An enhanced single Gaussian point continuum finite element formulation using automatic differentiation

arXiv (Cornell University)

Abstract

This dataset contains the source code and the data with an example of uniaxial strain of an enhanced single Gaussian point continuum finite elemnet formulation using automatic differentiation. This contribution presents a low-order 3D finite element formulation with hourglass stabilization using automatic differentiation. Here, the former Q1STc element formulation is enhanced by an approximation-free computation of the inverse of the Jacobian. The improved version is termed "Q1STc+." The corresponding publication is: Pacolli, N., Awad, A., Kehls, J., Sauren, B., Klinkel, S., Reese, S., Holthusen, H.An enhanced single Gaussian point continuum finite elemnet formulation using automatic differentiation. Standalone_Elementroutine: Q1STc+_Codes contains: main.f90: Standalone routine for local uniaxial strain test Makefile: Makefile to create executable "Q1STc+" elem40.f90: Element routine "Q1STc+" with elem_sub.f90 as the subroutine written in AceGen mat52.f90: Elasto-plastic material routine with all subroutines written in AceGen elem_mat_select.f90: The selected material routine (Here: mat52) elem_subs.f90: Subroutines for elem40.f90 mat_subs.f90: Subroutines for mat52.f90

Authors 6

1. Njomza Pacolli Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen

2. Jannick Kehls Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen

3. Bjorn Sauren Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen

4. Sven Klinkel Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen

5. Stefanie Reese Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen

6. Hagen Holthusen Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen