Elastic-plastic analyzing method based on finite elements

An analysis method and elastoplastic technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems that affect the forming of plastic forming parts, poor quality of raw materials, and plastic forming processes that do not follow correct regulations, etc.

Inactive Publication Date: 2014-04-23
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The poor quality of raw materials and the plastic forming process are not carried out according to the correct regulations, which not only affects the forming of plastic formed parts, but also often causes various quality problems of plastic formed parts

Method used

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Embodiment Construction

[0012] The present invention relates to a kind of elastoplastic analysis method based on finite element, comprises the following steps:

[0013] 1) First discretize the continuous medium body, then divide the continuum into finite units and then solve the problem. The units are regular geometric shapes, and then use the divided units to find the field variables;

[0014] 2) Select the interpolation function, after dividing the units, select the form of polynomial interpolation function to represent the field variables;

[0015] 3) Establish the basic equation of the unit and analyze the unit;

[0016] 4) Collect the established equations and use the relationship between the units to systematically and orderly synthesize the system equations between the units into the overall matrix type equations;

[0017] 5) Solve the unknown node values ​​in the field variables according to the matrix type equations;

[0018] 6) Solve the calculation parameters according to the node values...

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Abstract

The invention discloses an elastic-plastic analyzing method based on finite elements. The method includes 1) discretizing a continuous medium body, then dividing the continuous medium body into infinite elements in the regular geometrical shape to conduct calculation and then utilizing the divided elements to calculate a field variable; 2) selecting an interpolation function and selecting a polynomial interpolating function mode to show the field variable after the elements are divided; 3) building basic equations of the elements to analyze the elements; 4) collecting the built equation sets and orderly combining system equation sets between the elements into an integral matrix type equation set by utilizing the relation between the elements; 5) calculating unknown nodal values in the field variable according to the matrix type equation sets; 6) calculating various parameters according to the nodal values to obtain an analyzing result. By means of the elastic-plastic analyzing method, elastic-plastic analysis can be conducted quickly and effectively, and the analyzing result is obtained.

Description

technical field [0001] The invention relates to an elastic-plastic analysis method based on finite element. Background technique [0002] The poor quality of raw materials and the plastic forming process are not carried out according to the correct regulations, which not only affects the forming of plastic formed parts, but also often causes various quality problems of plastic formed parts. Common defects in raw materials mainly include: capillary cracks, scars, folds, non-metallic inclusions, carbide segregation, heterometallic inclusions, white spots, and shrinkage cavity residues. This requires the analysis of the main problems (cracks, folding, instability) that cause the quality of formed parts during the plastic forming process. Contents of the invention [0003] The purpose of the present invention is to provide an elastoplastic analysis method based on finite element for the defects in the prior art. [0004] In order to achieve the above object, the present inve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 王镇江张献文
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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