A Yield Criterion for Pressure-Sensitive Materials

Abstract:

Following the modified Gurson model in meso-mechanics, the models with spherical holes are established by the assumption which the matrix meets the two-parameter elliptic yield condition. The macroscopic stress expression which contains micro structure parameters and the material equation of yield surface are given by the upper bound theorem of plastic limit analysis. The parameters of the matrix material and damage(porosity) which impact on macroscopic yield surface equation are discussed. These works provide theory foundations for material damage and design.

• Periodical: Applied Mechanics and Materials (Volumes 117-119)
• Pages: 493-497
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.117-119.493
• Online since: October 2011
• Authors: Chen Hua Lu, Bo Liu, Jian Bing Sang, Yan Hui Qie, Jing Yuan Wang
• Keywords: Meso-Mechanics, Pressure Sensitivity Material, Yield Surface

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