Abstract
The static compression of porous aluminum specimens, with free vertical surfaces fixed in a cylindrical holder, was investigated both theoretically and experimentally. Calculation were performed using the principle of 3D similarity of the stress-strain state in structural elements of constructions. Such an approach allows one to take into account the nonuniform distribution of stresses and strains caused by pores and to vary the small number of structural elements (representative volumes) in calculations, while retaining the porosity index and the characteristic dimensions of construction. Based on the calculation-experimental method, properties of the carcass material were identified using the results of compression tests of the porous specimens. The numerical results obtained are compared with experimental data, and they testify to the effectiveness of the principle of 3D similarity for this class of problems.
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