2134/36550
Tianyu Chen
Tianyu
Chen
Christopher Harvey
Christopher
Harvey
Simon Wang
Simon
Wang
Vadim Silberschmidt
Vadim
Silberschmidt
Dynamic interfacial fracture of a thin-layered structure
Loughborough University
2019
Dynamic energy release rate
Inertial effect
Modal analysis
Dynamic energy release rate partition
Mechanical Engineering not elsewhere classified
2019-01-11 15:38:18
Journal contribution
https://repository.lboro.ac.uk/articles/journal_contribution/Dynamic_interfacial_fracture_of_a_thin-layered_structure/9224276
To calculate the dynamic energy release rate of a crack is important for understanding a structure’s fracture behavior under transient or varying loads, such as impact and cyclic loads, when the inertial effect can be significant. In this work, a method is proposed to derive an analytic expression for the dynamic energy release rate of a stationary crack under general applied displacement. An asymmetric double cantilever beam with one very thin layer is considered as a special case, with vibration superimposed onto a constant displacement rate applied to the free end. The resulting expression for dynamic energy release rate is verified using the finite-element method (FEM) in conjunction with the virtual crack closure technique. The mode-mixity of the dynamic energy release rate is also calculated. The predicted total dynamic energy release rate and its components, GI and GII, are both in close agreement with results from FEM simulations