Crack nucleation and growth as strain localization in a virtual-bond continuum

摘要: Abstract We have recently proposed a virtual internal bond (VIB) model with cohesive interactions between material particles as an alternative approach to modeling fracture. This differs from atomistic methods in that phenomenological “cohesive force law” is assumed act “material particles” which are not necessarily atoms; it also surface” models that, rather than imposing law along prescribed set of discrete surfaces, network bonds statistically incorporated into the constitutive via Cauchy–Born rule, i.e. by equating strain energy density on continuum level potential stored due imposed deformation. With this approach, crack initiation and growth occur spontaneously when classical condition for loss ellipticity elastic governing equations satisfied. demonstrate application VIB failure detection, dynamic propagation, fracture toughening combined constrained plasticity multilayered structure.