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.
CN110287637AInactive Publication Date: 2019-09-27SOUTHWEST JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SOUTHWEST JIAOTONG UNIV
Publication Date
2019-09-27
Estimated Expiration
Not applicable · inactive patent

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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.
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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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