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Analysis of Creep in Paperboard Packages With Plastic Tops

Arvidsson, Jakob and Grönvall, Jesper (2004)
Structural Mechanics
Civil Engineering
Abstract
Beverage packages made of paper and plastic materials that are stored for a long time, deform due to creep deformations. The phenomena is termed bulging and means that the package changes its shape. Bulging is a major issue for the producers of beverage packages.

The purpose of this master’s dissertation, is to develop a Finite Element-model for simulation of bulging of beverage packages at varying loadings and time scales that is verified to experimentally determined data of creep.

In order to formulate a suitable FE-model for simulation of creep, a profound knowledge of the material behavior of the various materials in a beverage package is required. Therefore, creep tests of paper, polymer, and aluminum foil were performed. The... (More)
Beverage packages made of paper and plastic materials that are stored for a long time, deform due to creep deformations. The phenomena is termed bulging and means that the package changes its shape. Bulging is a major issue for the producers of beverage packages.

The purpose of this master’s dissertation, is to develop a Finite Element-model for simulation of bulging of beverage packages at varying loadings and time scales that is verified to experimentally determined data of creep.

In order to formulate a suitable FE-model for simulation of creep, a profound knowledge of the material behavior of the various materials in a beverage package is required. Therefore, creep tests of paper, polymer, and aluminum foil were performed. The creep deformation of paper was found to be approximately four to six times larger in CD than in MD. The elastic + creep deformation of the laminate is approximately three times
larger in CD in comparison to MD.

A creep material model for each of the materials in the laminate was calibrated to experimental data. The creep behavior of the FE-model was compared to bulge tests, which described the deflection of the package. The FE-model was proven to produce accurate results for shorter time periods and acceptable results for longer time frames.

As experimental creep tests require long time frames, it is important to anticipate the creep behavior with a mathematical model. The FE-method was shown to be an excellent tool in order to describe, understand, and predict the phenomena of creep. (Less)
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author
Arvidsson, Jakob and Grönvall, Jesper
supervisor
organization
year
type
H3 - Professional qualifications (4 Years - )
subject
keywords
Creep, beverage package, paper properties, FEM, ABAQUS, Power-law, crease
report number
TVSM-5128
ISSN
0281-6679
language
English
id
3566748
date added to LUP
2013-08-05 15:11:28
date last changed
2013-10-01 17:01:28
@misc{3566748,
  abstract     = {Beverage packages made of paper and plastic materials that are stored for a long time, deform due to creep deformations. The phenomena is termed bulging and means that the package changes its shape. Bulging is a major issue for the producers of beverage packages.

The purpose of this master’s dissertation, is to develop a Finite Element-model for simulation of bulging of beverage packages at varying loadings and time scales that is verified to experimentally determined data of creep.

In order to formulate a suitable FE-model for simulation of creep, a profound knowledge of the material behavior of the various materials in a beverage package is required. Therefore, creep tests of paper, polymer, and aluminum foil were performed. The creep deformation of paper was found to be approximately four to six times larger in CD than in MD. The elastic + creep deformation of the laminate is approximately three times
larger in CD in comparison to MD.

A creep material model for each of the materials in the laminate was calibrated to experimental data. The creep behavior of the FE-model was compared to bulge tests, which described the deflection of the package. The FE-model was proven to produce accurate results for shorter time periods and acceptable results for longer time frames.

As experimental creep tests require long time frames, it is important to anticipate the creep behavior with a mathematical model. The FE-method was shown to be an excellent tool in order to describe, understand, and predict the phenomena of creep.},
  author       = {Arvidsson, Jakob and Grönvall, Jesper},
  issn         = {0281-6679},
  keyword      = {Creep,beverage package,paper properties,FEM,ABAQUS,Power-law,crease},
  language     = {eng},
  note         = {Student Paper},
  title        = {Analysis of Creep in Paperboard Packages With Plastic Tops},
  year         = {2004},
}