Simulation of progressive fracturing under dynamic loading conditions.

*(English)*Zbl 0878.73055The aim is to explore an economical computational modelling of progressive fracturing under transient dynamic loading, including conditions for a full separation. The model considers a material where microcracking is initiated according to a multiaxial failure criterion. The progressive microcracking is further influenced by the strain softening process. The occurrence of strain softening leads to localization of deformation, with the coalescence of microcracks into macrocracks, and finally to the formation of fully opened cracks.

The behaviour of the material is described using the theory of plasticity or viscoplasticity. A finite element removal technique is applied to modelling of the final separation in the material, and two important numerical examples are considered.

The behaviour of the material is described using the theory of plasticity or viscoplasticity. A finite element removal technique is applied to modelling of the final separation in the material, and two important numerical examples are considered.

Reviewer: O.Simionescu (Bucureşti)

##### MSC:

74R99 | Fracture and damage |

74S30 | Other numerical methods in solid mechanics (MSC2010) |

74S05 | Finite element methods applied to problems in solid mechanics |

##### Keywords:

full separation; microcracking; multiaxial failure criterion; strain softening; localization of deformation; coalescence of microcracks; viscoplasticity
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\textit{Z. Ren} and \textit{N. Bićanić}, Commun. Numer. Methods Eng. 13, No. 2, 127--138 (1997; Zbl 0878.73055)

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