A Numerical Simulation of Effects of Softening and Heterogeneity on the Stress Intensity Factor of Quasi-Brittle Material | Zendy

Chen Tielin | Zendy; Li Chao | Zendy; Zhang Dingli | Zendy

Open Access

A Numerical Simulation of Effects of Softening and Heterogeneity on the Stress Intensity Factor of Quasi-Brittle Material

Author(s) -

Chen Tielin,

Li Chao,

Zhang Dingli

Publication year - 2014

Publication title -

advances in mechanical engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.318

H-Index - 40

ISSN - 1687-8132

DOI - 10.1155/2014/586472

Subject(s) - softening , brittleness , materials science , stress intensity factor , nonlinear system , ultimate tensile strength , intensity (physics) , composite material , fracture (geology) , fracture mechanics , stress (linguistics) , structural engineering , mechanics , engineering , physics , quantum mechanics , linguistics , philosophy

A numerical approach to simulate the crack initiation and propagation process of the nonlinear fracture behavior of the quasi-brittle materials under tensile loading is presented. The nonlinear fracture of Mode I of quasi-brittle material is analyzed by considering the effects of microscopic softening rate and heterogeneity. The results show that the softening rate and the heterogeneity of quasi-brittle material affect the values of stress intensity factor K I . The softening index affects merely the size of the plastic zones while the heterogeneity causes the more sophisticated response of quasi-brittle materials.

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