Expert Introduction

Expert in solid mechanics, professor at Zhejiang University. In 2003, he was elected as an academician of the Chinese Academy of Sciences. He used to be the president of Zhejiang University and the director of the National Natural Science Foundation of China. He is engaged in the research of fracture mechanics, micromechanics and nanomechanics, and electromechanical coupling failure. In the study of fracture mechanics, he proposed a quasi three-dimension theory for the elastic crack-tip fields, proved that the speed of the crack extension can exceed the Rayleigh wave speed, and stimulated the study of ultra-high-speed interface fracture. In micro/nanomechanics research, he proposed the theory of mesoplasticity. By the atomistic/continuum overlapping method, he simulated the dynamic process of dislocation emission from a crack tip. The method serves as an earlier example for multi-scale simulation from continuum to mesoscopic and to atomistic scale. He proposed the theory of quasi-cleavage fracture and explained the phenomenon of crack blunting followed by cleavage. He proposed a number of models for electric fracture, electric field induced fatigue cracking and toughening by domain-switch, calculated the crack extension of the electric field cycle, and elucidated the mechanisms related to mass flow instability under electric fields.

Expert Viewpoints

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