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Frictional wear CAE (Computer Aided Engineering) analysis-based mold optimization method

A technology of friction and wear, optimization methods, used in special data processing applications, instruments, electrical digital data processing, etc.

Active Publication Date: 2015-04-29
HUNAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Aiming at the deficiencies of the existing ultra-high-strength steel stamping die wear analysis method, the present invention provides a die optimization method based on friction and wear CAE analysis

Method used

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  • Frictional wear CAE (Computer Aided Engineering) analysis-based mold optimization method
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  • Frictional wear CAE (Computer Aided Engineering) analysis-based mold optimization method

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Embodiment 1

[0083] Taking the molding process mold of Chevrolet Malibu front longitudinal beam middle reinforcement as an example, the CAE analysis and mold optimization of mold wear are carried out. The sheet material is DP780 steel, and the mold material is commonly used Cr12MoV.

[0084] step one

[0085] In the finite element software, the finite element grid model of the mold is set up, the sheet material is thick 1mm, and the tetrahedron unit size is set to 1mm when meshing, and the grid unit number obtained is 38038; the mesh of the sheet The grid unit used in the lattice model is a solid unit; the material model of the plate is an elastic-plastic model; The number of grid units of the mold model is respectively: 341391 dies, 381928 punches, and 310173 upper blank holders; the grid units used in the grid model of the mold are solid units; the material model of the mold is an ideal rigid model. The wear model of the mold used is the Archard theoretical wear model;

[0086] step t...

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Abstract

The invention relates to a frictional wear CAE (Computer Aided Engineering) analysis-based mold optimization method, and belongs to the technical field of stamping dies of automotive structural parts. The method comprises the following steps: (1) establishing a mesh model and determining a material model of a plate and a mold and an Archard wear model; (2) defining conditions such as a material parameter, a motion parameter, a constraint condition, simulation steps and working environment parameters by combining actual working conditions; (3) performing simulation calculation under the conditions defined in the step (2) to obtain a plate forming result and a model wear result; (4) changing a mold hardness parameter, a mold material parameter and the motion parameter respectively under the condition that other simulation conditions are not changed to perform calculation so as to obtain wearing capacity of the mold and analyze the influence of different parameters on mold wear; (5) supposing the mold wear every thousand times as a constant value, predicting service life before mold repair; (6) obtaining actual wear after the mold wear in production through a test method and verifying the feasibility of the CAE analysis method.

Description

technical field [0001] The invention aims to provide a mold optimization method based on friction and wear CAE analysis, which belongs to the technical field of stamping molds for automobile structural parts. Background technique [0002] It is an inevitable choice for the development of the automobile industry to produce automobiles with low fuel consumption and low emissions and to achieve energy saving and emission reduction. Due to its high strength, ultra-high-strength steel can meet the requirements of automobile lightweight, crash safety, energy saving and emission reduction, and has been widely used in important parts such as automobile body structure and safety reinforcement. Die wear is the most common failure of stamping dies, and it is also the most important factor affecting die life. At the same time, the wear of the mold will also affect the shape, size and surface quality of the stamping workpiece. Due to the high yield strength and high tensile strength of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCY02T10/40
Inventor 谢晖王诗恩李江曼褚卫东张文彦王东福
Owner HUNAN UNIV
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