engleski

Multiscale Numerical Modeling of Regular Open-Cell Cellular Structures wiht Elastic Filler Material

Open-cell cellular materials with their high energy absorption performances are of particular importance in automotive, railway, ship and aerospace industry as crash absorbers where the impact energy is absorbed and dissipated. In our recent research the benefit of using second phase filler material, resulting in energy absorption increase, is addressed. Modeling of open-cell structures on the macroscale (the scale of product) is hardly achievable with current computational power, due to complex material behavior of the two phase material. However, the global mechanical and thermal properties of these structures can be evaluated accurately and efficiently by means of a computational homogenization procedure. In the presented research a nonlinear homogenization method is applied for modeling the open-cell structure including the filler material on the mesoscale and applying the homogenized model on the macroscale.

homogenization; plasticity; open cell cellular structures

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