Method for applying initial defect of rod piece in direct analysis method

An analysis method and technology of rods, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as difficulty in adding initial defects of components, insufficient technology, etc., and achieve the effect of simple operation and good interactivity

Pending Publication Date: 2021-10-15
SUZHOU INDAL PARK DESIGN & RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] To sum up, it is difficult to add the initial defects of the existing members and the technology is insufficient. Therefore, we propose a method of adding the initial defects of the members in the joint analysis method

Method used

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  • Method for applying initial defect of rod piece in direct analysis method
  • Method for applying initial defect of rod piece in direct analysis method
  • Method for applying initial defect of rod piece in direct analysis method

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Embodiment Construction

[0028] The accompanying drawings in the embodiments of the present invention will be structured below to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described examples are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029]

[0030] Comparison of application features of direct analysis software

[0031] The buckling mode is the best choice for adding the initial defects of the structure. Many softwares such as SAP2000, MIDAS, and NIDA support buckling analysis, and also support the automatic addition of buckling displacements to the structure. Therefore, it is very convenient to add the initial defects of the structure as a whole, and there is no need to...

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Abstract

The invention provides a method for applying an initial defect of a rod piece in a direct analysis method, and relates to a steel structure direct analysis method. The method comprises the steps of, after a rod piece unit in a model is obtained, judging the type of a rod piece, wherein the model is a three-dimensional entity finite element model established in finite element software SAP2000; based on the rod piece type, conducting angle adjustment on the rod piece unit with local shaft rotation; based on the rod piece type, setting a defect direction and an offset vector of a rod piece unit; based on member type, defect direction and offset vector, assigning initial defects to member elements. According to the method, the defects that at present, the initial defects of components are difficult to add and the technology has defects are overcome. The initial defects of the rods are applied in a direct analysis method by designing an API interface provided by software, the initial defect can be conveniently and quickly applied to the rod piece, the operation is simple, and the interactivity is good.

Description

technical field [0001] The invention relates to a direct analysis method of a steel structure, in particular to a method for applying the initial defect of a bar in a design software by the direct analysis method. Background technique [0002] The direct analysis method in steel structure design introduces the initial defects of the whole and members into the structural mechanics model, and the initial defects of the structure and members need to be considered in the mechanical model at the same time. Structural overall initial imperfections are due to construction errors and overall initial inclination. The overall initial geometric defect mode of the structure can be adopted as the lowest order buckling mode. Such as Figure 3-4 As shown, the maximum value Δ0( image 3 ) can be taken as H / 250, where H is the total height of the structure. The overall initial geometric defect representative value of the frame and supporting structure can also be determined according to f...

Claims

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Application Information

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IPC IPC(8): G06F30/23G06F30/13G06F119/14
CPCG06F30/23G06F30/13G06F2119/14
Inventor 杨律磊王慧张谨龚敏锋
Owner SUZHOU INDAL PARK DESIGN & RES INST
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