method for spliced and welded plate automobile door
  • Optimal design method for spliced and welded plate automobile door

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Embodiment Construction

[0083] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0084] The present invention applies the two-way progressive structure optimization method, the sensitivity analysis method and the size optimization method to the design of the tailor-welded blank car door. After the specific location is determined, the sensitivity analysis method and size optimization method are used to establish a lightweight optimization model of the door system based on the response of different working conditions, and perform optimization calculations.

[0085] (1) Establishment of the finite element model of the door stiffness condition

[0086] Such as figure 2 Shown is the finite element model of a typical tailor-welded blank car door studied in the embodiment of the present invention. The static stiffness of the car door is the ability of the car door to resist deformation when it is subjected to static lo...

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Abstract

The invention relates to an optimal design method for a spliced and welded plate automobile door, and aims to rationally design the spliced and welded plate automobile door, reduce the number of parts, reduce the weight of the automobile door, improve the rigidity of the automobile door and improve the collision safety of an automobile. The optimal design method comprises the following steps of: determining arrangement of weld lines of the spliced and welded plate automobile door by a bidirectional progressive topological optimization method, namely the design of a splicing and welding scheme; after specific positions of the weld lines are determined, namely the splicing and welding scheme is determined, dividing an inner plate of the automobile door into several regions by the weld lines, wherein the regions represent spliced and welded plates of different thicknesses; and constructing an automobile door system light-weight optimal model based on different working condition responses by a sensitivity analysis method and a size optimization method, performing optimal calculation, and determining the specific thickness of each spliced and welded plate of the inner plate of the automobile door.

Description

technical field [0001] The present invention relates to an optimal design method for a tailor-welded blank car door, in particular to a layout of weld lines for a tailor-welded blank car door based on a two-way progressive topology optimization method, that is, the design of a tailor-welded blank scheme, on which size optimization is adopted The method further determines the specific thickness value of each tailored welded blank sheet. Background technique [0002] In recent years, the number of automobiles in the world is increasing day by day, which affects and changes people's work and lifestyle to a greater extent. However, the automobile industry is also facing a series of problems such as energy shortage and environmental pollution. Saving energy and reducing environmental pollution have become automobile There are two core problems that the industry needs to solve urgently. According to statistics, for every 10% weight loss of a car, the fuel consumption can be reduc...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 孙光永李光耀龚志辉徐峰祥陈刚强
Owner HUNAN UNIV
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