|Table of Contents|

Rapid analysis method of weight-reduced orifice plate structure based on stiffness equivalence model(PDF)

《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:
2019年03期
Page:
89-99
Research Field:
载运工具运用工程
Publishing date:

Info

Title:
Rapid analysis method of weight-reduced orifice plate structure based on stiffness equivalence model
Author(s):
NA Jing-xin;  REN Jun-ming;  TAN Wei;  CHEN Li-jun
(State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, Jilin, China)
Keywords:
vehicle engineering;  urban rail passenger coach;  weight-reduced orifice plate structure;  structure lightweight;  finite element analysis;  stiffness equivalence model
PACS:
U270.2
DOI:
-
Abstract:
In order to calculate and analyze the structure of weight-reduced orifice plate more efficiently, a rapid analysis method was proposed. The general stiffness equivalence relationship between weight-reduced orifice plate structure model and planar plate structure model was researched. The relational expressions were established between the aperture, hole distance of weight-reduced orifice plate, the equivalent Young's modulus, and thickness of corresponding planar plate. The orifice plate structure model was replaced with equivalent planar plate structure model for deformation analysis. The local node displacement was applied to corresponding target hole model, and the stress distribution of target hole area was calculated. The accuracy of proposed method was verified by experiments and simulations. The stability of stiffness equivalence relationship was verified by applying different loads to an actual weight-reduced orifice plate structure. The effectiveness of the method in practical engineering was verified by an example of a car body chasis with orifice plate. Analysis result shows that compared with experimental results, the maximum error of deformation of rapid analysis method is about 3%, and the maximum error of strain is about 5%. Under different loads, the deviation of equivalent Young's modulus is about 2.5%, and the deviation of equivalent plate thickness is about 1.3%. The average calculation error of deformation and local stress of rapid analysis method is less than 6.7%, and the calculation time is shortened by about 50%. So, the rapid analysis method can replace the traditional method to analyze the performance of weight-reduced orifice plate structure. 8 tabs, 16 figs, 30 refs.

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Last Update: 2019-06-27