Численное моделирование удара пластины полусферическим индентором

Abstract

The problems of numerical modeling of deformations of a circular plate and a package, which consists of two external steel plates and medium titanium one, are considered in three-dimensional setting. The plates are impacted by an indenter with hemispherically shaped working part. The transient coupled thermo- visco- plastic problem is solved in three-dimensional setting, taking into account the friction in the contact areas and the material yield strength, which depends on the strain rates and the temperature. The dynamic contact problems are numerically implemented by the finite element method using the ANSYS software package. The parameters of stress-strain states of the plate and the package are compared for two models of the defining relations: the Cooper-Simond and neural network models. It is demonstrated that the deviations of the obtained values of displacements and deformations intensities do not exceed 15%.