Necking of an Elastoplastic Metal Bar
Application ID: 12607
A circular metal bar is subjected to uniaxial tension. As an effect, large plastic strains develop. The material is elastoplastic with nonlinear isotropic hardening. As the elongation is increased, the decrease in radius becomes strongly nonuniform, so called "necking". The development of the necking is studied, and the computed change in radius is in good agreement with results found in other literature. This example is a classical benchmark for large-strain plasticity.
This model example illustrates applications of this type that would nominally be built using the following products:
however, additional products may be required to completely define and model it. Furthermore, this example may also be defined and modeled using components from the following product combinations:
- COMSOL Multiphysics® и
- либо Модуль «Геомеханика», или Модуль «Нелинейные материалы» и
- либо Модуль «MEMS», или Модуль «Механика конструкций»
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