Loading...
Loading...

Go to the content (press return)

Numerical differentiation for local and global tangent operators in computational plasticity

Author
Pérez-Foguet, A.; Rodriguez-Ferran, A.; Huerta, A.
Type of activity
Report
Date
1998-09
Code
CIMNE - PI 144
Repository
http://hdl.handle.net/2117/25606 Open in new window
Abstract
In this paper, numerical differentiation is applied to integrate plastic constitutive laws and to compute the corresponding consistent tangent operators. The deriva- tivesoftheconstitutive equationsareapproximatedbymeansofdifferenceschemes. These derivatives are needed to achieve quadratic convergence in the integration at Gauss-point level and in the solution of the boundary value problem. Numerical differentiation is shown to be a simple, robust and competitive alternative to an- alytical deri...
Citation
Pérez-Foguet, A.; Rodriguez, A.; Huerta, A. "Numerical differentiation for local and global tangent operators in computational plasticity". 1998.
Keywords
consistent tangent operators, difference schemes, finite element method, numerical differentiation, quadratic convergence
Group of research
EScGD - Engineering Sciences and Global Development
LACÀN - Numerical Methods for Applied Sciences and Engineering

Participants

Attachments