Rack rail bullet train floor lightweight design method on basis of bionic design

A lightweight design and flooring technology, applied in the field of rail transit, can solve problems such as the inability to provide a variety of optimized structural options, and achieve high vibration resistance, reduce time-consuming, and optimize size.

Active Publication Date: 2021-09-07
SICHUAN UNIV
View PDF16 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the existing research optimizes the floor and extracts only one opt

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Rack rail bullet train floor lightweight design method on basis of bionic design
  • Rack rail bullet train floor lightweight design method on basis of bionic design
  • Rack rail bullet train floor lightweight design method on basis of bionic design

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0037] Embodiment:

[0038] Lightweight design method for binding bionic-oriented toiletile train flooring, such as figure 2As shown, including the following steps: Analyze the loading of the floor, select the extreme working condition as the boundary condition of topology optimization. Define the design area and non-design area of ​​the floor topology optimization. Setting the topology optimization for the minimum strain energy and the first order, the inherent frequency is maximum, and the mass fraction of the design area is added in the longitudinal extrusion manufacturing constraint. After completing the parameter setting, topology optimization is performed to obtain topology. Several bionic floor structures are obtained based on the topographic design. The size parameters of each of the bionic floor structures are analyzed to analyze the sensitivity of each size to the floor quality, maximum equivalent stress, maximum vertical displacement, and first-order slice, and set the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a rack rail bullet train floor lightweight design method on the basis of bionic design. The method comprises the following steps of: analyzing a loaded working condition of a floor, and selecting an extreme boundary condition; defining a design area; setting a topological optimization target to be the realization of minimum strain energy and maximum first-order vertical bending inherent frequency; calculating to obtain a topological configuration; performing bionic design according to the topological configuration to obtain a plurality of bionic floor structures; parameterizing the size of each bionic floor structure, analyzing the sensitivity of each size to floor key indexes, setting a plurality of size parameters with the highest sensitivity as optimization variables, and constructing a response surface; setting a size optimization target to be the realization of minimum mass, minimum maximum equivalent stress, minimum maximum vertical displacement and maximum first-order vertical bending inherent frequency, and performing multi-target response surface size optimization to obtain floor optimized structures; and analyzing and screening the floor optimized structures. On the basis that the comprehensive performance of the floor is improved, various optimized structure schemes can be provided.

Description

technical field [0001] The invention relates to the technical field of rail transit, and more specifically, to a lightweight design method for a floor of a cog rail train combined with bionic design. Background technique [0002] With the rapid development of the world's rail transit equipment and the integrated development of the transportation and tourism industries, vigorously developing the cog rail transit project meets the current major application needs of the country, and the lightweight of the cog rail vehicle body is the key to realizing the relatively One of the key factors for characteristics such as strong gradeability and comfort. Rack rail vehicle is a type of train used in mountainous scenic spots for sightseeing or transportation of auxiliary equipment in coal mines. The difference between its structure and traditional trains is that the bogie of the locomotive is equipped with a gear device. track engagement. Overseas, cog rail train technology has been w...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06F30/15G06F30/23
CPCG06F30/15G06F30/23
Inventor 尹湘云陈瑞文殷勤殷国富
Owner SICHUAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap