%0 Journal Article %T A minimal integrity basis for the elasticity tensor %+ Laboratoire de Mécanique et Technologie (LMT) %+ Institut de Mathématiques de Marseille (I2M) %+ Laboratoire de Modélisation et Simulation Multi Echelle (MSME) %A Olive, Marc %A Kolev, Boris %A Auffray, Nicolas %< avec comité de lecture %@ 0003-9527 %J Archive for Rational Mechanics and Analysis %I Springer Verlag %V 226 %N 1 %P 1-31 %8 2017-10 %D 2017 %Z 1605.09561 %R 10.1007/s00205-017-1127-y %K Elasticity tensor %K Integrity Basis %K Classical Invariant Theory %K Gordan Algorithm %Z MSC 2010: 74E10 (15A72 74B05) %Z Engineering Sciences [physics]/MaterialsJournal articles %X We definitively solve the old problem of finding a minimal integrity basis of polynomial invariants of the fourth-order elasticity tensor C. Decomposing C into its SO(3)-irreducible components we reduce this problem to finding joint invariants of a triplet (a, b, D), where a and b are second-order harmonic tensors, and D is a fourth-order harmonic tensor. Combining theorems of classical invariant theory and formal computations, a minimal integrity basis of 297 polynomial invariants for the elasticity tensor is obtained for the first time. %G English %2 https://hal.science/hal-01323543v2/document %2 https://hal.science/hal-01323543v2/file/OKA16.pdf %L hal-01323543 %U https://hal.science/hal-01323543 %~ CNRS %~ UNIV-AMU %~ ENS-CACHAN %~ EC-MARSEILLE %~ MSME %~ MSME_MECA %~ UPEC %~ LMT %~ I2M %~ I2M-2014- %~ UNIV-PARIS-SACLAY %~ ENS-CACHAN-SACLAY %~ SORBONNE-UNIVERSITE %~ SU-SCIENCES %~ LMT-SACLAY %~ SU-TI %~ FARMAN %~ ENS-PARIS-SACLAY %~ GS-ENGINEERING %~ TEST-ANAIS %~ ALLIANCE-SU %~ UNIV-EIFFEL %~ UPEM-UNIVEIFFEL %~ LMPS