Numerical modeling of the effect of heat and mass transfer in porous low-temperature heat insulation in composite material structures on the magnitude of stresses which develop

G. V. Kuznetsov, N. V. Rudzinskaya

Research output: Contribution to journalArticle

Abstract

The stressed state of multilayer low-temperature heat insulation for a cryogenic fuel tank is considered. Account is taken of heat and mass transfer in foam plastic (the main heat insulation material) occurring at cryogenic temperatures. A method is developed for solving a set of differential equations and boundary conditions. Numerical studies of the main features of these processes are performed. It is established that below 200 K the stresses which arise in foam plastic markedly exceed the ultimate strength for this material. Stresses develop as a result of both a reduction in temperature and a drop in pressure in the foam plastic pores connected with material cooling. On the basis of the results obtained it is established that the combination of thermophysical processes which occur in foam plastic during cooling to cryogenic temperatures leads to changes in the stress-strained state of structure, which should be considered in planning aerospace technology.

Original languageEnglish
Pages (from-to)275-281
Number of pages7
JournalMechanics of Composite Materials
Volume33
Issue number3
Publication statusPublished - May 1997

Fingerprint

Foamed plastics
Heat and Mass Transfer
Thermal insulation
Foam
Numerical Modeling
Composite Materials
foams
insulation
mass transfer
Plastics
plastics
Mass transfer
Heat
heat transfer
Cryogenics
Heat transfer
heat
composite materials
Composite materials
cryogenic temperature

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering

Cite this

@article{d8c3952e280b4970ab3b9bf50ac968fb,
title = "Numerical modeling of the effect of heat and mass transfer in porous low-temperature heat insulation in composite material structures on the magnitude of stresses which develop",
abstract = "The stressed state of multilayer low-temperature heat insulation for a cryogenic fuel tank is considered. Account is taken of heat and mass transfer in foam plastic (the main heat insulation material) occurring at cryogenic temperatures. A method is developed for solving a set of differential equations and boundary conditions. Numerical studies of the main features of these processes are performed. It is established that below 200 K the stresses which arise in foam plastic markedly exceed the ultimate strength for this material. Stresses develop as a result of both a reduction in temperature and a drop in pressure in the foam plastic pores connected with material cooling. On the basis of the results obtained it is established that the combination of thermophysical processes which occur in foam plastic during cooling to cryogenic temperatures leads to changes in the stress-strained state of structure, which should be considered in planning aerospace technology.",
author = "Kuznetsov, {G. V.} and Rudzinskaya, {N. V.}",
year = "1997",
month = "5",
language = "English",
volume = "33",
pages = "275--281",
journal = "Mechanics of Composite Materials",
issn = "0191-5665",
publisher = "Springer New York",
number = "3",

}

TY - JOUR

T1 - Numerical modeling of the effect of heat and mass transfer in porous low-temperature heat insulation in composite material structures on the magnitude of stresses which develop

AU - Kuznetsov, G. V.

AU - Rudzinskaya, N. V.

PY - 1997/5

Y1 - 1997/5

N2 - The stressed state of multilayer low-temperature heat insulation for a cryogenic fuel tank is considered. Account is taken of heat and mass transfer in foam plastic (the main heat insulation material) occurring at cryogenic temperatures. A method is developed for solving a set of differential equations and boundary conditions. Numerical studies of the main features of these processes are performed. It is established that below 200 K the stresses which arise in foam plastic markedly exceed the ultimate strength for this material. Stresses develop as a result of both a reduction in temperature and a drop in pressure in the foam plastic pores connected with material cooling. On the basis of the results obtained it is established that the combination of thermophysical processes which occur in foam plastic during cooling to cryogenic temperatures leads to changes in the stress-strained state of structure, which should be considered in planning aerospace technology.

AB - The stressed state of multilayer low-temperature heat insulation for a cryogenic fuel tank is considered. Account is taken of heat and mass transfer in foam plastic (the main heat insulation material) occurring at cryogenic temperatures. A method is developed for solving a set of differential equations and boundary conditions. Numerical studies of the main features of these processes are performed. It is established that below 200 K the stresses which arise in foam plastic markedly exceed the ultimate strength for this material. Stresses develop as a result of both a reduction in temperature and a drop in pressure in the foam plastic pores connected with material cooling. On the basis of the results obtained it is established that the combination of thermophysical processes which occur in foam plastic during cooling to cryogenic temperatures leads to changes in the stress-strained state of structure, which should be considered in planning aerospace technology.

UR - http://www.scopus.com/inward/record.url?scp=0038875402&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0038875402&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0038875402

VL - 33

SP - 275

EP - 281

JO - Mechanics of Composite Materials

JF - Mechanics of Composite Materials

SN - 0191-5665

IS - 3

ER -