AN EXTENSION OF BURZYNSKI HYPOTHESIS OF MATERIAL EFFORT ACCOUNTING FOR THE THIRD INVARIANT OF STRESS TENSOR

作者：Pecherski R B^*; Szeptynski P; Nowak M

来源：Archives of Metallurgy and Materials, 2011, 56(2): 503-508.

DOI：10.2478/v10172-011-0054-4

• Burzynski yield condition
• strength differential effect
• pressure sensitivity
• Lode angle
• third invariant of stress tensor deviator

The aim of the paper is to propose an extension of the Burzynski hypothesis of material effort to account for the influence of the third invariant of stress tensor deviator. In the proposed formulation the contribution of the density of elastic energy of distortion in material effort is controlled by Lode angle. The resulted yield condition is analyzed and possible applications and comparison with the results known in the literature are discussed.

• 出版日期2011