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High-speed bullet train side window model boundary displacement calculation method and bonding strength calculation method based on RS mapping

A technology for high-speed trains and calculation methods, which is applied in the directions of calculation, design optimization/simulation, and instrumentation. Efficient effect

Inactive Publication Date: 2017-05-31
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the relatively small size of the adhesive, the unit size of the overall finite element model is small and the number of units is huge, so the requirements for computer hardware equipment are relatively high, and the calculation efficiency is low, especially when designing the structural size of the side window adhesive. Repeated revisions followed by revisions to the overall FE model waste a lot of modeling and analysis time
[0003] Patent 201610363318.5 discloses a triangular area-based interpolation method, which directly loads the displacement obtained by local model interpolation onto the adhesive unit. Its main disadvantage is that the interpolation accuracy of the triangular interpolation method is relatively low, and there will be stress concentration when the displacement is directly loaded on the adhesive unit.

Method used

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  • High-speed bullet train side window model boundary displacement calculation method and bonding strength calculation method based on RS mapping
  • High-speed bullet train side window model boundary displacement calculation method and bonding strength calculation method based on RS mapping
  • High-speed bullet train side window model boundary displacement calculation method and bonding strength calculation method based on RS mapping

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Embodiment 1

[0048] The invention provides a method for calculating the bonding strength of the side window of a high-speed train based on RS mapping, and the specific steps are as follows:

[0049] Step 1: Establish the overall model of the car body and side windows with a larger unit size, wherein the side window model is parallel to the XY plane, divide the grid in the overall model, select the coordinate origin of the model on the ground, and the midpoint of the front and rear positions , and is located on the left-right symmetrical axis of the train;

[0050] Step 2: Carry out strength analysis under each working condition of the train, and measure the displacement of the specified point in the overall model; assume that the translational displacement and rotational displacement of the specified point A in the three directions of XYZ are D XA 、D YA 、D ZA , R XA , R YA , R ZA , similarly, the translational displacement and rotational displacement of the specified points B, C, and ...

Embodiment 2

[0079] The invention provides a method for calculating the bonding strength of the side window of a high-speed train based on RS mapping, and the specific steps are as follows:

[0080] Step 1: Establish the overall finite element model of the car body and side windows with a larger element size, where the side window model is parallel to the XY plane, the car body, window frame and glass use quadrilateral shell elements, and the adhesive uses hexahedron elements. The coordinate origin is located on the ground, the midpoint of the front and rear positions, and is located on the symmetrical axis of the motor vehicle;

[0081] Step 2: Perform strength analysis under each working condition of the train to obtain the displacement of the unit nodes of the overall finite element model; assume that the translational displacement and rotational displacement of node A in the three directions of XYZ are D XA 、D YA 、D ZA , R XA , R YA , R ZA , similarly, the translational and rotati...

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Abstract

Provided is a high-speed bullet train side window model boundary displacement calculation method based on RS mapping. The method comprises the steps that an overall model of a high-speed bullet train body and a side window structure is built, a local model of a side window is built, displacement and coordinates of all nodes in the overall model under various working conditions are obtained, and displacement interpolation parameter calculation is conducted on all nodes on the boundary of the local model; displacement of all the nodes on the boundary of the local model is obtained according to the displacement interpolation parameters and displacement of a specified node, displacement of the node is loaded to the local model of the side window, the bonding strength of the side window is analyzed, and stress and deformation of a side window adhesive are obtained. The invention provides a high-speed bullet train side window bonding strength calculation method.

Description

technical field [0001] The invention relates to the field of bonding strength analysis of side windows of high-speed trains, in particular to a method for calculating the boundary displacement of a side window model of high-speed trains based on RS mapping and a calculation method for the bonding strength thereof. Background technique [0002] The bonding strength of the side windows of high-speed trains directly affects the safety and comfort of passengers. During the running of the train, the side window adhesive is not only subjected to the pressure or tension caused by gravity, the pressure difference between the inside and outside of the side window, but also the deformation of the car body. Impact. The traditional calculation method is to establish an overall finite element model of the car body and side windows, and analyze the strength of the adhesive under various working conditions of the train. Due to the relatively small size of the adhesive, the unit size of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/23
Inventor 那景新秦国锋范以撒谭伟慕文龙刘浩垒纪俊栋杨佳宙浦磊鑫任俊铭
Owner JILIN UNIV
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