Structural material rapid selection method based on finite element analysis

A technology for fast selection of structural materials, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as difficult material selection

Inactive Publication Date: 2017-11-10
GUIZHOU UNIVERSITY OF FINANCE AND ECONOMICS
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for fast selection of structural materials based on finite element analysis, by which the material properties of the structure can be quickly calculated and judged to meet the natural frequency conditions of the corresponding maximum displacement and the corresponding order, so that Solve the problem of difficult material selection in structural design

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  • Structural material rapid selection method based on finite element analysis
  • Structural material rapid selection method based on finite element analysis
  • Structural material rapid selection method based on finite element analysis

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Embodiment Construction

[0056] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but the content of the present invention is not limited to the stated scope.

[0057] Embodiments of the invention: attached figure 1 It is a method step diagram of the present invention, according to the theoretical relationship between load, displacement and stiffness matrix in the finite element theory, it is deduced that the structure satisfies the corresponding maximum displacement requirement (maximum displacement≤ μ 2 ) under the condition of material Young's modulus calculation formula, and the structure satisfies the frequency f of the corresponding j order j The relational expression of structural material Young's modulus and material density under the condition, the concrete realization step of the inventive method is: step 1, setting structural material is certain arbitrarily known material, and the Young's modulus of this material is E 1 , w...

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Abstract

The invention relates to a structural material rapid selection method based on finite element analysis, and belongs to the field of mechanical structure finite element analysis. Two relational expressions of Young's modulus of a structural material satisfying corresponding design requirement conditions are deduced respectively through a theoretical relationship among a load, displacement and a stiffness matrix in a finite element theory, and a material meeting requirements can be selected rapidly by means of simple calculation and judgment through the two relational expressions, so that a rapid selection way is provided for the selection of the structural material. The method comprises the following specific implementation steps: firstly, solving a maximum displacement and corresponding j-order inherent frequency when the structural material is any certain known material through the finite element analysis; secondly, bringing a solving result and a corresponding design requirement into corresponding expressions, and calculating a material Young's modulus satisfying a requirement; and lastly, selecting an appropriate material according to the result. The method disclosed by the invention has the advantages of rapidness, small calculated amount, easiness in solving and the like.

Description

technical field [0001] The invention belongs to the field of finite element analysis of mechanical structures, and relates to a fast selection method of structural materials based on finite element analysis. Background technique [0002] Material selection is a very important part of mechanical structure design. Mechanical properties such as material stiffness, shock resistance, and thermal deformation are related to the working accuracy of the machine, as well as the safety, reliability and service life of the mechanical structure, which to a large extent Depending on the material properties, choosing the appropriate material for the mechanical structure can avoid unnecessary losses during the use of the machine. [0003] The selection of mechanical engineering materials is very important and quite complicated and cumbersome. The selection of structural materials in mechanical structure design mainly depends on the designer's knowledge and experience, or copy the existing h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/23
Inventor 吴盛彬郭庆秋郭晓庆
Owner GUIZHOU UNIVERSITY OF FINANCE AND ECONOMICS
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