Authors:
Gabriele Milani
1
and
Federico Milani
2
Affiliations:
1
Politecnico di Milano, Italy
;
2
CHEM.CO Consultant, Italy
Keyword(s):
GUI Optimization Software, Natural Rubber (NR) Vulcanization, Kinetic Numerical Model, Experimental Data Fitting.
Related
Ontology
Subjects/Areas/Topics:
Application Domains
;
Case Studies
;
Computer Simulation Techniques
;
Formal Methods
;
Health Engineering and Technology Applications
;
Laboratory Simulation Software
;
Materials
;
Mathematical Simulation
;
Neural Rehabilitation
;
Neurotechnology, Electronics and Informatics
;
Optimization Issues
;
Simulation and Modeling
;
Simulation Tools and Platforms
Abstract:
A graphical user interface software called GURU suitable to fit rheometer curves in Natural Rubber (NR) sulphur vulcanization is proposed. Experimental data are loaded using Excel (experimental output comes from a moving die rheometer registration), normalized and fitted with a numerical model that follows the general scheme proposed by Han. Han’s chemical model translates into mathematics by means of a first order ODE system, admitting a closed form solution for the crosslinking density. Three kinetic constants characterize the model and they must be found in such a way to minimize the absolute error between normalized experimental data and numerical predictions. GURU works to minimize the error by means of a trial and error procedure handled interactively by means of sliders, assigning a value for each kinetic constant and a visual comparison between numerical and experimental curves. An experimental case of technical relevance is shown as benchmark.