科研之友
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摘要
Several recent papers that describe an approach to developing a theory of brittle fracture incorporating crack-surface elasticity have asserted that such models predict bounded stresses and strains at crack-tips in two dimensions. It is proved in this short note that the assertion is incorrect. While incorporating surface elasticity into fracture models in the setting of the linearized theory of elasticity does remove the square-root stress/strain singularity at crack-tips seen in classical theories that do not take account of crack-surface interfacial effects, it does not predict bounded stresses and strains but rather diminishes the singularity to being logarithmic.
- 出版日期2012-9
