Method for constructing slab- girder structure of train body in analysis of train structure

A technology of structural analysis and plate beam, applied in railway car body, railway car body parts, special data processing applications, etc., can solve the problems of singularity, narrow application range and large overall structural stiffness
CN101650758AInactive Publication Date: 2010-02-17CENT SOUTH UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CENT SOUTH UNIV
Publication Date
2010-02-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for constructing a slab-girder structure of a train body in the analysis of a train structure, which is used for solving the static force problem of a slab- girder combined structure in a train body steel structure. The method is characterized by comprising the following steps: constructing the slab-girder combined structure at a connection part of a girder unit and a slab unit, constructing an eccentric displacement relation of eccentric nodes when the slab unit is eccentrically connected with the girder unit; then formulating finite element programs constructing the slab-girder combined structure based on a penalty element method and a Lagrange multiplicator method respectively, wherein the finite element programs are respectively used for solving the static force problem of the slab- girder combined structure and the static force problem when the slab unit or the girder unit independently exists. The method can solve the contribution problem of theslab unit to the combined structure total rigidity matrix because of eccentric connection, has less total elements and nodes of the slab-girder combined structure, little occupation machine time of computation, low computation cost and results more accordant with practical situation, and is an effective method for constructing the slab-girder structure of the train.
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Description

technical field

[0001] The invention belongs to the field of reliability and safety analysis of vehicle structure strength, and in particular relates to a method for constructing a typical plate-girder composite structure model in the vehicle body structure in the finite element analysis and structural optimization design of the railway locomotive vehicle body structure. Background technique

[0002] In recent years, with the continuous development of the railway industry, high speed and heavy load have become one of the important symbols of railway modernization. The increase of train speed and the increase of axle load put forward higher requirements on the safety and reliability of the main bearing parts (wheel sets, frame, car body, etc.) of rolling stock. For the railway transportation sector, the reliability and safety of railway transportation have always been the prerequisites for the development of railway transportation, and the reliability and safety of structural...

Claims

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