Effective elastic properties of periodic irregular open-cell foams

The linear elastic properties of microcellular foams

The mechanical behaviour of a new type of open-cell foam made by a thermally induced phase separation (TIPS) process was investigated. Foams made by the TIPS process are characterized by cell sizes which are 10-100 times smaller than conventional foam materials. In this work, the linear elastic modulus of these foams in dynamic tension/compression was measured. A comparison was made with the th...

Simulation of Thermal Transport in Open-Cell Metal Foams: Effect of Periodic Unit Cell Structure

Microstructure and Elastic Properties of Colloidal Gel Foams.

Colloidal gel foams are composed of a continuous, attractive particle network that surrounds and interconnects dispersed bubbles. Here, we investigate their stability, morphology, and elasticity as a function of foaming intensity, surfactant concentration and hydrophobicity, pH, and colloid volume fraction. Upon optimizing these parameters, highly stable colloidal gel foams are created. Within ...

Elastic properties of highly anisotropic thin poly(propylene) foams

In this letter, elastic properties of highly anisotropic cellular poly(propylene) films are reported. The material shows peculiar elastic properties compared to other foams in the literature. The data is displayed as the relative Young’s modulusE∗/Es versus relative density ρ∗/ρs. Almost all the data from the literature are located on the region E∗/Es = (ρ ∗/ρs) n with 1 ≤ n ≤ 6. The introduced...

Elastic properties of model random three-dimensional open-cell solids

Most cellular solids are random materials, while practically all theoretical structure-property relations are tor periodic models. To generate theoretical results for random models the finite element method ( FEM) was used to study the elastic properties of open-cell solids. We have computed the density ( I J ) and microstructure dependence of the Young's modulus ( E ) and Poisson's ratio ( v )...