Numerical simulation method of novel high-strength steel spoke drawing punching combined process

A numerical simulation, high-strength steel plate technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of high cost, restricting the popularization and use of new high-strength steel materials, long cycle, etc., to reduce product scrap rate, The effect of improving process design and improving product quality

Inactive Publication Date: 2014-10-01
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

For the stamping forming process of high-strength steel wheel spokes, the existing research methods mainly rely on trial and error, which has the disadvantages of long cycle time and high cost, which seriously restricts the popularization and use of new high-strength steel materials in the field of passenger car wheel spoke manufacturing.

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  • Numerical simulation method of novel high-strength steel spoke drawing punching combined process
  • Numerical simulation method of novel high-strength steel spoke drawing punching combined process
  • Numerical simulation method of novel high-strength steel spoke drawing punching combined process

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Embodiment Construction

[0040] The invention is a numerical simulation method of a novel high-strength steel wheel spoke drawing and punching process. Taking the deep-drawing and punching process of the wheel spoke of a certain company as the object, Meishan Iron and Steel B550CL high-strength steel is used as the spoke material, and a specific embodiment of the present invention is given. The steps are as follows:

[0041] Step 1. Establish a three-dimensional finite element model of the spoke deep drawing process:

[0042] ①Establishment of constitutive model of B550CL high-strength steel sheet. Based on the ABAQUS software platform, the geometric model of the blank is established, and the dimensions of the blank are as follows: figure 2As shown, the thickness t=4.6mm. According to the tensile test, the elastic modulus of B550CL high-strength steel sheet is E=172.44GPa, Poisson’s ratio v=0.3, and the yield strength σ 0.2 =349.01MPa, tensile strength σ b =615.89MPa, strength coefficient K=1048....

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Abstract

The invention discloses a numerical simulation method of a novel high-strength steel spoke drawing punching combined process. By means of establishment of an accurate finite element model, a forming process of a novel high strength steel plate for spoke production can be observed, distribution of wall thickness, stress, strain and damages in the spoke forming process can be obtained, possible forming defects such as excessively thinning and pull cracks of the plate in the spoke forming process can be discovered in time, forming properties of the plate can be evaluated in advance before the novel high strength steel plate is used for spoke actual production, thereby, the process design scheme can be effectively improved, mold parameters can be optimized, spoke product qualities are improved, rejection rate of products is reduced, large manpower and material inputs caused by trial and error can be avoided, the market competitiveness of the high-strength steel products is improved, application and development of novel high-strength steel wheels are facilitated, and the basis is provided for optimization of steel for high-strength wheels.

Description

1. Technical field [0001] The invention belongs to the field of wheel spoke manufacturing, and in particular relates to a numerical simulation method for a novel high-strength steel spoke drawing and punching composite process. 2. Background technology [0002] The wheel spoke is the main support connecting the rim and the hub of the car, and it is also a key part of the safety of the wheel. The traditional materials for manufacturing the spokes are mainly aluminum alloy and low carbon steel. With the continuous improvement of the automotive industry's requirements for safety performance and product lightweight, high-strength steel is widely used in spoke forming due to its safety and economical advantages such as lower yield ratio and lower cost than lighter materials. . [0003] The spoke stamping forming process consists of multiple processes, including deep drawing punching, forming, edge trimming, punching holes, and burrs in the pressure holes. The deep-drawing and p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 刘郁丽龙婵娟姜志远杨合万兰凤
Owner NORTHWESTERN POLYTECHNICAL UNIV
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