Assembly soldering plate welded seam finite element modeling method based on vehicle collision simulation

A modeling method and tailor-welded blank technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems such as the report that no tailor-welded blank welding seam modeling method has been found, and achieve simple node layout, The effect of high simulation solution stability and high simulation solution efficiency

Inactive Publication Date: 2008-08-20
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0004] After checking the novelty of the existing technology, no report was found on the modeling method of tailor-welded blanks in automobile collision simulation

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  • Assembly soldering plate welded seam finite element modeling method based on vehicle collision simulation
  • Assembly soldering plate welded seam finite element modeling method based on vehicle collision simulation
  • Assembly soldering plate welded seam finite element modeling method based on vehicle collision simulation

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Embodiment Construction

[0033] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0034] The following examples are as follows figure 1 The process shown is carried out, simulating the vertical weight of 293.3kg in the case of a tailor-welded blank hat-shaped straight beam composed of three sections of foundation plates (base plate 1, base plate 2, and base plate 3) fixed at one end The drop hammer hits at an initial velocity of 42km / h. The total length of the hat-shaped beam is 1000mm, which is divided into two welds (weld 1 and weld 2) evenly into tailor-welded welds with thicknesses of 0.7mm, 1.8mm and 1.2mm respectively. Motherboard, section s...

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Abstract

The invention relates to a finite element modeling method for the welding line of a soldering board based on vehicle crash simulation, belonging to the vehicle computer-aided design technique field, comprising the following steps: first, baseplate modeling, which comprises baseplate hard spot arrangement, baseplate reseau partition, and baseplate reseau translation; second, building a double-beam welding line model, which comprises space nodes arrangement, a double-beam manufacturing, and connection of the beam and baseplate; third, the attribute assignment of the double-beam unit, which comprises the attribute assignment of beam unit material and the attribute assignment of the beam unit section; fourth, moving the built welding line model of the soldering board and the baseplate reseau model into an impact finite element computational model. The invention considers the material attributes of the welding line, as well as considers the shape of the welding line, can accurately simulate the deformational behavior of the welding line in crash simulation, enhances the simulation accuracy of vehicle crash, is rapid and effective, and is easy to master technicist.

Description

technical field [0001] The invention relates to a method in the technical field of automobile computer-aided design, in particular to a finite element modeling method for tailor welded blank welds based on automobile collision simulation. Background technique [0002] Tailored welded blank technology emerged in the 1990s. It is to weld several pieces of steel with different strengths and thicknesses into a whole plate to meet the different requirements of parts for material properties. At present, the tailor-welded blank technology has been applied in a large number of high-end cars, such as POLO, BUICK, MAZDA, CADILLAC and so on. In order to obtain the crashworthiness of automobiles at the initial stage of design to meet increasingly stringent national regulations, automotive computer-aided design (CAE) technology is widely used in the evaluation of automobile crashworthiness, which not only reduces test costs but also reduces design cycle. In order to accurately simulate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 朱平施欲亮陈关龙张宇潘锋
Owner SHANGHAI JIAO TONG UNIV
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