期刊
INTERNATIONAL JOURNAL OF APPLIED MECHANICS
卷 8, 期 5, 页码 -出版社
IMPERIAL COLLEGE PRESS
DOI: 10.1142/S1758825116500629
关键词
Packaging air cushion; polymer membrane; constitutive model; viscohyperelasticity
类别
资金
- National Natural Science Foundation of China [11172171, 51378495]
- Ph.D. Programs Foundation of Ministry of Education of China [20130073110054]
Air cushion is an important packaging material with admirable cushion property in protecting articles from damage. Polymer membrane in air cushion renders a highly nonlinear elastic and rate dependent mechanical behavior in experimental tensile test. A visco-hyperelastic constitutive model for a polymer membrane of an air cushion is developed by additively decomposing its mechanical response into a hyperelastic portion and a viscoelastic portion. Material parameters are consecutively obtained by matching experimental data of static and dynamic uni-axial tensile tests of the membrane, respectively. Compression test of a single air column of the air cushion is conducted as a means of validation on the proposed constitutive model. By comparing simulation results with experimental data, it is shown that the proposed visco-hyperelastic model can properly characterize the mechanical behavior of the air cushion packaging material. The model can be applied to evaluate cushion performance of air cushions and their optimum design.
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