NEW POLYNOMIAL CRITERIA OF STRENGTH FOR MATERIALS OF VARIOUS SOLIDITY
The paper suggests new criteria of strength for materials of various solidity. The criteria were obtained on the basis of power series expansion of exponential dependence between the first tensor invariant and the second deviator invariant of the stress tensor. Strength characteristics, which are included in the criteria, are determined from two simple tests irrespective of the stated terms of series. We also carried out a comparison of the suggested criteria with the similar criteria and experiment results.