felupe 1.0.0

Finite Element Analysis

FElupe - Finite Element Analysis

FElupe is a Python 3.6+ finite element analysis package focussing on the formulation and numerical solution of nonlinear problems in continuum mechanics of solid bodies. Its name is a combination of FE (finite element) and the german word Lupe (magnifying glass) as a synonym for getting a little insight how a finite element analysis code looks like under the hood.

Installation

Install Python, fire up a terminal and run

pip install felupe[all]

where [all] installs all optional dependencies. By default, FElupe does not require numba and sparse. In order to make use of all features of FElupe, it is suggested to install all optional dependencies. After installation, import FElupe as follows in your script.

import felupe as fe

Documentation

The documentation is located here.

Changelog

All notable changes to this project will be documented in this file. The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[Unreleased]

[1.0.0] - 2021-10-19

Added

• Start using a Changelog.
• Added docstrings for essential classes, methods and functions.
• Add array with point locations for all elements.

Changed

• Rename element methods (from basis to function and from basisprime to gradient).
• Make constitutive materials more flexible (allow material parameters to be passed at stress and elasticity evaluation umat.gradient(F, mu=1.0)).
• Rename ndim to dim.
• Simplify element base classes.
• Speed-up calculation of indices (rows, cols) for Fields and Forms (about 10x faster now).
• Update test_element.py according to changes in element methods.

Removed

• Automatic check if the gradient of a region can be calculated based on the dimensions. The grad argument in region(grad=False) has to be enforced by the user.

License

FElupe - finite element analysis (C) 2021 Andreas Dutzler, Graz (Austria).

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see https://www.gnu.org/licenses/.