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ABAQUS three-dimensional infinite element boundary rapid modeling method based on INP file

A modeling method and infinite technology, applied in the field of fast modeling of ABAQUS three-dimensional infinite element boundary based on INP file, which can solve the problems of low modeling efficiency and cumbersome modeling process.

Inactive Publication Date: 2017-09-08
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a fast modeling method of ABAQUS three-dimensional infinite element boundary based on the INP file, which overcomes the cumbersome modeling process and low modeling efficiency of the existing boundary infinite element model of ABAQUS, considering the characteristics of ABAQUS infinite element and The characteristics of ABAQUS input INP file model definition, simple operation, high degree of automation, can generate infinite element mesh in a short period of time, greatly improving the modeling efficiency of ABAQUS

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  • ABAQUS three-dimensional infinite element boundary rapid modeling method based on INP file
  • ABAQUS three-dimensional infinite element boundary rapid modeling method based on INP file
  • ABAQUS three-dimensional infinite element boundary rapid modeling method based on INP file

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Embodiment Construction

[0115] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0116] Such as figure 1 As shown, the ABAQUS three-dimensional infinite element boundary fast modeling method based on INP file in the embodiment of the present invention comprises:

[0117] The three-dimensional model completed based on the three-dimensional unit grid division, and the rear center point of the three-dimensional model is located on the origin of the coordinate system, and the X axis, the Y axis and the Z axis of the coordinate system are its symmetry axes;

[0118] 101. Establish the finite element model and create the specified Part boundary node set as the near-field node set of the infinite element, and export the ABAQUS input file (Job-1.inp);

[0119] Establish ABAQUS / CAE three-dimensional finite element model such as figure 2 As shown, according to the research question, use the set tool under the Part module...

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Abstract

The invention discloses an ABAQUS three-dimensional infinite element boundary rapid modeling method based on an INP file and belongs to the field of infinite element boundary modeling. According to an infinite unit defined theory, a method defined by a node and a unit in an ABAQUS input file.inp is utilized and an infinite unit defined data row is output with the help of a Python programming technology; and an input file is generated according to a syntax rule of the INP file and is introduced into ABAQUS / CAE, so that automatic generation of an ABAQUS infinite element boundary is realized. The ABAQUS infinite element boundary rapid modeling method is simple to operate and an ABAQUS infinite element boundary model can be generated within short time; and the ABAQUS modeling speed is extremely improved.

Description

technical field [0001] The invention relates to an infinite element boundary modeling method, in particular to an ABAQUS three-dimensional infinite element boundary rapid modeling method based on an INP file. Background technique [0002] The emergence and rapid development of computers provide powerful tools for engineering analysis, making it possible to use numerical simulation to solve many large-scale engineering practical problems. As the most commonly used numerical simulation method, the finite element method is widely used in geotechnical, structural, earthquake and water conservancy engineering fields. The problem faced by the finite element method is how to use a "finite" model to simulate the actual "infinite" area. The common solution is to ignore the influence of the "infinite" area boundary according to Saint-Venant's principle, and use the truncated boundary to take "enough" The size of the model is divided into finite element meshes of the geometric size, a...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/23G06F2111/10
Inventor 雷波漆泰岳刘诣轩
Owner SOUTHWEST JIAOTONG UNIV
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