XXXIV. Research on combined stress and anisotropy

Abstract

Abstract This paper discusses the effect of departure from isotropism in the specimen on the yield point under various stress combinations, and analyses the experimental results and deductions drawn there from given in papers by Prof. Mason, Dr. Becker, and Prof. G. Cook. For ascertaining the effects of the simple forms of anisotropy which manufacture tends to leave in the product, it is assumed that the primary factor in elastic failure is the maximum shearing stress. The application of these deductions to the researches referred to show that, for close correlation, an effect due to volumetric stress must be included, and that the various unexplained difficulties encountered in these researches are then completely clarified and all the results are shown to be in close agreement with the Guest criterion of elastic failure. The completeness of the explanations of difficulties so diverse is good evidence that it and the assumption are correct, and the effects are shown to be such as to merit careful examina...