Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2004-04-07
Physics
Condensed Matter
Soft Condensed Matter
7 figures and 2 tables
Scientific paper
The Young's modulus of a two-dimensional truss-like structure is simulated by using the finite element method. A power-law expression is proposed for the effective Young's modulus of the system. The obtained numerical results are compared with the experimental data of the {\em anisotropic thin cellular polypropylene films}. At high solid volume fractions ($>0.4$), the average shape of the cells are lateral, and their dimensions have around one-to-five ratio. As the samples are inflated further, volume fraction of the solid is decreased, the average shape approach a diamond-like structure with one-to-two ratio. In addition the effective Young's modulus of the system increases. It is concluded that valuable structural information can be obtained by analyzing the experimental data and the numerical simulations, which take into account the material's micro-structural information, simultaneously.
Tuncer Enis
Wegener Michael
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