WIAS-SHarP
Surface
Hardening
Program
Quick-Links
Developers, Funding
- Developers
-
Dr. Wolf Weiss,
Timo Streckenbach,
Prof. Dr. Dietmar Hömberg
(Weierstrass Institute for Applied
Analysis and Stochastics (WIAS), Berlin, Germany)
- History and former partners
-
The first version of WIAS-SHarP was developed until the end of 2002 together with Prof. Spies from the Bergakademie Freiberg and funded by the
Stiftung Industrieforschung.
Description
The goal of this software was the development and
implementation of a numerical method to describe the evolution of
temperature and phase volume fractions during laser and electron
beam hardening in workpieces with arbitrary geometry. The results
lead to the development of the software WIAS-SHarP, which
is based on the FE/FV-toolbox pdelib and already successfully used in
industry.
Main issues of the software are
A model to describe the
phase transitions during one complete heat treatment cycle.
The adjustment of model parameters for a big number of
important steels.
Adaptive simulation of laser surface hardening with residual-based error estimator.
Different grids for temperature and phase volume fractions.
The development of control strategies to achieve uniform
hardening depth without melting the workpiece surface for moving heat source.
The development of a java-based user interface.
Optimal control of phase transitions
For work pieces with an arbitrary geometry Laser surface hardening with constant surface temperature leads not to a uniform hardening depth.
Left: Representation of the Workpiece as grid for numerical simulation. Right: Result of simulation for constant surface temperture.
Therefore an optimal surface temperature is calculated with a PID algorithm. The optimal surface temperature can be used as an set point for the real process in industry.
Experimental validation
Left: Computed optimal surface temperature. Right: Experiment with uniform hardening depth.
Software
Features
- Graphical user interface
- Import filter for .poly and .stl (stereo lithography format) files.
- Available for Linux and Windows.
We offer
- Individual consulting
- Joint problem definition and search for solutions
- Customized software development
- Software installation and maintenance
- Joint efforts to extend the software
Documentation
- Manual for a special version (german)
Publications
For Publications see
here
