Developments in nite element simulations of aluminium extrusion

  title={Developments in nite element simulations of aluminium extrusion},
  author={Joeri Lof},
  • Joeri Lof
  • Published 2000
In this paper a new class of integration algorithms for elasto-viscoplastic constitutive equations is proposed. It is based on the generalised trapezoidal rule, which is a weighted combination of the start and end of the increment. But instead of taking constant weights, the weights are a function of the plastic multiplier. In this way the magnitude of the plastic strain increment determines the way the integration is performed. The stress update and consistent tangent are derived for the case… CONTINUE READING

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