An Extension of Burzyński Hypothesis of Material Effort Accounting for the Third Invariant of Stress Tensor

Archives of Metallurgy and Materials

M. Nowak¹  P. Szeptyński¹  R. Pęcherski¹ 

[1] The Polish Academy of Sciences, Institute of Fundamental Technological Research, 00-106 Warszawa, 5B Pawi?skiego Str., Poland

关键词: Keywords: Burzyński yield condition;    strength differential effect;    pressure sensitivity;    Lode angle;    third invariant of stress tensor deviator;   

DOI  :  10.2478/v10172-011-0054-4

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

The aim of the paper is to propose an extension of the Burzyński 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.

【 授权许可】

Unknown