Abstract
Because of the complexity and irregularity of the internal structure of aluminum foam, it is difficult to establish a three-dimensional model that can accurately reflect this structure. In this study, an algorithm, named spherical core stratification algorithm, for three-dimensional modeling of spherical aluminum foam was proposed, and by using this algorithm, a three-dimensional model for sphere aluminum foam with random pores has been successfully constructed. The constructed model not only has a high similarity with the real structure of spherical open cell aluminum foam, but also can match its pore size and thickness by adjusting the size and number of holes in the random pore. In order to verify the feasibility of the modeling method, firstly, the three-dimensional model of the cylindrical spherical aluminum foam with a size of ∅35 mm × 20 mm and pore diameter of 5 mm has been generated by using the new algorithm. Secondly, taking the influence of relative density and shape function on the compressive properties of spherical open cell aluminum foams into consideration, a quasi-static constitutive model suitable for the material has been established based on the Sherwood-Frost classical compression constitutive model, which provides material parameters for quasi-static compression simulation. The comparison results show that the established constitutive equation has a good fit with the experiment, with a fitting correlation coefficient of above 0.99. Finally, the quasi-static compression simulation was carried out by ABAQUS, and the simulated nominal stress-strain curve was obtained. The simulation results indicate that the simulated stress-strain curve had the same trend with the one obtained by the quasi-static compression experiment with a small deviation.
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Wei Zhang Male, Master’s degree. His research mainly focuses on the mechanical properties of aluminum foam and aluminum foam-polyurethane composites.
This work was financially supported by the Natural Science Foundations of Shanxi Province, China (Grant No. 201601D102035).
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Qi, Ms., Zhang, W., Wang, Jy. et al. A three dimensional modeling method for spherical open cell aluminum foams based on spherical core stratification algorithm. China Foundry 16, 248–255 (2019). https://doi.org/10.1007/s41230-019-8139-1
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DOI: https://doi.org/10.1007/s41230-019-8139-1