Re: GNU Octave packages for pre- and postprocessing of general 3D flexible bodies for MBDyn

Dear GNU Octave developers,

I would like to ask you, if those contributions will be considered for 
Octave Forge.

Best regards,

Reinhard

On 28.06.20 20:49, Reinhard wrote:
> Dear GNU Octave developers,
>
> I have written four packages for GNU Octave, which can be used for 
> pre- and post processing of general three dimensional flexible bodies 
> for the multibody dynamics software MBDyn (https://www.mbdyn.org/). 
> Especially modal element data can be generated easily and efficient, 
> based on material properties, boundary conditions and geometrical 
> data. It is also possible to perform pre- and post processing of 
> elastohydrodynamic lubricated journal- and slider-plain bearings, 
> including flexible body data generation for bearing journal- and 
> shell-elasticity.
>
> I would like to contribute those packages to Octave Forge as external 
> ones.
>
> Below you can find links to HTML function references, benchmarks and 
> to the GitHub repositories.
>
> HTML function references:
> https://drive.google.com/drive/folders/1AGk3Lv1iDyUuoDZWHLG-3PU_8lruBmBX?usp=sharing
>
> Benchmark problems which have been solved with MBDyn by using those 
> packages:
> - Nonlinear dynamics of a BMW I4 crankshaft from eOSSP 
> (www.evolution-fea.com) <http://www.evolution-fea.com>
> - Elastohydrodynamic diaphragm journal plain bearing from Norman Owen 
> Freund 1995 (https://ro.uow.edu.au/theses/1568/)
> - Elastohydrodynamic contact problem with flexible journal- and 
> shell-surface
> - Transient rotor dynamics problem
> https://drive.google.com/drive/folders/1gzyK4o9cvQbBgDui_c072qHA7K-QmLtf?usp=sharing
>
> Package repositories:
>
> Structural finite element package for linear statics and dynamics:
> https://github.com/octave-user/mboct-fem-pkg
> With this package you can generate meshes, assign material properties, 
> loads, boundary conditions and impose linear constraints, assemble 
> finite element matrices and vectors, solve linear static and 
> eigenvalue problems, compute deformations and stresses, build and 
> export reduced order models, import and export meshes and results.
>
> Interface between GNU Octave and MBDyn:
> https://github.com/octave-user/mboct-mbdyn-pkg
> With this package you can generate MBDyn input files for curved beam 
> structures and modal elements. You can also load output files and post 
> process results. Especially hydrodynamic plain bearing data, which is 
> quite complex, can be handled easily.
>
> Interface between GNU Octave and numerical solvers (PaStiX, MUMPS, 
> Umfpack, ARPACK, METIS and LAPACK):
> https://github.com/octave-user/mboct-numerical-pkg
> This package provides interfaces to several sparse solvers, which can 
> be used to solve large scale general symmetric linear systems of 
> equations and generalized symmetric eigenvalue problems. Usually those 
> solvers are more efficient regarding CPU time and memory consumption 
> than Octave's builtin chol, lu and eigs.
>
> General purpose utility package which is used by the other packages 
> mainly for starting processes like MBDyn , Gmsh and Ghostscript.
> https://github.com/octave-user/mboct-octave-pkg
> With this package you can start external processes and distribute 
> function executions to multiple Octave processes.
>
> I hope, that you can host those packages at Octave Forge.
>
> Best regards,
> Reinhard
>
>