Buckling criteria for vacuum bottle based on finite element analysis

K. Natori, T. Kobayashi, S. Tatsuta, T. Tanaka, Y. Arao

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

A bottle with a vacuum insulation structure is generally called a thermos bottle. It has a dual structure with inner and outer cylinders and a vacuum layer between them. The bottle with the structure maintains the heat and cold. It has been found useful for many years as a container that carries drinking water. Recently, the lightweight design of a vacuum bottle has been required to meet consumer demand. However, the bottle's wall collapses during the process of drawing a vacuum if the stiffness of the cylinder is not enough. To construct the design guide that can prevent the collapse of a double-structured bottle induced by the pressure difference, a numerical simulation was performed. The critical thickness tc, which is the thickness of the bottle when the bottle starts to deform under 1 atm, was defined. tc depends on the length and diameter of the bottle. The index to determine tc from the length and diameter of the bottle was suggested. To evaluate the validity of the analysis, vacuum bottles were prepared and experiments were conducted. The index we suggested showed good agreement with the experimental results. The shift of index within the increase of Young's modulus can be formulated.

Original languageEnglish
Title of host publicationComputational Methods and Experimental Measurements XVI
EditorsGiovanni M. Carlomagno, Carlos A. Brebbia, Santiago Hernandez
PublisherWITPress
Pages339-349
Number of pages11
ISBN (Electronic)9781845647322
ISBN (Print)9781845647322
DOIs
Publication statusPublished - 2013
Externally publishedYes
Event16th International Conference on Computational Methods and Experimental Measurements, CMEM 2013 - A Coruna, Spain
Duration: 2013 Jul 22013 Jul 4

Publication series

NameWIT Transactions on Modelling and Simulation
Volume55
ISSN (Print)1743-355X

Conference

Conference16th International Conference on Computational Methods and Experimental Measurements, CMEM 2013
CountrySpain
CityA Coruna
Period13/7/213/7/4

Keywords

  • Buckling
  • Finite element method
  • Light weight design
  • Vacuum bottle

ASJC Scopus subject areas

  • Modelling and Simulation
  • Computational Mathematics

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