NEWEX kick-off meeting 27 th January, 2017 Antnio Gaspar-Cunha - - PDF document
16-02-2017 NEWEX kick-off meeting 27 th January, 2017 Antnio Gaspar-Cunha Institute of Polymers and Composites, Department of Polymer Engineering, University of Minho Guimares, Portugal Location Department of Polymer Engineering NEWEX
Department of Polymer Engineering University of Minho
Department of Polymer Engineering University of Minho
Department of Polymer Engineering University of Minho
Department of Polymer Engineering University of Minho
Department of Polymer Engineering University of Minho
Department of Polymer Engineering University of Minho
Department of Polymer Engineering University of Minho
Department of Polymer Engineering University of Minho
i) iv) v) iii) ii) vi) Transversal cuts Hopper Solids conveying Delay Melting Pumping Die Heating bands
i) Solids conveying in the hopper– conveying due to gravity; ii) Solids conveying in the screw – conveying due to friction; iii) Delay –conveying of solids (partially) surrounded by a melt film; iv) Melting – accordingly with a specific melting mechanism; v) Pumping; vi) Melt flow trough the die.
Department of Polymer Engineering University of Minho
Barrel Screw Flight Flight qb q s qf qf
y x
Δz H W
Solids conveying
H
T(y)
T
b
Ts
A
Vb
C
Delay (1)
T(y) B Vsz
Tb Ts A Vb WB
D E
Delay (2)
x T(y)
Tb Ts
A D
Vb WB
Melting
H
T(y)
Tb Ts V
b
Melt conveying
C B E D
WB H H
C B
Vb Melting
Department of Polymer Engineering University of Minho
Barrel Screw Flight Flight qb qs qf qf y x W
Solids conveying
H T(y) Tb Ts A Vb C
Delay (1)
T(y) B Vbx Tb Ts A Vb D E
Delay (2)
H b V
Solids conveying (Barrier)
H x T(y) Tb Ts A G H T(y) Tb Ts A b B W B F V
Delay (2) (Barrier)
H T(y) Tb T b Vb B
Melt conveying (Barrier)
H T(y) T b Tb V b
Melt conveying
H T(y) Tb T s D A V b
Melting (Barrier)
G H T(y) T b T s A b V
Delay (1) (Barrier)
H C B H D C B E E D B G B E F C C G F C D Vb Melting
Department of Polymer Engineering University of Minho
Delay
Melting
Pumping
Die
Geometry Polymer proprieties Processing conditions
Output Power consumption Melt temperature Temperature homogeneity Mixing degree Length for melting Capacity to generate pressure …
Department of Polymer Engineering University of Minho
Screw 1: L1 = 10.4D
L2 = 7.0D L3 = 8.6D
Screw 2: L1 = 3.6D
L2 = 7.0D L3 = 15.4D
0.0 0.2 0.4 0.6 0.8 1.0 0.0 0.2 0.4 0.6 0.8 1.0 L(m) X/W 20 40 60 80 WATS x 10 Q x 0.2 (kg/h) Zt x 0.02 (m) Tmelt x 10 (ºC) Power x 100 (W) Pmax (MPa) 0.0 0.2 0.4 0.6 0.8 1.0 0.0 0.2 0.4 0.6 0.8 1.0 L(m) X/W 20 40 60 80 WATS x 10 Q x 0.2 (kg/h) Zt x 0.02 (m) Tmelt x 10 (ºC) Power x 100 (W) Pmax (MPa) 20rpm 40rpm 60rpm 80rpm 100rpm Ws Wm Department of Polymer Engineering University of Minho
Differences in Performance Objective Function Modelling Package Evaluation/ new (better) solutions Extruder/die response
USER INTERFACE
Optimization Algorithm
RESULTS
Department of Polymer Engineering University of Minho
MOEA
Decision Making Robustness Hybridization
MO Problem Characteristics
Evaluation of solutions Framework Interface Selection of the desired solutions Good Solution(s)? Yes No
END
Inverse Decision Making Methodology Objectives reduction DM1 DM2 Structural mechanics Design Fluid dynamics Aerodynamics Comfort assessment … Numerical/modelling routines Empirical knowledge
Department of Polymer Engineering University of Minho