Improved estimates for the effective elastic bulk modulus of random tetragonal crystal aggregates

Vuong Thi My Hanh, Pham Duc Chinh, Vu Lam Dong


Particular expressions of upper and lower estimates for the macroscopic elastic bulk modulus of random cell tetragonal polycrystalline materials are derived and computed for a number of practical crystals. The cell-shape-unspecified bounds, based on minimum energy principles and generalized polarization trial fields, appear close to the simple bounds for specific spherical cell polycrystals


Variational bounds; effective elastic bulk modulus; random cell polycrystal; tetragonal crystal

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