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Parameter identification of transport PDE/nonlinear ODE cascade model for polymer extrusion with varying die gap
Author(s) -
Toukhtarian Raffi,
Darabi Mostafa,
Hatzikiriakos Savvas,
Atsbha Haile,
Boulet Benoit
Publication year - 2021
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.23910
Subject(s) - die swell , extrusion , cascade , nonlinear system , ode , finite element method , die (integrated circuit) , materials science , mechanics , computer science , mechanical engineering , mathematics , engineering , composite material , structural engineering , physics , quantum mechanics , chemical engineering
A new transport PDE/nonlinear ODE cascade model is proposed to simulate extrudate thickness for polymer extrusion with varying die gap. The model is developed to simulate extrusion in extrusion blow moulding. A finite element method simulator is used as a reference for the proposed model to replicate its time dependent extrudate thickness profile. The parameters of the proposed model are identified by minimizing the response error between the proposed model and the finite element method simulator due to step inputs. The novel model is computationally cheap, suitable for controller design, and effective in simulating the extrudate thickness.