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Elastic-plastic buckling bearing capacity calculation method

A calculation method and technology of bearing capacity, applied in the fields of calculation, computer-aided design, special data processing application, etc.

Inactive Publication Date: 2019-09-27
SOUTHWEST JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0025] The purpose of the present invention is to provide a calculation method for elastoplastic buckling capacity to solve or improve the above-mentioned problems in view of the above-mentioned shortcomings in the prior art

Method used

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  • Elastic-plastic buckling bearing capacity calculation method

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Embodiment Construction

[0065] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0066] According to an embodiment of the present application, refer to figure 1 , the elastic-plastic buckling capacity calculation method of this scheme includes:

[0067] S1. Carry out linear elastic analysis on the truss structure under the load condition, and determine the most unfavorable member of the truss structure under the load condition;

[0068] S2. Calculate and obtain the linear elastic buckling capacity of t...

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Abstract

The invention discloses an elastic-plastic buckling bearing capacity calculation method which comprises the following steps: S1, carrying out linear elasticity analysis on a truss structure under a stress load condition, and determining the most unfavorable rod piece of the truss structure under the load condition; S2, calculating and acquiring the linear elastic buckling bearing capacity and the elastic-plastic buckling bearing capacity of the most unfavorable rod piece of the truss structure; S3, calculating the elastic-plastic buckling bearing capacity of the truss structure according to the elastic-plastic buckling bearing capacity of the most unfavorable rod piece of the truss structure; S4, respectively calculating the elastic-plastic buckling bearing capacity of the truss structure by adopting a characteristic value buckling analysis method and a riks analysis method in finite element software Abaqus, comparing and analyzing the obtained elastic-plastic buckling bearing capacity result of the truss structure and the calculated elastic-plastic buckling bearing capacity result of the truss structure so as to verify the correctness and feasibility of the elastic-plastic buckling bearing capacity of the truss structure.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and in particular relates to a method for calculating elastic-plastic buckling bearing capacity. Background technique [0002] Due to its special structural form, the truss structure is mainly subjected to axial tension or pressure, which can fully exert the role of structural materials and reduce the self-weight of the structure, so it has been widely used in engineering practice. However, the length and slenderness of general steel members are relatively large, so the stability of truss structures is a major problem in the application of truss structures. At the same time, a large number of scholars have done a lot of research and analysis on the stability of truss structures. [1-8] . Sun Huanchun et al. (2005) [1] By discussing the buckling stability theory of truss structures, a calculation method for linear elastic buckling capacity of truss structures is proposed. Ke Qiuhong et...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/13
Inventor 张明谷任奇潘毅
Owner SOUTHWEST JIAOTONG UNIV
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